Climate averages 1991–2020
Bamako 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 Bamako: daytime highs average 29.6°C and nights cool to about 22.2°C. By daytime temperature it is the 11th warmest of the 12 months.
Expect about 163 mm of rain on roughly 20 days, which makes September a wet month (the 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 12 min on an average September day.
The nearest other city in this atlas is Dialakorodji (11 km away). In September its highs average 29.9°C, about as warm as Bamako, with 165 mm of rain.
Among the 13 cities listed in Mali, Bamako ranks 9th of 13 for the warmest September highs and 8th of 13 for the driest September (rainfall, lowest first). The mean September high of those 13 cities is 31.9°C; Bamako is 2.3°C cooler than that mean.
From September to October, average highs rise by 2.3°C to 31.9°C, and monthly rainfall falls from 163 mm to 49 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
Bamako climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 32.2°C17.8°C | 17.8°C | 1.5 | 0.2 | 11.511 h |
| February | 35.2°C20.2°C | 20.2°C | 0.7 | 0.1 | 11.712 h |
| March | 37.8°C23.3°C | 23.3°C | 2.1 | 0.6 | 12.112 h |
| April | 39.1°C26.0°C | 26.0°C | 7.0 | 2.2 | 12.412 h |
| May | 37.8°C26.2°C | 26.2°C | 32 | 7.4 | 12.713 h |
| June | 34.2°C24.4°C | 24.4°C | 92 | 14.2 | 12.913 h |
| July | 29.9°C22.6°C | 22.6°C | 198 | 22.1 | 12.813 h |
| August | 28.7°C22.1°C | 22.1°C | 253 | 24.3 | 12.513 h |
| September, selected | 29.6°C22.2°C | 22.2°C | 163 | 20.3 | 12.212 h |
| October | 31.9°C22.5°C | 22.5°C | 49 | 9.1 | 11.912 h |
| November | 34.1°C20.5°C | 20.5°C | 1.9 | 0.4 | 11.612 h |
| December | 32.6°C18.4°C | 18.4°C | 0.1 | 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
- Dialakorodji in SeptemberMali · 11 kmHigh 29.9°C · Low 22.3°C · 165 mm rain
- Kati in SeptemberMali · 18 kmHigh 29.5°C · Low 21.9°C · 165 mm rain
- Bougouni in SeptemberMali · 143 kmHigh 29.1°C · Low 21.7°C · 188 mm rain
- Kita in SeptemberMali · 171 kmHigh 29.4°C · Low 22.0°C · 188 mm rain
- Siguiri in SeptemberGuinea · 185 kmHigh 29.0°C · Low 21.6°C · 219 mm rain
- Ségou in SeptemberMali · 208 kmHigh 31.5°C · Low 23.5°C · 114 mm rain
- Koutiala in SeptemberMali · 274 kmHigh 30.3°C · Low 22.6°C · 141 mm rain
- Kankan in SeptemberGuinea · 287 kmHigh 29.0°C · Low 21.2°C · 275 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 Bamako) is explained once on the Bamako year overview and on the Sources, method and limits page.