Climate averages 1991–2020
Antananarivo weather
in September.
A warm, very dry month: the 8th warmest and the 4th driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
September is a warm month in Antananarivo: daytime highs average 22.9°C and nights cool to about 11.3°C. By daytime temperature it is the 8th warmest of the 12 months.
Expect about 5.1 mm of rain on roughly 1 day, which makes September a very dry month (the 4th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 58 min on an average September day.
The nearest other city in this atlas is Imerintsiatosika (24 km away). In September its highs average 23.4°C, about as warm as Antananarivo, with 7.1 mm of rain.
Among the 12 cities listed in Madagascar, Antananarivo ranks 10th of 12 for the warmest September highs and 4th of 12 for the driest September (rainfall, lowest first). The mean September high of those 12 cities is 25.2°C; Antananarivo is 2.3°C cooler than that mean.
From September to October, average highs rise by 2.4°C to 25.3°C, and monthly rainfall rises from 5.1 mm to 27 mm.
The annual picture
September in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Antananarivo climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 24.6°C16.8°C | 16.8°C | 287 | 22.1 | 13.113 h |
| February | 24.4°C16.8°C | 16.8°C | 252 | 20.1 | 12.713 h |
| March | 24.3°C16.5°C | 16.5°C | 143 | 15.4 | 12.212 h |
| April | 23.5°C15.2°C | 15.2°C | 32 | 7.0 | 11.712 h |
| May | 21.9°C13.3°C | 13.3°C | 12 | 2.4 | 11.211 h |
| June | 19.6°C11.1°C | 11.1°C | 4.2 | 0.7 | 11.011 h |
| July | 18.7°C10.0°C | 10.0°C | 4.6 | 1.0 | 11.111 h |
| August | 20.2°C10.2°C | 10.2°C | 3.3 | 0.7 | 11.511 h |
| September, selected | 22.9°C11.3°C | 11.3°C | 5.1 | 1.1 | 12.012 h |
| October | 25.3°C13.5°C | 13.5°C | 27 | 4.8 | 12.513 h |
| November | 26.2°C15.2°C | 15.2°C | 79 | 10.3 | 13.013 h |
| December | 25.7°C16.4°C | 16.4°C | 181 | 17.5 | 13.213 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
September in nearby cities
- Imerintsiatosika in SeptemberMadagascar · 24 kmHigh 23.4°C · Low 11.2°C · 7.1 mm rain
- Antanifotsy in SeptemberMadagascar · 85 kmHigh 21.3°C · Low 9.0°C · 12 mm rain
- Antsirabe in SeptemberMadagascar · 118 kmHigh 23.3°C · Low 9.7°C · 10 mm rain
- Toamasina in SeptemberMadagascar · 214 kmHigh 23.5°C · Low 19.4°C · 76 mm rain
- Fianarantsoa in SeptemberMadagascar · 286 kmHigh 21.8°C · Low 11.8°C · 9.2 mm rain
- Mahajanga in SeptemberMadagascar · 378 kmHigh 32.6°C · Low 21.9°C · 2.8 mm rain
- Antalaha in SeptemberMadagascar · 533 kmHigh 25.4°C · Low 20.0°C · 43 mm rain
- Sambava in SeptemberMadagascar · 588 kmHigh 25.5°C · Low 19.9°C · 88 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Antananarivo) is explained once on the Antananarivo year overview and on the Sources, method and limits page.