Hilo, Hawaii is one of the most beautiful places on the Big Island, with lush rainforests, powerful waterfalls, a historic downtown, and a rich Hawaiian cultural heritage. But its famously rainy weather can make choosing travel dates a little tricky. So, when is the best time to visit Hilo? For most travelers, late spring and early fall offer a useful balance of weather, crowds, and travel costs.
Quick Answer
The best time to visit Hilo, Hawaii is generally April through May or September through October. May has one of the lowest average rainfall totals, while September offers warm temperatures after the main summer vacation period. Avoid major holidays and check Merrie Monarch Festival dates if you want more lodging options and potentially lower prices.
Key Takeaways
- For relatively lower rainfall: May and June are useful months to consider, although rain is possible throughout the year.
- For a balance of weather and crowds: Late April through May and September through October are practical travel windows.
- For cultural events: April brings the Merrie Monarch Festival, but lodging demand can increase during festival week.
- For waterfall photography: Wetter periods can produce impressive waterfall flows, although heavy rain may affect access and visibility.
- For budget travel: Compare actual airfare and accommodation prices across several dates rather than assuming one month is always cheapest.
- For outdoor safety: Check weather, ocean conditions, water-quality advisories, and park closures before heading out.
1. Understanding Hilo’s Weather: Rain, Sunshine, and Rainbows
Hilo is famous for its rain, and that rainfall is a major reason the surrounding landscape stays so green. The Big Island has several microclimates. Hilo, on the eastern side, is generally wetter than the Kona region on the western side.
However, Hilo’s weather is more complicated than a simple wet-season and dry-season split. Even its relatively dry months receive substantial rainfall.
According to NOAA’s 1991–2020 climate normals for Hilo International Airport, the station averages approximately 120.39 inches of rainfall annually.
That historical average is useful for choosing travel dates, but it is not a forecast for any particular trip.
Hilo Weather by Month
The following table uses NOAA’s 1991–2020 historical climate normals. Temperatures and rainfall can vary across the surrounding area.
| Month | Average High | Average Low | Rainfall |
|---|---|---|---|
| January | 78.7°F | 64.1°F | 7.86 in. |
| February | 78.4°F | 64.1°F | 10.22 in. |
| March | 78.5°F | 65.2°F | 12.68 in. |
| April | 79.0°F | 66.1°F | 9.40 in. |
| May | 80.7°F | 67.3°F | 6.99 in. |
| June | 81.8°F | 68.7°F | 7.30 in. |
| July | 82.8°F | 69.9°F | 9.24 in. |
| August | 82.9°F | 70.4°F | 11.30 in. |
| September | 83.3°F | 69.8°F | 8.70 in. |
| October | 82.4°F | 69.0°F | 10.24 in. |
| November | 80.3°F | 67.6°F | 14.39 in. |
| December | 78.8°F | 65.7°F | 12.07 in. |
These figures show why May is particularly attractive for travelers who want relatively lower rainfall. September is another useful option, with warm temperatures and a lower historical rainfall average than August or October.
Still, a monthly average does not tell you exactly when the rain will fall. A month with lower rainfall can have frequent light showers, while a wetter month may receive much of its rain during a smaller number of heavy events.
The Wetter Period: November Through March
November through March is commonly treated as Hilo’s wetter travel period, although rainfall varies from month to month.
November, December, and March have relatively high historical rainfall totals. January is generally less wet than those months, based on the airport climate normals.
Advantages:
- Waterfalls may be particularly impressive after rainfall.
- Rainforests and surrounding vegetation remain beautifully green.
- Cloudy weather can create atmospheric landscape photography.
- Some nonholiday travel dates may have attractive accommodation offers.
Disadvantages:
- Heavy rain can affect hiking, visibility, and scenic drives.
- Trails may become muddy or slippery.
- Ocean conditions may be unsuitable for swimming or snorkeling.
- Thanksgiving, Christmas, and New Year’s can bring stronger travel demand and higher prices.
What to pack: A lightweight waterproof rain jacket, quick-drying clothing, water-resistant footwear, extra socks, and a waterproof bag for electronics.
Suitable activities: Visit the Pacific Tsunami Museum, explore ʻImiloa Astronomy Center, enjoy local restaurants, browse art galleries, or visit waterfalls when conditions are safe.
The Relatively Drier Period: April Through October
April through October often offers useful opportunities for outdoor travel, but calling the entire period a dry season can be misleading.
May and June have comparatively low historical rainfall totals. August and October receive considerably more rain on average.
Advantages:
- More opportunities to plan outdoor activities around suitable weather windows.
- Warm temperatures for coastal exploration.
- Comfortable conditions for visiting botanical gardens and scenic attractions when rain is light.
- Potentially better visibility for selected sightseeing activities.
Disadvantages:
- Rain remains common.
- Humidity can make warmer afternoons feel uncomfortable.
- Summer vacation periods can increase demand at popular attractions.
- The period overlaps with hurricane season.
What to pack: Bring the same lightweight rain gear recommended for the wetter months, along with sun protection, comfortable walking shoes, and swimwear.
Suitable activities: Explore Richardson Ocean Park, Carlsmith Beach Park, botanical gardens, downtown Hilo, and the surrounding scenic routes. Swimming and snorkeling should always depend on current water and surf conditions.
Hurricane Season: June Through November
The official Central Pacific hurricane season runs from June 1 through November 30.
This overlaps with several otherwise attractive months for visiting Hilo.
A hurricane does not need to pass directly over Hilo to disrupt a trip. Tropical weather can bring heavy rain, strong winds, flooding, rough seas, or transportation interruptions.
Check forecasts and official advisories from the National Weather Service in Honolulu before and during your trip.
Warning: Never enter flooded roads, streams, or coastal water during dangerous weather. Follow evacuation instructions and official closure notices. If purchasing travel insurance, check the policy’s storm-related coverage, exclusions, and purchase requirements before relying on it.
2. Navigating the Crowds: When Hilo Gets Busy
Hilo generally has a different tourism atmosphere from the resort-focused Kona coast. However, it still experiences busy periods, especially during holidays, school vacations, and major local events.
Peak Tourist Periods
Winter holidays: Mid-December through early January can attract travelers escaping colder weather elsewhere. Compare accommodation and flight prices early if you plan to visit during this period.
Summer vacation: June through August is a popular family travel period. Attractions such as ʻAkaka Falls and Hawaiʻi Volcanoes National Park may be busier at popular visiting times.
Spring break: School and university vacation schedules vary, so demand can increase during different weeks in March and April.
Merrie Monarch Festival: This annual celebration of hula and Hawaiian culture is an important event in Hilo. Visitors interested in Hawaiian performance and cultural traditions may enjoy planning around it, but should expect greater demand for some local accommodations.
Check the official Merrie Monarch Festival website for the applicable year’s schedule.
Shoulder Seasons: April–May and September–October
These periods offer a useful balance for many travelers, especially when dates avoid major holidays and events.
Late spring: April and May can provide pleasant temperatures and opportunities for outdoor exploration. May has one of Hilo’s lowest historical monthly rainfall totals.
If choosing April, consider spring-break schedules and Merrie Monarch dates before booking.
Early fall: September and October follow the main summer vacation period. September is particularly appealing for travelers who enjoy warm temperatures.
October can still be worthwhile, but its historical rainfall average is higher than September’s, and both months fall within hurricane season.
How to Avoid Crowds at Popular Attractions
- Visit popular waterfalls earlier in the day when practical.
- Check attraction opening hours before leaving your accommodation.
- Consider weekdays rather than weekends for flexible sightseeing plans.
- Leave extra time for parking and traffic during local events.
- Have a backup destination in case a popular attraction is closed or unusually busy.
Early mornings can also provide pleasant photography conditions, although cloud cover and weather change quickly.
3. Managing the Costs: A Hilo Budget Breakdown
Hawaii can be expensive, but Hilo offers accommodation styles, local food, and outdoor attractions that may fit a range of budgets.
Your actual travel cost depends on where you are flying from, the length of your stay, transportation, accommodation type, and the activities you choose.
Flights: Compare Hilo and Kona
Hilo International Airport (ITO) is located close to town and is served by interisland airlines. Its name does not mean that every traveler can book a direct international or mainland flight into Hilo.
Travelers should compare routes into both Hilo International Airport (ITO) and Ellison Onizuka Kona International Airport at Keāhole (KOA).
Kona may offer a more convenient itinerary for some origins, while Hilo can reduce ground transportation needs if you plan to stay mainly on the eastern side.
The drive between Kona’s airport area and Hilo commonly takes around 1.5–2 hours under suitable conditions, depending on route, weather, and traffic.
When comparing flights, calculate the total cost of:
- Airfare and baggage fees.
- Any connecting flights.
- Rental car charges.
- Fuel.
- Additional accommodation or parking costs.
- The time required to reach your destination.
Booking strategy: Start comparing prices several months ahead when your dates are fixed, especially for major holidays or festival periods. Check different departure and return dates rather than relying on a supposedly cheapest weekday.
If you have airline miles, compare award-ticket availability with the cash fare before booking.
Accommodation: Where to Stay in Hilo
Hilo has hotels, boutique properties, bed-and-breakfasts, vacation rentals, and some budget-oriented accommodations.
Hotels: Convenient for travelers who want traditional services and straightforward booking.
Vacation rentals: May offer kitchen facilities and additional space, particularly for families or longer stays. Check cleaning fees, taxes, and local operating rules.
Bed-and-breakfasts: Can provide a more personal accommodation experience. Confirm whether breakfast and parking are included.
Hostels and budget lodging: Availability may be limited, so check current listings rather than assuming a dorm bed will be available.
Farm stays and work exchanges: These may appeal to travelers planning a longer visit, but requirements and arrangements vary. Confirm duties, accommodation conditions, transportation, and any applicable eligibility requirements before committing.
For budget comparisons, use the final booking total rather than the advertised nightly rate alone.
Food and Drink: Eating Well in Hilo
One of Hilo’s pleasures is exploring local food. You do not need to eat at expensive restaurants for every meal.
- Hilo Farmers Market: Browse fresh produce, local snacks, and prepared food.
- Plate lunches: Look for filling local meals, including dishes such as kalua pig and loco moco.
- Poke: Try local seafood from an established food business and follow normal food-safety precautions.
- Food trucks: Compare menus and prices for casual meals.
- Supermarkets: Grocery shopping can reduce costs, especially when your accommodation has a kitchen.
- Restaurants: Hilo offers everything from casual dining to more elaborate meals. Check current menus and prices.
Alcohol, specialty drinks, and imported groceries can increase your food budget. Buying breakfast supplies and snacks can help control daily expenses.
Transportation: Getting Around Hilo
A rental car is generally useful for travelers planning to explore beyond central Hilo.
It gives you greater flexibility for visiting waterfalls, gardens, coastal areas, and Hawaiʻi Volcanoes National Park.
Rental cars: Compare total quotes, including taxes, insurance arrangements, and additional fees.
Fuel: Include driving distance in your estimate, especially if you plan to explore both sides of the island.
Hele-On Bus: Public transportation may work for selected journeys, but check the current routes and schedules before depending on it for sightseeing.
Rideshares and taxis: These may be useful around town, although availability can be less dependable outside busier areas.
Walking and biking: Suitable for parts of downtown Hilo, but less practical for reaching many outlying attractions.
Activities and Attraction Costs
Hilo has plenty of outdoor activities that do not require an expensive guided tour.
Free or relatively low-cost activities:
- Walking through Liliʻuokalani Gardens.
- Visiting Rainbow Falls and nearby viewpoints when open.
- Exploring Richardson Ocean Park and Carlsmith Beach Park.
- Browsing Hilo Farmers Market.
- Walking around downtown Hilo.
- Taking scenic drives.
Paid attractions:
- ʻAkaka Falls State Park: Nonresident admission and vehicle parking charges may apply separately. Check the official Hawaiʻi State Parks website for current fees and notices.
- ʻImiloa Astronomy Center: Offers exhibits and planetarium experiences connecting astronomy with Hawaiian knowledge and culture. Check official admission and operating information.
- Pacific Tsunami Museum: Published general admission is $15. During its revitalization, the museum lists limited weekend hours of 10 a.m.–2 p.m. Confirm the schedule before visiting.
- Hawaiʻi Volcanoes National Park: The National Park Service lists a standard private-vehicle entrance fee of $30. Check current fees and conditions before visiting.
- Guided activities: Kayaking, snorkeling, ziplining, and other tours vary widely in price.
- Helicopter tours: These can be a significant additional expense. Availability and routes depend on weather, operating conditions, and the provider.
- Scuba diving: Guided excursions and equipment rental may add substantial costs.
For current national park fees, visit the official Hawaiʻi Volcanoes National Park fees page.
A Simple Hilo Trip Budget Example
Here is an illustrative calculation for two adults staying three nights. These are example planning figures, not guaranteed market prices.
| Expense | Example Calculation |
|---|---|
| Accommodation | $200 × 3 nights = $600 |
| Rental car | $70 × 3 days = $210 |
| Food | $100 × 3 days = $300 |
| Fuel and activities | Example allowance: $150 |
| Illustrative subtotal | $1,260 |
This example excludes airfare and any additional taxes, insurance, parking, baggage fees, or premium activities not already included in a quote.
Replace the example figures with actual booking prices to create a realistic budget for your own trip.
Pro Tip: Compare complete three-night or four-night trip totals across multiple dates. A cheaper flight can be offset by higher accommodation or rental car costs, so the lowest airfare does not always produce the cheapest vacation.
4. Hilo vs. Kona: Which Side of the Island Is Right for Your Trip?
Hilo and Kona offer different experiences, and your preferred activities should influence where you stay.
Hilo: The Lush, Green Side
Weather: Wetter and often more humid, with frequent showers and dramatic green scenery.
Landscape: Rainforests, waterfalls, volcanic landscapes, rugged coastlines, and black-sand coastal areas.
Atmosphere: A historic town with local businesses, cultural attractions, and a less resort-centered tourism setting.
Major attractions:
- Rainbow Falls.
- ʻAkaka Falls State Park.
- Liliʻuokalani Gardens.
- Hilo Farmers Market.
- ʻImiloa Astronomy Center.
- Pacific Tsunami Museum.
- Moku Ola, also known as Coconut Island.
- Hawaiʻi Volcanoes National Park, reached by driving south from Hilo.
Activities: Hiking, waterfall viewing, botanical gardens, cultural experiences, scenic driving, and volcano exploration.
Kona: The Sunnier, Drier Side
Weather: Generally sunnier and drier than Hilo.
Landscape: Lava fields, sandy beaches, and coastal areas known for snorkeling and diving.
Atmosphere: More resort-oriented in many areas, with substantial visitor infrastructure.
Major attractions:
- Kailua-Kona.
- Maniniʻowali Beach.
- Hāpuna Beach State Recreation Area.
- Puʻuhonua o Hōnaunau National Historical Park.
- Coffee farms.
- Manta ray snorkeling and diving experiences.
Activities: Snorkeling, diving, beach visits, surfing, fishing, and coffee farm tours.
Why Hilo Might Be the Better Fit for Your Plans
Choose Hilo if your main interests are waterfalls, rainforests, Hawaiian culture, botanical gardens, and the eastern side of the island.
Kona may fit a trip focused primarily on resorts, sunny beach days, and selected marine activities.
Many visitors divide their stay between the two sides to experience the island’s contrasting landscapes.
If your schedule allows, spending time on both sides can also reduce the need for repeated long drives.
5. Best Activities in Hilo by Weather Conditions
Rather than building your entire itinerary around a perfect forecast, plan activities that can be adjusted to changing weather.
What to Do on a Sunny or Partly Cloudy Day
- Explore ʻAkaka Falls State Park.
- Visit botanical gardens along the Hāmākua Coast.
- Walk through Liliʻuokalani Gardens.
- Explore Richardson Ocean Park or Carlsmith Beach Park when conditions permit.
- Spend time in downtown Hilo.
- Take a scenic drive toward Hawaiʻi Volcanoes National Park.
For snorkeling or kayaking, check current surf, currents, water quality, and local advisories first.
What to Do on a Rainy Day
- Visit ʻImiloa Astronomy Center.
- Explore the Pacific Tsunami Museum during its published operating hours.
- Browse local galleries and shops.
- Enjoy Hawaiian food at a local restaurant.
- Visit covered market areas when available.
- Explore suitable greenhouses or indoor botanical attractions.
Light rain does not automatically ruin an outdoor visit. However, heavy rainfall, thunderstorms, flooding, or official closure notices should change your plans.
When to Visit Hawaiʻi Volcanoes National Park
Hawaiʻi Volcanoes National Park is one of the most significant attractions accessible from Hilo.
The drive from Hilo to the main Kīlauea entrance commonly takes around 45 minutes under suitable conditions.
The park includes volcanic landscapes, scenic roads, overlooks, and walking opportunities.
Conditions at the park can differ substantially from conditions in Hilo, particularly at higher elevations.
Check the National Park Service visitor information for weather, access, closures, and current conditions.
Volcanic activity and lava visibility are unpredictable. Do not plan a trip around an assumption that an eruption will be visible.
6. Practical Packing and Preparation Tips for Hilo
A little preparation makes Hilo’s changing weather easier to enjoy.
Clothing: Layers Are Your Friend
- Rain jacket: Bring a lightweight, packable waterproof jacket.
- Quick-drying clothing: Synthetic fabrics or merino wool can be more comfortable than clothing that stays damp.
- Light layers: Pack a sweater or hoodie for cooler evenings and higher-elevation trips.
- Footwear: Choose shoes or sandals suitable for wet walking surfaces.
- Hiking shoes: Bring shoes with dependable grip if you plan to explore trails.
- Extra socks: Useful after muddy or rainy excursions.
- Swimwear: Pack it if coastal swimming or hotel-pool visits are part of your plans.
Essentials Beyond Clothing
- Broad-spectrum sunscreen.
- A hat and sunglasses.
- Insect repellent.
- A reusable water bottle.
- A lightweight daypack.
- A portable phone charger.
- Water-resistant protection for camera equipment.
- Dry bags or reusable waterproof pouches.
- Any necessary personal medication.
For ocean activities, choose sunscreen that complies with applicable Hawaiʻi requirements and avoid damaging coral or other marine life.
Ocean, Waterfall, and Freshwater Safety
Hilo’s beautiful waterways require special care, especially after heavy rain.
The Hawaiʻi Department of Health warns that storm runoff may carry pollutants into coastal water. Rainfall farther inland can affect a beach even when the beach itself is sunny.
Warning: Avoid swimming during or immediately after heavy rainfall. Stay out of brown, cloudy, or otherwise questionable water, and avoid streams and areas near drainage outlets. Check official water-quality advisories and local ocean conditions before entering the water.
Also follow these precautions:
- Observe warning signs and lifeguard instructions.
- Do not swim near waterfalls or in fast-moving streams.
- Stay behind barriers at waterfall viewpoints.
- Wear appropriate footwear on wet trails.
- Never cross flooded streams or roadways.
- Avoid entering natural water with open cuts or wounds.
- Do not touch or disturb marine wildlife.
See the Hawaiʻi Department of Health Beach Monitoring Program for water-quality guidance.
Maunakea Stargazing and Mountain Safety
Maunakea offers remarkable opportunities to experience the night sky, but it is a high-altitude environment rather than an ordinary scenic drive.
The Visitor Information Station is approximately 9,200 feet above sea level. The summit is substantially higher.
Two-wheel-drive vehicles are not permitted beyond the Visitor Information Station. Summit travel requires an appropriate vehicle, suitable conditions, and compliance with access restrictions.
Visitors considering higher elevations should account for altitude-related health risks and follow ranger guidance.
The University of Hawaiʻi recommends acclimatization at the Visitor Information Station before attempting summit travel.
Check the official Maunakea visitor information before making plans.
For some travelers, visiting the information station or booking an authorized tour may be more practical than attempting the summit drive independently.
Mindset and Local Etiquette
Embrace the rain: It is part of Hilo’s environment. Keep your schedule flexible and enjoy suitable activities when conditions change.
Respect Hawaiian culture: Learn about the places you visit, observe cultural protocols, and treat sacred sites with respect.
Use Hawaiian phrases thoughtfully: Familiar words such as aloha and mahalo can be a starting point for learning more about the language.
Leave No Trace: Pack out your rubbish, stay on designated routes, and avoid disturbing plants or wildlife.
Support local businesses: Visit local restaurants, markets, and independent shops when possible.
Ask for recommendations respectfully: Local staff and residents may offer useful information about food, activities, and changing conditions, but avoid assuming that residents must share private or sensitive locations.
7. How Many Days Should You Spend in Hilo?
Two to four days is a practical starting point for many travelers, depending on their interests.
A short stay can cover downtown Hilo and several nearby attractions. Additional days provide more flexibility for Hawaiʻi Volcanoes National Park, scenic drives, and weather-related changes.
A Flexible Three-Day Hilo Itinerary
Day 1: Explore Hilo town. Visit Liliʻuokalani Gardens, browse downtown shops, enjoy local food, and explore the Hilo Farmers Market. Add the Pacific Tsunami Museum if it is open.
Day 2: Waterfalls and gardens. Visit Rainbow Falls and ʻAkaka Falls State Park. Include a botanical garden or scenic Hāmākua Coast stop if time and conditions allow.
Day 3: Hawaiʻi Volcanoes National Park. Spend the day exploring appropriate park roads, viewpoints, and trails. Check the latest conditions before leaving Hilo.
If heavy rain affects one day’s plans, switch to a museum, local food, or town-based activity and move your outdoor excursion to another suitable day.
Note: A flexible schedule is especially valuable in Hilo. Historical monthly averages help you choose dates, but the local forecast and actual conditions should determine what you do each day.
Frequently Asked Questions
1. What is the best time to visit Hilo, Hawaii for good weather?
May is a particularly useful month to consider because it has one of Hilo’s lowest historical monthly rainfall averages. June also has a relatively low average. However, Hilo receives rain throughout the year, so no month guarantees clear skies.
2. When is the best time to visit Hilo to avoid crowds?
Late spring and early fall are useful periods to consider outside major holidays and local events. In April, check Merrie Monarch Festival dates because accommodation demand can increase during the event.
3. What is the cheapest time to visit Hilo, Hawaii?
There is no consistently cheapest month for every traveler. April–May and September–October may offer useful opportunities outside major events, but compare complete airfare, lodging, and transportation costs across your available dates.
4. What is the peak tourist season in Hilo?
Winter holidays, summer school vacations, spring-break periods, and Merrie Monarch Festival week can bring increased visitor demand. The exact impact varies by date and accommodation availability.
5. What are the average temperatures in Hilo throughout the year?
NOAA’s 1991–2020 normals for Hilo International Airport show average monthly highs of approximately 78–83°F and average monthly lows of about 64–70°F. Temperatures vary with weather and elevation.
6. Does it rain every day in Hilo?
Not necessarily, but rain is frequent. NOAA’s historical normals record approximately 273 days annually with measurable rainfall at Hilo International Airport. That does not mean rain falls continuously throughout each of those days.
7. Is September a good month to visit Hilo?
September is a practical option for travelers seeking warm weather after the main summer vacation period. Its historical rainfall average is lower than August’s or October’s. However, September falls within hurricane season, so monitor official weather forecasts.
8. Is Hilo worth visiting during the rainy season?
Yes, particularly if you enjoy rainforests, waterfalls, Hawaiian culture, and scenic landscapes. Bring suitable rain gear, include indoor activities, and avoid dangerous trails, flooded areas, or affected coastal water.
9. Should I fly into Hilo or Kona?
Compare the total itinerary cost. Hilo Airport is convenient for stays focused on eastern Hawaiʻi Island. Kona Airport may offer a different selection of flight routes, but reaching Hilo requires additional ground transportation.
10. How many days do you need in Hilo?
Two to four days provides time for town attractions, waterfalls, gardens, and a visit to Hawaiʻi Volcanoes National Park. A longer stay gives you more flexibility if rain changes your outdoor plans.
Sources
- NOAA National Centers for Environmental Information — Hilo Climate Normals — Historical monthly rainfall and temperature data for 1991–2020.
- National Weather Service Honolulu — Weather forecasts, tropical weather information, and hazardous-weather advisories.
- Merrie Monarch Festival — Official festival information and event schedules.
- National Park Service — Hawaiʻi Volcanoes National Park — Visitor planning, park access, conditions, and safety information.
- Hawaiʻi Department of Health — Beach Monitoring Program — Coastal water quality, storm runoff, and swimming precautions.
- University of Hawaiʻi — Maunakea Visitor Information — Elevation, access requirements, vehicle restrictions, and visitor safety guidance.
