Climate Overview
The climate in Ono-I-Lau Airport is warm and mild. The average annual temperature is 25°C and approximately 1963mm of precipitation falls per year. Ono-I-Lau Airport receives a notable amount of rainfall throughout the year, including during its driest month. Ono-I-Lau Airport is in the Southern Hemisphere. The seasons are reversed — summer runs from December to February, while winter falls between June and August. The summer months are: February, March, January. The coldest months are August, September, July, when temperatures can drop to 22°C.
Temperature
Ono-I-Lau Airport has relatively stable temperatures year-round, staying within a 5°C range. The warmest month is February, when average highs reach 27°C and the mean temperature sits around 27°C. August is the coolest month, with minimum temperatures around 22°C and an average of 23°C. Daily temperature variation is modest, with an average difference of 1°C between highs and lows.
Precipitation
Ono-I-Lau Airport is a fairly wet location, receiving approximately 1963mm of precipitation annually, which averages out to around 164mm per month. The wettest month is February, averaging 313mm of rainfall. March and April also tend to see above-average precipitation. The driest month is July, with just 66mm. That's 248mm less than February, the wettest month. Precipitation varies noticeably between seasons, with the first half (January to June) of the year generally seeing more rainfall.
Wind
Ono-I-Lau Airport is relatively calm, with an average annual wind speed of 7km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is April, averaging 8km/h, though still comfortable for most outdoor activities. The calmest conditions occur in January, with average winds dropping to 6km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 2km/h between the calmest and windiest months.
Seasons
93 days until Spring
It is currently winter in Ono-I-Lau Airport, which began on June 21, 2026. Ono-I-Lau Airport is in the Southern Hemisphere, where the seasons are reversed — spring starts in September, summer in December, autumn in March, and winter in June. The warmest period peaks in February at around 27°C, while the coldest stretch bottoms out in August near 22°C. Spring is next, beginning on September 23, 2026 — 93 days from now.
Spring
Temperatures range from 22 to 25°C. Rainfall is heavy, totalling around 323mm across the season with a monthly average of 108mm. Winds are generally light, averaging 7km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 25 to 27°C. Rainfall is heavy, totalling around 684mm across the season with a monthly average of 228mm. Winds are generally light, averaging 7km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 24 to 27°C. Rainfall is heavy, totalling around 669mm across the season with a monthly average of 223mm. Winds are generally light, averaging 7km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 22 to 25°C. Precipitation is moderate at around 287mm for the season, averaging 96mm per month. Winds are generally light, averaging 7km/h. A light jacket or sweater is usually sufficient, though cooler evenings may call for an extra layer.
Best Time to Visit
The best time to visit Ono-I-Lau Airport is during June, July and September, when the weather is most comfortable for travellers. During these months, average temperatures hover around 23°C with modest rainfall averaging 86mm per month. By contrast, February can be uncomfortably hot with highs reaching 27°C, while August is the coldest period with lows dropping to 22°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.
Monthly Climate Data
The table below shows monthly climate averages for Ono-I-Lau 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.
