Climate averages 1991–2020
Fianarantsoa weather
in December.
A warm, very wet month: the warmest and the 10th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a warm month in Fianarantsoa: daytime highs average 25.2°C and nights cool to about 17.1°C. By daytime temperature it is the warmest month of the year.
Expect about 209 mm of rain on roughly 20 days, which makes December a very wet month (the 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 25 min on an average December day.
The nearest other city in this atlas is Antsirabe (177 km away). In December its highs average 24.2°C, 1.0°C cooler than Fianarantsoa, with 333 mm of rain.
Among the 12 cities listed in Madagascar, Fianarantsoa ranks 10th of 12 for the warmest December highs and 9th of 12 for the driest December (rainfall, lowest first). The mean December high of those 12 cities is 27.6°C; Fianarantsoa is 2.4°C cooler than that mean.
From December to January, average highs fall by 0.6°C to 24.6°C, and monthly rainfall rises from 209 mm to 287 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
Fianarantsoa climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 24.6°C17.6°C | 17.6°C | 287 | 22.8 | 13.313 h |
| February | 24.2°C17.5°C | 17.5°C | 215 | 19.2 | 12.813 h |
| March | 23.9°C17.1°C | 17.1°C | 146 | 16.7 | 12.212 h |
| April | 22.8°C15.6°C | 15.6°C | 49 | 10.3 | 11.612 h |
| May | 21.0°C13.8°C | 13.8°C | 24 | 5.4 | 11.111 h |
| June | 18.9°C11.5°C | 11.5°C | 12 | 3.1 | 10.811 h |
| July | 17.9°C10.5°C | 10.5°C | 15 | 3.5 | 11.011 h |
| August | 19.5°C10.7°C | 10.7°C | 8.5 | 2.7 | 11.411 h |
| September | 21.8°C11.8°C | 11.8°C | 9.2 | 2.5 | 12.012 h |
| October | 23.9°C14.0°C | 14.0°C | 43 | 7.4 | 12.613 h |
| November | 25.1°C15.8°C | 15.8°C | 95 | 12.6 | 13.113 h |
| December, selected | 25.2°C17.1°C | 17.1°C | 209 | 19.7 | 13.413 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
- Antsirabe in DecemberMadagascar · 177 kmHigh 24.2°C · Low 14.8°C · 333 mm rain
- Antanifotsy in DecemberMadagascar · 202 kmHigh 23.6°C · Low 14.2°C · 308 mm rain
- Imerintsiatosika in DecemberMadagascar · 276 kmHigh 25.5°C · Low 16.3°C · 212 mm rain
- Antananarivo in DecemberMadagascar · 286 kmHigh 25.7°C · Low 16.4°C · 181 mm rain
- Tôlanaro in DecemberMadagascar · 398 kmHigh 27.8°C · Low 22.3°C · 129 mm rain
- Toliara in DecemberMadagascar · 410 kmHigh 31.7°C · Low 24.1°C · 79 mm rain
- Toamasina in DecemberMadagascar · 440 kmHigh 27.4°C · Low 23.2°C · 186 mm rain
- Mahajanga in DecemberMadagascar · 643 kmHigh 31.2°C · Low 24.6°C · 205 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 Fianarantsoa) is explained once on the Fianarantsoa year overview and on the Sources, method and limits page.