Climate Insights for Toamasina

The climate in Toamasina is warm and mild. The average annual temperature is 25°C and approximately 2555mm of precipitation falls per year. Toamasina receives a notable amount of rainfall throughout the year, including during its driest month. Toamasina 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, September, when temperatures can drop to 21°C.

Toamasina has relatively stable temperatures year-round, staying within a 7°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 21°C and an average of 22°C. Daily temperature variation is modest, with an average difference of 2°C between highs and lows.

Toamasina is a very wet location, receiving approximately 2555mm of precipitation annually, which averages out to around 213mm per month. The wettest month is March, averaging 429mm of rainfall. January and February also tend to see above-average precipitation. The driest month is October, with just 79mm. That's 350mm 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.

Toamasina is mildly breezy, with an average annual wind speed of 17km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is July, averaging 20km/h, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in December, with average winds dropping to 15km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 5km/h between the calmest and windiest months. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 19km/h in winter, 15km/h in spring, 16km/h in summer, 18km/h in autumn.

It is currently spring in Toamasina, which began on September 23, 2026. Toamasina 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 21°C. Summer is next, beginning on December 21, 2026 (87 days from now).

The best time to visit Toamasina is during September and October, when the weather is most comfortable for travellers. During these months, average temperatures hover around 24°C with modest rainfall averaging 80mm per month. By contrast, February can be uncomfortably hot with highs reaching 28°C, while July is the coldest period with lows dropping to 21°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 Toamasina 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.