Climate Insights for Atsinanana Airport

The climate in Atsinanana Airport is warm and mild. The average annual temperature is 23°C and approximately 2135mm of precipitation falls per year. Atsinanana Airport receives a notable amount of rainfall throughout the year, including during its driest month. Atsinanana 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: January, December, February. The coldest months are August, July, September, when temperatures can drop to 17°C.

Atsinanana Airport sees moderate temperature variation throughout the year, ranging from 17°C to 29°C. The warmest month is January, when average highs reach 29°C and the mean temperature sits around 26°C. August is the coolest month, with minimum temperatures around 17°C and an average of 20°C. Daily temperature variation is modest, with an average difference of 5°C between highs and lows.

Atsinanana Airport is a very wet location, receiving approximately 2135mm of precipitation annually, which averages out to around 178mm per month. The wettest month is March, averaging 410mm of rainfall. February and January also tend to see above-average precipitation. The driest month is September, with just 53mm. That's 358mm less than March, 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.

Atsinanana Airport is mildly breezy, with an average annual wind speed of 14km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is January, averaging 16km/h, though still comfortable for most outdoor activities. The calmest conditions occur in August, with average winds dropping to 12km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 4km/h between the calmest and windiest months. Wind tends to pick up during the summer months. The seasonal averages are 13km/h in winter, 15km/h in spring, 16km/h in summer, 14km/h in autumn.

It is currently autumn in Atsinanana Airport, which began on March 20, 2026. Atsinanana 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 January at around 29°C, while the coldest stretch bottoms out in August near 17°C. Winter is next, beginning on June 21, 2026 — 89 days from now.

The best time to visit Atsinanana Airport is during August, September, October and November, when the weather is most comfortable for travellers. During these months, average temperatures hover around 22°C with modest rainfall averaging 72mm per month. By contrast, January can be uncomfortably hot with temperatures reaching 29°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 Atsinanana 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.