Climate averages 1991–2020
Toamasina weather
in December.
A warm, very wet month: the 3rd warmest and the 7th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a warm month in Toamasina: daytime highs average 27.4°C and nights cool to about 23.2°C. By daytime temperature it is the 3rd warmest of the 12 months.
Expect about 186 mm of rain on roughly 22 days, which makes December a very wet month (the 7th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 12 min on an average December day.
The nearest other city in this atlas is Antananarivo (214 km away). In December its highs average 25.7°C, 1.8°C cooler than Toamasina, with 181 mm of rain.
Among the 12 cities listed in Madagascar, Toamasina ranks 7th of 12 for the warmest December highs and 7th of 12 for the driest December (rainfall, lowest first). The mean December high of those 12 cities is 27.6°C; Toamasina is 0.1°C cooler than that mean.
From December to January, average highs rise by 0.4°C to 27.9°C, and monthly rainfall rises from 186 mm to 305 mm.
The annual picture
December 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 | 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, selected | 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
December in nearby cities
- Antananarivo in DecemberMadagascar · 214 kmHigh 25.7°C · Low 16.4°C · 181 mm rain
- Imerintsiatosika in DecemberMadagascar · 239 kmHigh 25.5°C · Low 16.3°C · 212 mm rain
- Antanifotsy in DecemberMadagascar · 276 kmHigh 23.6°C · Low 14.2°C · 308 mm rain
- Antsirabe in DecemberMadagascar · 314 kmHigh 24.2°C · Low 14.8°C · 333 mm rain
- Antalaha in DecemberMadagascar · 373 kmHigh 28.9°C · Low 23.3°C · 173 mm rain
- Mahajanga in DecemberMadagascar · 425 kmHigh 31.2°C · Low 24.6°C · 205 mm rain
- Sambava in DecemberMadagascar · 439 kmHigh 29.2°C · Low 23.4°C · 179 mm rain
- Fianarantsoa in DecemberMadagascar · 440 kmHigh 25.2°C · Low 17.1°C · 209 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.