Climate averages 1991–2020
Ashaiman weather
in September.
A warm, moderately wet month: the 10th warmest and the 8th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a warm month in Ashaiman: daytime highs average 27.8°C and nights cool to about 23.5°C. By daytime temperature it is the 10th warmest of the 12 months.
Expect about 57 mm of rain on roughly 12 days, which makes September a moderately wet month (the 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 09 min on an average September day.
The nearest other city in this atlas is Medina Estates (15 km away). In September its highs average 27.7°C, about as warm as Ashaiman, with 103 mm of rain.
Among the 26 cities listed in Ghana, Ashaiman ranks 18th of 26 for the warmest September highs and 5th of 26 for the driest September (rainfall, lowest first). The mean September high of those 26 cities is 28.2°C; Ashaiman is 0.3°C cooler than that mean.
From September to October, average highs rise by 1.1°C to 29.0°C, and monthly rainfall rises from 57 mm to 62 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
Ashaiman climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 31.5°C24.9°C | 24.9°C | 15 | 4.2 | 11.812 h |
| February | 31.9°C25.7°C | 25.7°C | 20 | 5.2 | 11.912 h |
| March | 32.0°C26.0°C | 26.0°C | 34 | 8.2 | 12.112 h |
| April | 31.6°C25.9°C | 25.9°C | 46 | 10.8 | 12.212 h |
| May | 30.2°C25.3°C | 25.3°C | 92 | 16.5 | 12.412 h |
| June | 28.0°C24.2°C | 24.2°C | 137 | 18.8 | 12.412 h |
| July | 27.0°C23.4°C | 23.4°C | 60 | 10.4 | 12.412 h |
| August | 27.0°C22.9°C | 22.9°C | 35 | 8.5 | 12.312 h |
| September, selected | 27.8°C23.5°C | 23.5°C | 57 | 12.3 | 12.212 h |
| October | 29.0°C24.1°C | 24.1°C | 62 | 13.2 | 12.012 h |
| November | 30.2°C24.9°C | 24.9°C | 34 | 9.9 | 11.912 h |
| December | 31.1°C25.1°C | 25.1°C | 20 | 5.6 | 11.812 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
- Medina Estates in SeptemberGhana · 15 kmHigh 27.7°C · Low 23.0°C · 103 mm rain
- Accra in SeptemberGhana · 24 kmHigh 27.1°C · Low 23.3°C · 39 mm rain
- Atsiaman in SeptemberGhana · 32 kmHigh 28.1°C · Low 23.1°C · 103 mm rain
- Gbawe in SeptemberGhana · 33 kmHigh 27.3°C · Low 23.2°C · 39 mm rain
- Amanfrom in SeptemberGhana · 44 kmHigh 26.8°C · Low 23.0°C · 83 mm rain
- Koforidua in SeptemberGhana · 50 kmHigh 28.4°C · Low 22.2°C · 167 mm rain
- Winneba in SeptemberGhana · 76 kmHigh 27.4°C · Low 23.3°C · 37 mm rain
- Ho in SeptemberGhana · 115 kmHigh 28.6°C · Low 22.1°C · 214 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 Ashaiman) is explained once on the Ashaiman year overview and on the Sources, method and limits page.