Climate Insights for Mananjary

The climate in Mananjary is warm and mild. The average annual temperature is 24°C and approximately 1953mm of precipitation falls per year. Mananjary receives a notable amount of rainfall throughout the year, including during its driest month. Mananjary 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, January, March. The coldest months are July, August, June, when temperatures can drop to 20°C.

Mananjary has relatively stable temperatures year-round, staying within a 8°C range. The warmest month is February, when average highs reach 28°C and the mean temperature sits around 27°C. July is the coolest month, with minimum temperatures around 20°C and an average of 21°C. Daily temperature variation is modest, with an average difference of 3°C between highs and lows.

Mananjary is a fairly wet location, receiving approximately 1953mm of precipitation annually, which averages out to around 163mm per month. The wettest month is March, averaging 351mm of rainfall. February and January also tend to see above-average precipitation. The driest month is August, with just 67mm. That's 284mm 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.

Mananjary 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 October, averaging 5km/h, though still comfortable for most outdoor activities. The calmest conditions occur in April, with average winds dropping to 3km/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.

It is currently winter in Mananjary, which began on June 21, 2026. Mananjary 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 28°C, while the coldest stretch bottoms out in July near 20°C. Spring is next, beginning on September 23, 2026 — 85 days from now.

The best time to visit Mananjary is during August, September and October, when the weather is most comfortable for travellers. During these months, average temperatures hover around 23°C with modest rainfall averaging 73mm per month. By contrast, February can be uncomfortably hot with highs reaching 28°C, while July is the coldest period with lows dropping to 20°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 Mananjary 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.