Climate averages 1991–2020
Bolgatanga weather
in September.
A hot, wet month: the 11th warmest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a hot month in Bolgatanga: daytime highs average 29.6°C and nights cool to about 22.6°C. By daytime temperature it is the 11th warmest of the 12 months.
Expect about 144 mm of rain on roughly 18 days, which makes September a wet month (the 11th 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 Bawku (73 km away). In September its highs average 29.8°C, about as warm as Bolgatanga, with 137 mm of rain.
Among the 26 cities listed in Ghana, Bolgatanga ranks 3rd of 26 for the warmest September highs and 17th of 26 for the driest September (rainfall, lowest first). The mean September high of those 26 cities is 28.2°C; Bolgatanga is 1.5°C warmer than that mean.
From September to October, average highs rise by 2.6°C to 32.3°C, and monthly rainfall falls from 144 mm to 46 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
Bolgatanga climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 35.0°C20.5°C | 20.5°C | 0.3 | 0.1 | 11.612 h |
| February | 37.4°C22.7°C | 22.7°C | 1.8 | 0.5 | 11.812 h |
| March | 39.1°C25.4°C | 25.4°C | 10 | 2.3 | 12.112 h |
| April | 38.6°C26.9°C | 26.9°C | 32 | 6.2 | 12.412 h |
| May | 36.4°C26.2°C | 26.2°C | 53 | 10.3 | 12.613 h |
| June | 33.6°C24.6°C | 24.6°C | 62 | 11.3 | 12.713 h |
| July | 30.5°C23.2°C | 23.2°C | 132 | 19.2 | 12.713 h |
| August | 28.9°C22.6°C | 22.6°C | 211 | 25.2 | 12.512 h |
| September, selected | 29.6°C22.6°C | 22.6°C | 144 | 18.4 | 12.212 h |
| October | 32.3°C23.2°C | 23.2°C | 46 | 8.7 | 11.912 h |
| November | 35.3°C22.0°C | 22.0°C | 3.6 | 0.6 | 11.612 h |
| December | 35.0°C20.7°C | 20.7°C | 0.1 | 0.0 | 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
- Bawku in SeptemberGhana · 73 kmHigh 29.8°C · Low 22.6°C · 137 mm rain
- Tamale in SeptemberGhana · 154 kmHigh 29.0°C · Low 22.4°C · 179 mm rain
- Pouytenga in SeptemberBurkina Faso · 169 kmHigh 31.4°C · Low 22.9°C · 98 mm rain
- Saaba in SeptemberBurkina Faso · 187 kmHigh 31.5°C · Low 23.1°C · 108 mm rain
- Ouagadougou in SeptemberBurkina Faso · 191 kmHigh 31.5°C · Low 23.1°C · 108 mm rain
- Fada N'gourma in SeptemberBurkina Faso · 194 kmHigh 30.8°C · Low 22.8°C · 105 mm rain
- Wa in SeptemberGhana · 198 kmHigh 28.9°C · Low 21.9°C · 190 mm rain
- Jirapa in SeptemberGhana · 204 kmHigh 29.2°C · Low 21.9°C · 155 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 Bolgatanga) is explained once on the Bolgatanga year overview and on the Sources, method and limits page.