Climate Overview
The climate in Mitiaro Island Airport is hot. The average annual temperature is 25°C and approximately 2113mm of precipitation falls per year. Mitiaro Island Airport receives a notable amount of rainfall throughout the year, including during its driest month. Mitiaro Island 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: March, February, January. The coldest months are August, September, July, when temperatures can drop to 23°C.
Temperature
Mitiaro Island Airport has relatively stable temperatures year-round, staying within a 4°C range. The warmest month is March, when average highs reach 27°C and the mean temperature sits around 27°C. August is the coolest month, with minimum temperatures around 23°C and an average of 24°C. Daily temperature variation is modest, with an average difference of 1°C between highs and lows.
Precipitation
Mitiaro Island Airport is a very wet location, receiving approximately 2113mm of precipitation annually, which averages out to around 176mm per month. The wettest month is December, averaging 319mm of rainfall. November and January also tend to see above-average precipitation. The driest month is September, with just 60mm. That's 259mm less than December, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic.
Wind
Mitiaro Island Airport is relatively calm, with an average annual wind speed of 6km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is June, averaging 7km/h, though still comfortable for most outdoor activities. The calmest conditions occur in March, with average winds dropping to 5km/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
84 days until Spring
It is currently winter in Mitiaro Island Airport, which began on June 21, 2026. Mitiaro Island 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 March at around 27°C, while the coldest stretch bottoms out in August near 23°C. Spring is next, beginning on September 23, 2026 — 84 days from now.
Spring
Temperatures range from 24 to 26°C. Rainfall is heavy, totalling around 478mm across the season with a monthly average of 159mm. 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 772mm across the season with a monthly average of 257mm. Winds are generally light, averaging 6km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 25 to 27°C. Rainfall is heavy, totalling around 582mm across the season with a monthly average of 194mm. Winds are generally light, averaging 6km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 23 to 25°C. Precipitation is moderate at around 282mm for the season, averaging 94mm 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 Mitiaro Island Airport is during June, August and September, when the weather is most comfortable for travellers. During these months, average temperatures hover around 24°C with modest rainfall averaging 71mm per month. By contrast, March can be uncomfortably hot with temperatures reaching 27°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 Mitiaro Island 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.
