Hilo (HI) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Hilo.
Climate overview of Hilo
With consistently stable weather, Hilo, Hawaii, United States of America, sees little seasonal temperature change. Daytime highs average 24°C (75°F), ranging from 26°C (79°F) in August to 23°C (73°F) in February.
The city receives considerable rainfall, with around 2136 mm (84 in) annually. March is the wettest month. It has a distinct rainy season from February to May. The most sunshine falls in June, with an average of 6.0 hours of daily sunshine.
Hilo Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Hilo — and find the best time to visit.
Monthly Temperature in Hilo
The climate in Hilo remains fairly constant, offering comfortable temperatures throughout the year. Typically, average maximum daytime temperatures range from a comfortable 26°C (79°F) in August to a comfortable 23°C (73°F) in the coolest month, February.
Nights vary from 20°C (68°F) in August to around 17°C (63°F) during the colder months.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Hilo
Hilo is known for its substantial rainfall, with annual precipitation reaching 2136 mm (84 in). The climate in Hilo shows significant variation throughout the year. Expect heavy rainfall in March, the wettest month, with an average of 273 mm (11 in) of precipitation over 19 rainy days.
In contrast, the driest month June offers drier and sunnier days, with around 117 mm (4.6 in) of rainfall over 18 rainy days. For more details, please visit our Hilo Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Hilo
Hilo offers a pleasant mix of sunny and slightly overcast days. The difference in sunshine hours between June (6.0 hours daily) and November (3.8 hours daily) provides a bit of variety for visitors and residents.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Humidity in Hilo by Month
The relative humidity is high throughout the year in Hilo.
The city experiences its highest humidity in April, reaching 80%. In January, the humidity drops to its lowest level at 75%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Hilo
The weather does bring rainfall during this period, between 117 mm (4.6 in) and 138 mm (5.4 in).
Plan accordingly for January, February, March, April, May, August, November and December, when conditions bring the heaviest precipitation. Planning your next adventure but unsure where to go? Our climate tool suggests perfect locations tailored to your preferred weather conditions. Discover your ideal travel destination with our weather planner.
Frequently asked questions about the climate in Hilo
What is the best time to visit Hilo?
January, May, June, July, August, September and October typically offer the most optimal weather in Hilo. In contrast, March tends to have less optimal conditions. Hilo has a distinct rainy season from February to May.
What temperatures can I expect in Hilo?
Daytime highs range from 23°C (73°F) in February to 26°C (79°F) in August. Nighttime lows range from 17°C (63°F) to 20°C (68°F). Temperatures stay relatively stable year-round.
How much rain does Hilo get?
Annual rainfall is around 2136 mm (84 in). March is the wettest month with 273 mm (11 in), while June is the driest with 117 mm (4.6 in).
How sunny is Hilo?
Hilo receives around 1,834 hours of sunshine per year. June is the sunniest month with 179 hours, while November is the cloudiest with just 114 hours.
Hilo 3-Day Forecast
Hilo (HI) 3-Day Forecast
Hilo on the map
Hilo is highlighted — select any city to see its climate.
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