Cotonou Weather in September
Cotonou in September
The short of it: Cotonou in September averages a high of 30 °C (85 °F) and a low of 23 °C (74 °F), with 133 mm (5.2 in) of rain and about 12 h 9 min of daylight. Rated 2 of 5 for a visit; the best months are August and January. Source: TerraClimate climate normals, 1991–2020.
Average high 30° · low 23° · rain 133 mm · daylight 12 h 9 min
✦✦ Travel with care for a visit · best months: August & January
Thirty years of records give Cotonou an average September high of 30°, a low of 23° and some 133 mm of rain. Much like August: highs about 30°, nights near 23°. Easy travelling weather. Wet spells are common — about 133 mm, the 4th wettest month.
The sun is up for about 12 h 9 min in mid-September.
For the traveller: pack linen, a wide hat and water, and an oilskin besides. The Almanac rates September 2 of 5 for a visit; the finest months here are August and January.
Against its neighbours, Cotonou runs warmer than most and about as wet in September. Godomè, 8 km to the WNW, sees much the same highs.
September in Cotonou, by the numbers
- Warmth rank
- 10th warmest of 12
- Rain rank
- 4th wettest of 12
- Versus August
- 1° warmer, 76 mm more rain
- Versus October
- 1° colder
- Day–night spread
- 6°
- Snow season
- seldom any
- Daylight, mid-month
- 12 h 9 min
- Average wind
- 8 km/h
Neighbouring Towns
September averages · distance by the crow’s flight| Town | Distance | High | Low | Rain |
|---|---|---|---|---|
| GodomèAtlantique | 8 km WNW | 30° | 24° | 133 mm |
| GanviéAtlantique | 11 km NNW | 29° | 24° | 134 mm |
| Abomey-CalaviAtlantique | 12 km NW | 29° | 24° | 133 mm |
| EkpéOuémé | 13 km ENE | 29° | 23° | 138 mm |
| HéviéAtlantique | 19 km WNW | 30° | 23° | 130 mm |
| SemiOuémé | 22 km E | 30° | 23° | 142 mm |
| Porto-NovoOuémé | 25 km NE | 29° | 23° | 147 mm |
| MissérétéOuémé | 29 km NE | 30° | 23° | 149 mm |