Climate Insights for Tsaratanana

The climate in Tsaratanana is warm and mild. The average annual temperature is 22°C and approximately 1821mm of precipitation falls per year. January is the wettest month, receiving around 596mm of rainfall. Tsaratanana 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, October, December. The coldest months are July, August, September, when temperatures can drop to 14°C.

Tsaratanana sees moderate temperature variation throughout the year, ranging from 14°C to 30°C. The warmest month is November, when average highs reach 30°C and the mean temperature sits around 24°C. July is the coolest month, with minimum temperatures around 14°C and an average of 18°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.

Tsaratanana is a fairly wet location, receiving approximately 1821mm of precipitation annually, which averages out to around 152mm per month. The wettest month is January, averaging 596mm of rainfall. February and March also tend to see above-average precipitation. The driest month is September, with just 2mm. That's 594mm 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.

Tsaratanana 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 23km/h, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in February, with average winds dropping to 12km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 11km/h gap 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 22km/h in winter, 17km/h in spring, 13km/h in summer, 17km/h in autumn.

It is currently autumn in Tsaratanana, which began on March 20, 2026. Tsaratanana 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 30°C, while the coldest stretch bottoms out in July near 14°C. Winter is next, beginning on June 21, 2026 — 89 days from now.

The best time to visit Tsaratanana is during April, May, June, July, August, September and October, when the weather is most comfortable for travellers. During these months, average temperatures hover around 21°C with modest rainfall averaging 17mm per month. By contrast, November can be uncomfortably hot with temperatures reaching 30°C. With minimal rainfall expected, you can pack light and plan outdoor activities with confidence.

The table below shows monthly climate averages for Tsaratanana 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.