Climate averages 1991–2020
Antananarivo weather
in August.
A mild, very dry month: the 10th warmest and the driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
August is a mild month in Antananarivo: daytime highs average 20.2°C and nights cool to about 10.2°C. By daytime temperature it is the 10th warmest of the 12 months.
Expect about 3.3 mm of rain on fewer than one day, which makes August a very dry month (the driest month of the year). Daylight, from sunrise to sunset, lasts about 11 h 28 min on an average August day.
The nearest other city in this atlas is Imerintsiatosika (24 km away). In August its highs average 20.6°C, about as warm as Antananarivo, with 3.8 mm of rain.
Among the 12 cities listed in Madagascar, Antananarivo ranks 10th of 12 for the warmest August highs and 2nd of 12 for the driest August (rainfall, lowest first). The mean August high of those 12 cities is 23.4°C; Antananarivo is 3.2°C cooler than that mean.
From August to September, average highs rise by 2.7°C to 22.9°C, and monthly rainfall rises from 3.3 mm to 5.1 mm.
The annual picture
August 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, selected | 20.2°C10.2°C | 10.2°C | 3.3 | 0.7 | 11.511 h |
| September | 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
August in nearby cities
- Imerintsiatosika in AugustMadagascar · 24 kmHigh 20.6°C · Low 10.0°C · 3.8 mm rain
- Antanifotsy in AugustMadagascar · 85 kmHigh 18.5°C · Low 7.7°C · 7.6 mm rain
- Antsirabe in AugustMadagascar · 118 kmHigh 20.5°C · Low 8.2°C · 5.8 mm rain
- Toamasina in AugustMadagascar · 214 kmHigh 22.7°C · Low 18.9°C · 112 mm rain
- Fianarantsoa in AugustMadagascar · 286 kmHigh 19.5°C · Low 10.7°C · 8.5 mm rain
- Mahajanga in AugustMadagascar · 378 kmHigh 31.3°C · Low 20.9°C · 1.2 mm rain
- Antalaha in AugustMadagascar · 533 kmHigh 24.4°C · Low 19.6°C · 53 mm rain
- Sambava in AugustMadagascar · 588 kmHigh 24.6°C · Low 19.4°C · 109 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.