Climate averages 1991–2020
Abomey 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 Abomey: daytime highs average 28.6°C and nights cool to about 22.0°C. By daytime temperature it is the 10th warmest of the 12 months.
Expect about 160 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 Bohicon (8 km away). In September its highs average 28.9°C, about as warm as Abomey, with 160 mm of rain.
Among the 8 cities listed in Benin, Abomey ranks joint 3rd of 8 for the warmest September highs and joint 5th of 8 for the driest September (rainfall, lowest first). The mean September high of those 8 cities is 28.0°C; Abomey is 0.6°C warmer than that mean.
From September to October, average highs rise by 1.0°C to 29.5°C, and monthly rainfall falls from 160 mm to 105 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
Abomey climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 34.3°C23.0°C | 23.0°C | 9.8 | 2.8 | 11.812 h |
| February | 35.0°C24.1°C | 24.1°C | 24 | 5.7 | 11.912 h |
| March | 34.2°C24.6°C | 24.6°C | 55 | 12.5 | 12.112 h |
| April | 32.9°C24.4°C | 24.4°C | 89 | 16.6 | 12.312 h |
| May | 31.1°C23.7°C | 23.7°C | 132 | 21.9 | 12.412 h |
| June | 29.0°C22.6°C | 22.6°C | 153 | 24.2 | 12.513 h |
| July | 28.1°C21.8°C | 21.8°C | 142 | 23.9 | 12.512 h |
| August | 27.8°C21.5°C | 21.5°C | 152 | 21.9 | 12.412 h |
| September, selected | 28.6°C22.0°C | 22.0°C | 160 | 23.6 | 12.212 h |
| October | 29.5°C22.4°C | 22.4°C | 105 | 19.1 | 12.012 h |
| November | 31.3°C23.1°C | 23.1°C | 26 | 7.5 | 11.812 h |
| December | 33.2°C23.2°C | 23.2°C | 9.3 | 2.3 | 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
- Bohicon in SeptemberBenin · 8 kmHigh 28.9°C · Low 22.4°C · 160 mm rain
- Godomè in SeptemberBenin · 97 kmHigh 27.1°C · Low 23.9°C · 141 mm rain
- Porto-Novo in SeptemberBenin · 102 kmHigh 27.5°C · Low 23.5°C · 144 mm rain
- Atakpamé in SeptemberTogo · 102 kmHigh 27.9°C · Low 21.1°C · 189 mm rain
- Cotonou in SeptemberBenin · 102 kmHigh 26.7°C · Low 24.0°C · 104 mm rain
- Ekpé in SeptemberBenin · 107 kmHigh 27.0°C · Low 23.9°C · 144 mm rain
- Ifo in SeptemberNigeria · 139 kmHigh 28.2°C · Low 22.5°C · 202 mm rain
- Lomé in SeptemberTogo · 145 kmHigh 27.6°C · Low 23.6°C · 117 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 Abomey) is explained once on the Abomey year overview and on the Sources, method and limits page.
Bohicon lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.