Best Time to Visit Antananarivo
The best time to visit Antananarivo is May and September to October, when the average temperature is 15–17°C and rainfall is low for Antananarivo, at 47–96 mm a month.
Antananarivo weather by month
The wettest month in Antananarivo is January with 475 mm of rain, and the warmest is December at an average 19°C. The coolest is July at 12°C.
| Month | Average temperature | Rainfall | Verdict |
|---|---|---|---|
| January | 19°C / 67°F | 475 mm | Wet |
| February | 19°C / 66°F | 379 mm | Wet |
| March | 19°C / 66°F | 304 mm | Wet |
| April | 17°C / 63°F | 159 mm | Wet |
| May | 16°C / 60°F | 86 mm | Best |
| June | 13°C / 56°F | 84 mm | Cool |
| July | 12°C / 54°F | 85 mm | Cool |
| August | 13°C / 56°F | 58 mm | Cool |
| September | 15°C / 59°F | 47 mm | Best |
| October | 17°C / 63°F | 96 mm | Best |
| November | 19°C / 66°F | 222 mm | Wet |
| December | 19°C / 67°F | 388 mm | Wet |
How we pick the best months
- Best: an average temperature of 15–28°C and low rainfall for Antananarivo: under 150 mm, and no more than 159 mm, a quarter above Antananarivo's median month (never set below 60 mm).
- If no month qualifies, we show the three driest months that average 10–30°C instead.
- Wet: 150 mm of rain or more. Rainy: more than 159 mm. Hot: 29°C or more on average. Cool: under 15°C. Cold: under 5°C.
Averages cover day and night, so afternoons are warmer than the figure shown. Weather is only one reason to pick a month: school holidays, festivals and prices matter too.
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Where these numbers come from
Monthly averages for January 2001 – December 2020 from the NASA POWER project, for the area around Ivato International (TNR) at -18.80, 47.48. The model covers a grid about 50 km across, so a coastal or hilly spot can run a degree or two different. Retrieved 12 September 2026.
The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center (LaRC) Prediction of Worldwide Energy Resource (POWER) Project funded through the NASA Earth Science/Applied Science Program.