Climate Insights for Antananarivo

The climate in Antananarivo is warm and mild. The average annual temperature is 19°C and approximately 1160mm of precipitation falls per year. January is the wettest month, receiving around 307mm of rainfall. Antananarivo 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: November, December, February. The coldest months are July, August, June, when temperatures can drop to 10°C.

Antananarivo sees moderate temperature variation throughout the year, ranging from 10°C to 28°C. The warmest month is November, when average highs reach 28°C and the mean temperature sits around 21°C. July is the coolest month, with minimum temperatures around 10°C and an average of 14°C. On average, daily temperatures fluctuate by about 10°C between overnight lows and afternoon highs. The sharpest temperature change occurs between September and October, with a 2°C shift in average temperatures.

Antananarivo is a moderately rainy area, receiving approximately 1160mm of precipitation annually, which averages out to around 97mm per month. The wettest month is January, averaging 307mm of rainfall. February and March also tend to see above-average precipitation. The driest month is August, with just 3mm. That's 303mm less than January, 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.

Antananarivo is relatively calm, with an average annual wind speed of 3km/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 4km/h, though still comfortable for most outdoor activities. The calmest conditions occur in February, with average winds dropping to 2km/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 Antananarivo, which began on June 21, 2026. Antananarivo 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 November at around 28°C, while the coldest stretch bottoms out in July near 10°C. Spring is next, beginning on September 23, 2026 — 93 days from now.

The best time to visit Antananarivo is during April, May, June, August, September and October, when the weather is most comfortable for travellers. During these months, average temperatures hover around 17°C with modest rainfall averaging 20mm per month. By contrast, November can be uncomfortably hot with highs reaching 28°C, while July is the coldest period with lows dropping to 10°C. With minimal rainfall expected, you can pack light and plan outdoor activities with confidence.

The table below shows monthly climate averages for Antananarivo 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.