Antananarivo is warmest in November, averaging 25° by day and 14° at night. The wettest month is January with 502 mm, and the year brings about 2562 mm in total.
Month by month
| Month | High | Low | Rain | Daylight | Good for |
|---|---|---|---|---|---|
| January | 24° | 16° | 502 mm | 13.0 h | Rainy season |
| February | 24° | 16° | 434 mm | 12.6 h | Rainy season |
| March | 23° | 15° | 353 mm | 12.1 h | Rainy season |
| April | 22° | 14° | 294 mm | 11.6 h | Rainy season |
| May | 20° | 12° | 93 mm | 11.1 h | Sightseeing |
| June | 18° | 10° | 81 mm | 10.9 h | Sightseeing |
| July | 18° | 9° | 78 mm | 11.0 h | Sightseeing |
| August | 19° | 9° | 74 mm | 11.4 h | Sightseeing |
| September | 21° | 10° | 42 mm | 11.9 h | Sightseeing |
| October | 24° | 13° | 87 mm | 12.4 h | Sightseeing |
| November | 25° | 14° | 189 mm | 12.9 h | Rainy season |
| December | 25° | 15° | 335 mm | 13.1 h | Rainy season |
High and low are average daily maximum and minimum, rain is typical monthly total, daylight is the hours between sunrise and sunset mid-month. Climate normals from NASA POWER — averages, not promises.
When to go
Beach weather: No month in Antananarivo combines swimming warmth with dry skies.
Walking the city: May, June, July, August, September and October — highs of 18–24° and no more than 93 mm of rain a month.
Wet season: January, February, March, April, November and December — up to 502 mm in a single month.