Climate averages 1991–2020
San weather
in September.
A hot, wet month: the 11th warmest and the 10th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a hot month in San: daytime highs average 32.0°C and nights cool to about 23.5°C. By daytime temperature it is the 11th warmest of the 12 months.
Expect about 107 mm of rain on roughly 15 days, which makes September a wet month (the 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 13 min on an average September day.
The nearest other city in this atlas is Koutiala (118 km away). In September its highs average 30.3°C, 1.8°C cooler than San, with 141 mm of rain.
Among the 13 cities listed in Mali, San ranks 5th of 13 for the warmest September highs and 4th of 13 for the driest September (rainfall, lowest first). The mean September high of those 13 cities is 31.9°C; San is 0.1°C warmer than that mean.
From September to October, average highs rise by 3.3°C to 35.4°C, and monthly rainfall falls from 107 mm to 26 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
San climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 32.5°C17.7°C | 17.7°C | 1.0 | 0.2 | 11.411 h |
| February | 35.5°C20.0°C | 20.0°C | 0.1 | 0.0 | 11.712 h |
| March | 38.6°C23.3°C | 23.3°C | 1.0 | 0.4 | 12.112 h |
| April | 40.1°C26.4°C | 26.4°C | 8.8 | 2.6 | 12.412 h |
| May | 39.6°C27.6°C | 27.6°C | 20 | 5.9 | 12.713 h |
| June | 37.2°C26.5°C | 26.5°C | 43 | 10.2 | 12.913 h |
| July | 33.0°C24.3°C | 24.3°C | 123 | 17.2 | 12.813 h |
| August | 30.7°C23.2°C | 23.2°C | 196 | 20.8 | 12.613 h |
| September, selected | 32.0°C23.5°C | 23.5°C | 107 | 14.8 | 12.212 h |
| October | 35.4°C24.0°C | 24.0°C | 26 | 5.8 | 11.812 h |
| November | 35.8°C21.0°C | 21.0°C | 0.5 | 0.2 | 11.512 h |
| December | 33.2°C18.4°C | 18.4°C | 0 | 0.0 | 11.411 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
- Koutiala in SeptemberMali · 118 kmHigh 30.3°C · Low 22.6°C · 141 mm rain
- Ségou in SeptemberMali · 148 kmHigh 31.5°C · Low 23.5°C · 114 mm rain
- Mopti in SeptemberMali · 153 kmHigh 34.5°C · Low 24.8°C · 63 mm rain
- Sikasso in SeptemberMali · 235 kmHigh 29.4°C · Low 22.0°C · 188 mm rain
- Bobo-Dioulasso in SeptemberBurkina Faso · 244 kmHigh 28.9°C · Low 21.5°C · 147 mm rain
- Houndé in SeptemberBurkina Faso · 250 kmHigh 29.6°C · Low 22.1°C · 140 mm rain
- Ouahigouya in SeptemberBurkina Faso · 270 kmHigh 32.9°C · Low 23.5°C · 85 mm rain
- Banfora in SeptemberBurkina Faso · 296 kmHigh 29.2°C · Low 21.7°C · 157 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 San) is explained once on the San year overview and on the Sources, method and limits page.