Climate averages 1991–2020
Kumasi weather
in September.
A hot, wet month: the 10th warmest and the wettest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a hot month in Kumasi: daytime highs average 28.2°C and nights cool to about 22.0°C. By daytime temperature it is the 10th warmest of the 12 months.
Expect about 141 mm of rain on roughly 24 days, which makes September a wet month (the wettest month of the year). Daylight, from sunrise to sunset, lasts about 12 h 10 min on an average September day.
The nearest other city in this atlas is Obuase (54 km away). In September its highs average 28.3°C, about as warm as Kumasi, with 136 mm of rain.
Among the 26 cities listed in Ghana, Kumasi ranks joint 12th of 26 for the warmest September highs and 15th of 26 for the driest September (rainfall, lowest first). The mean September high of those 26 cities is 28.2°C; Kumasi is 0.1°C warmer than that mean.
From September to October, average highs rise by 0.5°C to 28.8°C, and monthly rainfall falls from 141 mm to 121 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
Kumasi climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 32.9°C22.5°C | 22.5°C | 20 | 3.8 | 11.812 h |
| February | 33.7°C23.6°C | 23.6°C | 42 | 8.1 | 11.912 h |
| March | 32.7°C23.8°C | 23.8°C | 99 | 17.2 | 12.112 h |
| April | 31.8°C23.8°C | 23.8°C | 103 | 17.9 | 12.312 h |
| May | 30.6°C23.4°C | 23.4°C | 117 | 20.0 | 12.412 h |
| June | 28.7°C22.4°C | 22.4°C | 130 | 22.2 | 12.513 h |
| July | 27.7°C21.8°C | 21.8°C | 106 | 19.3 | 12.512 h |
| August | 27.7°C21.7°C | 21.7°C | 92 | 17.9 | 12.312 h |
| September, selected | 28.2°C22.0°C | 22.0°C | 141 | 23.9 | 12.212 h |
| October | 28.8°C22.2°C | 22.2°C | 121 | 21.9 | 12.012 h |
| November | 29.7°C22.3°C | 22.3°C | 60 | 12.6 | 11.812 h |
| December | 31.2°C22.4°C | 22.4°C | 22 | 4.9 | 11.712 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
- Obuase in SeptemberGhana · 54 kmHigh 28.3°C · Low 22.2°C · 136 mm rain
- Ejura in SeptemberGhana · 83 kmHigh 29.7°C · Low 22.2°C · 174 mm rain
- Sunyani in SeptemberGhana · 106 kmHigh 28.2°C · Low 21.9°C · 132 mm rain
- Techiman in SeptemberGhana · 106 kmHigh 28.2°C · Low 21.4°C · 181 mm rain
- Twifu Praso in SeptemberGhana · 120 kmHigh 28.3°C · Low 22.5°C · 185 mm rain
- Berekum in SeptemberGhana · 136 kmHigh 28.2°C · Low 21.9°C · 131 mm rain
- Japekrom in SeptemberGhana · 162 kmHigh 28.5°C · Low 22.1°C · 142 mm rain
- Koforidua in SeptemberGhana · 165 kmHigh 28.4°C · Low 22.2°C · 167 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 Kumasi) is explained once on the Kumasi year overview and on the Sources, method and limits page.