Climate Insights for Hilo International Airport

The climate in Hilo International Airport is temperate. The average annual temperature is 17°C and approximately 2516mm of precipitation falls per year. Hilo International Airport receives a notable amount of rainfall throughout the year, including during its driest month. Hilo International Airport is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: August, September, July. The coldest months are February, January, March, when temperatures can drop to 12°C.

Hilo International Airport sees moderate temperature variation throughout the year, ranging from 12°C to 23°C. August is the warmest month, though highs remain moderate at 23°C with a mean of 19°C. February is the coolest month, with minimum temperatures around 12°C and an average of 15°C. Daily temperature variation is modest, with an average difference of 7°C between highs and lows.

Hilo International Airport is a very wet location, receiving approximately 2516mm of precipitation annually, which averages out to around 210mm per month. The wettest month is March, averaging 363mm of rainfall. February and April also tend to see above-average precipitation. The driest month is July, with just 95mm. That's 269mm less than March, the wettest month. Precipitation varies noticeably between seasons, with the first half (January to June) of the year generally seeing more rainfall.

Hilo International Airport is mildly breezy, with an average annual wind speed of 15km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is July, averaging 17km/h, though still comfortable for most outdoor activities. The calmest conditions occur in January, with average winds dropping to 14km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 3km/h between the calmest and windiest months. Wind tends to pick up during the summer months. The seasonal averages are 14km/h in winter, 16km/h in spring, 17km/h in summer, 15km/h in autumn.

It is currently spring in Hilo International Airport, which began on March 20, 2026. Hilo International Airport is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in August at around 23°C, while the coldest stretch bottoms out in February near 12°C. Summer is next, beginning on June 21, 2026 — 81 days from now.

The best time to visit Hilo International Airport is during July, when the weather is most comfortable for travellers. During these months, average temperatures hover around 19°C with modest rainfall averaging 95mm per month. By contrast, August can be uncomfortably hot with highs reaching 23°C, while February is the coldest period with lows dropping to 12°C. Despite being the best months overall, some rain is still likely — pack a waterproof layer and plan a mix of indoor and outdoor activities.

The table below shows monthly climate averages for Hilo International Airport based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.