Climate Overview
The climate in Ontong Java Atoll Airport is hot. The average annual temperature is 28°C and approximately 3813mm of precipitation falls per year. Ontong Java Atoll Airport receives a notable amount of rainfall throughout the year, including during its driest month. Ontong Java Atoll Airport sits near the equator, so seasonal temperature differences are minimal throughout the year.
Temperature
Ontong Java Atoll Airport has relatively stable temperatures year-round, staying within a 3°C range. The warmest month is December, when average highs reach 29°C and the mean temperature sits around 28°C. August is the coolest month, with minimum temperatures around 26°C and an average of 27°C. Daily temperature variation is modest, with an average difference of 2°C between highs and lows.
Precipitation
Ontong Java Atoll Airport is a very wet location, receiving approximately 3813mm of precipitation annually, which averages out to around 318mm per month. The wettest month is July, averaging 381mm of rainfall. December and August also tend to see above-average precipitation. The driest month is May, with just 190mm. That's 191mm less than July, the wettest month. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around.
Wind
Ontong Java Atoll Airport is relatively calm, with an average annual wind speed of 4km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is February, averaging 6km/h, though still comfortable for most outdoor activities. The calmest conditions occur in November, with average winds dropping to 4km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 2km/h gap between the calmest and windiest months.
Seasons
92 days until Spring
It is currently winter in Ontong Java Atoll Airport, which began on June 21, 2026. Ontong Java Atoll Airport sits near the equator, so the traditional four-season cycle is less pronounced — temperatures remain relatively stable year-round. The warmest period peaks in December at around 29°C, while the coldest stretch bottoms out in August near 26°C. Spring is next, beginning on September 23, 2026 — 92 days from now.
Spring
Temperatures range from 26 to 29°C. Rainfall is heavy, totalling around 816mm across the season with a monthly average of 272mm. Winds are generally light, averaging 4km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 27 to 29°C. Rainfall is heavy, totalling around 1063mm across the season with a monthly average of 354mm. Winds are generally light, averaging 5km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 27 to 29°C. Rainfall is heavy, totalling around 895mm across the season with a monthly average of 298mm. Winds are generally light, averaging 4km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 26 to 28°C. Rainfall is heavy, totalling around 1039mm across the season with a monthly average of 346mm. Winds are generally light, averaging 5km/h. A light jacket or sweater is usually sufficient, though cooler evenings may call for an extra layer.
Monthly Climate Data
The table below shows monthly climate averages for Ontong Java Atoll 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.
