Climate averages 1991–2020
Mamou weather
in September.
A warm, very wet month: the 10th warmest and the 10th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a warm month in Mamou: daytime highs average 26.8°C and nights cool to about 20.0°C. By daytime temperature it is the 10th warmest of the 12 months.
Expect about 334 mm of rain on roughly 28 days, which makes September a very wet month (the 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 11 min on an average September day.
The nearest other city in this atlas is Kindia (92 km away). In September its highs average 27.8°C, 1.0°C warmer than Mamou, with 326 mm of rain.
Among the 13 cities listed in Guinea, Mamou ranks 12th 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 27.8°C; Mamou is 1.0°C cooler than that mean.
From September to October, average highs rise by 1.4°C to 28.1°C, and monthly rainfall falls from 334 mm to 199 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
Mamou climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 31.8°C18.0°C | 18.0°C | 4.0 | 0.9 | 11.612 h |
| February | 33.6°C19.2°C | 19.2°C | 2.3 | 0.7 | 11.812 h |
| March | 34.6°C20.8°C | 20.8°C | 11 | 2.5 | 12.112 h |
| April | 33.9°C21.7°C | 21.7°C | 42 | 6.2 | 12.412 h |
| May | 30.8°C21.7°C | 21.7°C | 165 | 19.6 | 12.613 h |
| June | 28.1°C20.8°C | 20.8°C | 282 | 27.4 | 12.713 h |
| July | 26.2°C20.1°C | 20.1°C | 349 | 29.9 | 12.713 h |
| August | 25.6°C19.9°C | 19.9°C | 414 | 30.0 | 12.512 h |
| September, selected | 26.8°C20.0°C | 20.0°C | 334 | 28.2 | 12.212 h |
| October | 28.1°C20.1°C | 20.1°C | 199 | 24.8 | 11.912 h |
| November | 29.6°C19.5°C | 19.5°C | 36 | 5.5 | 11.712 h |
| December | 30.9°C18.1°C | 18.1°C | 2.2 | 0.7 | 11.512 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
- Kindia in SeptemberGuinea · 92 kmHigh 27.8°C · Low 21.4°C · 326 mm rain
- Labé in SeptemberGuinea · 107 kmHigh 25.9°C · Low 18.4°C · 259 mm rain
- Faranah in SeptemberGuinea · 152 kmHigh 28.5°C · Low 21.3°C · 289 mm rain
- Manéah in SeptemberGuinea · 162 kmHigh 28.0°C · Low 23.0°C · 465 mm rain
- Makeni in SeptemberSierra Leone · 166 kmHigh 28.4°C · Low 22.4°C · 413 mm rain
- Dubréka in SeptemberGuinea · 170 kmHigh 28.4°C · Low 23.2°C · 465 mm rain
- Conakry in SeptemberGuinea · 197 kmHigh 27.3°C · Low 23.9°C · 516 mm rain
- Koidu in SeptemberSierra Leone · 228 kmHigh 27.3°C · Low 21.4°C · 422 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 Mamou) is explained once on the Mamou year overview and on the Sources, method and limits page.