Climate averages 1991–2020
Toamasina weather
in August.
A warm, wet month: the 11th warmest and the 4th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a warm month in Toamasina: daytime highs average 22.7°C and nights cool to about 18.9°C. By daytime temperature it is the 11th warmest of the 12 months.
Expect about 112 mm of rain on roughly 21 days, which makes August a wet month (the 4th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 30 min on an average August day.
The nearest other city in this atlas is Antananarivo (214 km away). In August its highs average 20.2°C, 2.5°C cooler than Toamasina, with 3.3 mm of rain.
Among the 12 cities listed in Madagascar, Toamasina ranks 7th of 12 for the warmest August highs and 12th of 12 for the driest August (rainfall, lowest first). The mean August high of those 12 cities is 23.4°C; Toamasina is 0.7°C cooler than that mean.
From August to September, average highs rise by 0.9°C to 23.5°C, and monthly rainfall falls from 112 mm to 76 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
Toamasina climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 27.9°C23.7°C | 23.7°C | 305 | 24.9 | 13.113 h |
| February | 27.9°C23.9°C | 23.9°C | 324 | 23.2 | 12.713 h |
| March | 27.3°C23.6°C | 23.6°C | 346 | 26.2 | 12.212 h |
| April | 26.4°C22.9°C | 22.9°C | 200 | 24.2 | 11.712 h |
| May | 25.0°C21.6°C | 21.6°C | 201 | 23.5 | 11.311 h |
| June | 23.3°C19.9°C | 19.9°C | 174 | 24.2 | 11.111 h |
| July | 22.4°C18.9°C | 18.9°C | 180 | 24.3 | 11.111 h |
| August, selected | 22.7°C18.9°C | 18.9°C | 112 | 20.8 | 11.512 h |
| September | 23.5°C19.4°C | 19.4°C | 76 | 17.7 | 12.012 h |
| October | 24.9°C20.8°C | 20.8°C | 77 | 17.0 | 12.512 h |
| November | 26.3°C22.1°C | 22.1°C | 79 | 16.1 | 13.013 h |
| December | 27.4°C23.2°C | 23.2°C | 186 | 22.0 | 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
- Antananarivo in AugustMadagascar · 214 kmHigh 20.2°C · Low 10.2°C · 3.3 mm rain
- Imerintsiatosika in AugustMadagascar · 239 kmHigh 20.6°C · Low 10.0°C · 3.8 mm rain
- Antanifotsy in AugustMadagascar · 276 kmHigh 18.5°C · Low 7.7°C · 7.6 mm rain
- Antsirabe in AugustMadagascar · 314 kmHigh 20.5°C · Low 8.2°C · 5.8 mm rain
- Antalaha in AugustMadagascar · 373 kmHigh 24.4°C · Low 19.6°C · 53 mm rain
- Mahajanga in AugustMadagascar · 425 kmHigh 31.3°C · Low 20.9°C · 1.2 mm rain
- Sambava in AugustMadagascar · 439 kmHigh 24.6°C · Low 19.4°C · 109 mm rain
- Fianarantsoa in AugustMadagascar · 440 kmHigh 19.5°C · Low 10.7°C · 8.5 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 Toamasina) is explained once on the Toamasina year overview and on the Sources, method and limits page.