Climate averages 1991–2020
Richard-Toll weather
in September.
A very hot, moderately wet month: the joint 6th warmest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a very hot month in Richard-Toll: daytime highs average 35.8°C and nights cool to about 25.5°C. By daytime temperature it is the joint 6th warmest of the 12 months.
Expect about 55 mm of rain on roughly 8 days, which makes September a moderately wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 14 min on an average September day.
The nearest other city in this atlas is Saint-Louis (98 km away). In September its highs average 30.9°C, 4.9°C cooler than Richard-Toll, with 52 mm of rain.
Among the 16 cities listed in Senegal, Richard-Toll ranks 1st of 16 for the warmest September highs and 2nd of 16 for the driest September (rainfall, lowest first). The mean September high of those 16 cities is 31.1°C; Richard-Toll is 4.7°C warmer than that mean.
From September to October, average highs rise by 2.4°C to 38.2°C, and monthly rainfall falls from 55 mm to 16 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
Richard-Toll climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 30.7°C17.6°C | 17.6°C | 3.7 | 0.3 | 11.311 h |
| February | 32.8°C18.9°C | 18.9°C | 1.6 | 0.3 | 11.612 h |
| March | 35.4°C20.0°C | 20.0°C | 0.3 | 0.1 | 12.012 h |
| April | 37.6°C21.1°C | 21.1°C | 0.1 | 0.0 | 12.512 h |
| May | 39.2°C22.6°C | 22.6°C | 0.4 | 0.1 | 12.913 h |
| June | 38.6°C23.2°C | 23.2°C | 1.5 | 0.3 | 13.113 h |
| July | 36.1°C24.3°C | 24.3°C | 12 | 2.2 | 13.013 h |
| August | 34.9°C25.2°C | 25.2°C | 59 | 7.5 | 12.713 h |
| September, selected | 35.8°C25.5°C | 25.5°C | 55 | 8.3 | 12.212 h |
| October | 38.2°C25.0°C | 25.0°C | 16 | 2.9 | 11.812 h |
| November | 35.8°C22.6°C | 22.6°C | 0.9 | 0.2 | 11.411 h |
| December | 32.2°C19.4°C | 19.4°C | 2.1 | 0.3 | 11.211 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
- Saint-Louis in SeptemberSenegal · 98 kmHigh 30.9°C · Low 26.1°C · 52 mm rain
- Louga in SeptemberSenegal · 109 kmHigh 32.5°C · Low 24.5°C · 89 mm rain
- Touba in SeptemberSenegal · 179 kmHigh 31.8°C · Low 23.7°C · 120 mm rain
- Nouakchott in SeptemberMauritania · 183 kmHigh 33.7°C · Low 25.6°C · 18 mm rain
- Mbaké in SeptemberSenegal · 187 kmHigh 31.6°C · Low 23.6°C · 120 mm rain
- Tivaouane in SeptemberSenegal · 206 kmHigh 30.6°C · Low 24.3°C · 108 mm rain
- Diourbel in SeptemberSenegal · 210 kmHigh 31.5°C · Low 23.9°C · 124 mm rain
- Thiès in SeptemberSenegal · 228 kmHigh 30.8°C · Low 24.0°C · 120 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 Richard-Toll) is explained once on the Richard-Toll year overview and on the Sources, method and limits page.