Climate averages 1991–2020
Fianarantsoa weather
in September.
A mild, very dry month: the 8th warmest and the 2nd driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
September is a mild month in Fianarantsoa: daytime highs average 21.8°C and nights cool to about 11.8°C. By daytime temperature it is the 8th warmest of the 12 months.
Expect about 9.2 mm of rain on roughly 3 days, which makes September a very dry month (the 2nd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 57 min on an average September day.
The nearest other city in this atlas is Antsirabe (177 km away). In September its highs average 23.3°C, 1.6°C warmer than Fianarantsoa, with 10 mm of rain.
Among the 12 cities listed in Madagascar, Fianarantsoa ranks 11th of 12 for the warmest September highs and 6th of 12 for the driest September (rainfall, lowest first). The mean September high of those 12 cities is 25.2°C; Fianarantsoa is 3.5°C cooler than that mean.
From September to October, average highs rise by 2.1°C to 23.9°C, and monthly rainfall rises from 9.2 mm to 43 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
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, selected | 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 | 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
September in nearby cities
- Antsirabe in SeptemberMadagascar · 177 kmHigh 23.3°C · Low 9.7°C · 10 mm rain
- Antanifotsy in SeptemberMadagascar · 202 kmHigh 21.3°C · Low 9.0°C · 12 mm rain
- Imerintsiatosika in SeptemberMadagascar · 276 kmHigh 23.4°C · Low 11.2°C · 7.1 mm rain
- Antananarivo in SeptemberMadagascar · 286 kmHigh 22.9°C · Low 11.3°C · 5.1 mm rain
- Tôlanaro in SeptemberMadagascar · 398 kmHigh 24.6°C · Low 18.4°C · 41 mm rain
- Toliara in SeptemberMadagascar · 410 kmHigh 29.6°C · Low 19.2°C · 4.4 mm rain
- Toamasina in SeptemberMadagascar · 440 kmHigh 23.5°C · Low 19.4°C · 76 mm rain
- Mahajanga in SeptemberMadagascar · 643 kmHigh 32.6°C · Low 21.9°C · 2.8 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.