Climate averages 1991–2020
Nouakchott weather
in September.
A hot, fairly dry month: the 3rd warmest and the wettest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a hot month in Nouakchott: daytime highs average 33.7°C and nights cool to about 25.6°C. By daytime temperature it is the 3rd warmest of the 12 months.
Expect about 18 mm of rain on roughly 3 days, which makes September a fairly dry month (the wettest month of the year). Daylight, from sunrise to sunset, lasts about 12 h 15 min on an average September day.
The nearest other city in this atlas is Richard-Toll (183 km away). In September its highs average 35.8°C, 2.1°C warmer than Nouakchott, with 55 mm of rain.
Among the 2 cities listed in Mauritania, Nouakchott ranks 1st of 2 for the warmest September highs and 2nd of 2 for the driest September (rainfall, lowest first). The mean September high of those 2 cities is 30.8°C; Nouakchott is 2.8°C warmer than that mean.
From September to October, average highs rise by 1.0°C to 34.7°C, and monthly rainfall falls from 18 mm to 6.4 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
Nouakchott climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 26.6°C15.8°C | 15.8°C | 2.2 | 0.3 | 11.211 h |
| February | 28.4°C17.1°C | 17.1°C | 0.9 | 0.3 | 11.512 h |
| March | 30.5°C18.4°C | 18.4°C | 0.3 | 0.1 | 12.012 h |
| April | 31.7°C19.7°C | 19.7°C | 0.1 | 0.0 | 12.513 h |
| May | 33.1°C21.5°C | 21.5°C | 0.1 | 0.0 | 13.013 h |
| June | 33.8°C23.0°C | 23.0°C | 0.3 | 0.0 | 13.213 h |
| July | 30.9°C23.5°C | 23.5°C | 1.6 | 0.4 | 13.113 h |
| August | 31.7°C24.9°C | 24.9°C | 13 | 2.4 | 12.713 h |
| September, selected | 33.7°C25.6°C | 25.6°C | 18 | 2.8 | 12.312 h |
| October | 34.7°C24.3°C | 24.3°C | 6.4 | 1.1 | 11.712 h |
| November | 31.7°C20.8°C | 20.8°C | 1.1 | 0.2 | 11.311 h |
| December | 28.0°C17.6°C | 17.6°C | 4.0 | 0.3 | 11.111 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
- Richard-Toll in SeptemberSenegal · 183 kmHigh 35.8°C · Low 25.5°C · 55 mm rain
- Saint-Louis in SeptemberSenegal · 236 kmHigh 30.9°C · Low 26.1°C · 52 mm rain
- Louga in SeptemberSenegal · 276 kmHigh 32.5°C · Low 24.5°C · 89 mm rain
- Nouadhibou in SeptemberMauritania · 336 kmHigh 28.0°C · Low 22.4°C · 2.4 mm rain
- Touba in SeptemberSenegal · 359 kmHigh 31.8°C · Low 23.7°C · 120 mm rain
- Tivaouane in SeptemberSenegal · 360 kmHigh 30.6°C · Low 24.3°C · 108 mm rain
- Mbaké in SeptemberSenegal · 367 kmHigh 31.6°C · Low 23.6°C · 120 mm rain
- Thiès in SeptemberSenegal · 380 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 Nouakchott) is explained once on the Nouakchott year overview and on the Sources, method and limits page.