Climate averages 1991–2020
Aku weather
in September.
A hot, very 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 Aku: 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 295 mm of rain on roughly 28 days, which makes September a very 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 Nsukka (19 km away). In September its highs average 27.6°C, 0.6°C cooler than Aku, with 277 mm of rain.
Among the 143 cities listed in Nigeria, Aku ranks joint 66th of 143 for the warmest September highs and 124th of 143 for the driest September (rainfall, lowest first). The mean September high of those 143 cities is 28.6°C; Aku is 0.5°C cooler than that mean.
From September to October, average highs rise by 0.7°C to 28.9°C, and monthly rainfall falls from 295 mm to 264 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
Aku climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 34.4°C22.2°C | 22.2°C | 9.9 | 2.1 | 11.812 h |
| February | 34.8°C23.3°C | 23.3°C | 23 | 5.2 | 11.912 h |
| March | 33.6°C24.1°C | 24.1°C | 71 | 12.0 | 12.112 h |
| April | 31.7°C23.9°C | 23.9°C | 132 | 17.0 | 12.312 h |
| May | 30.0°C23.4°C | 23.4°C | 218 | 24.6 | 12.412 h |
| June | 28.5°C22.5°C | 22.5°C | 267 | 26.9 | 12.513 h |
| July | 27.5°C21.8°C | 21.8°C | 247 | 28.5 | 12.512 h |
| August | 27.5°C21.7°C | 21.7°C | 244 | 27.1 | 12.312 h |
| September, selected | 28.2°C22.0°C | 22.0°C | 295 | 28.4 | 12.212 h |
| October | 28.9°C22.3°C | 22.3°C | 264 | 27.0 | 12.012 h |
| November | 30.6°C22.5°C | 22.5°C | 60 | 8.9 | 11.812 h |
| December | 33.2°C22.0°C | 22.0°C | 7.8 | 1.6 | 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
- Nsukka in SeptemberNigeria · 19 kmHigh 27.6°C · Low 21.4°C · 277 mm rain
- Enugu in SeptemberNigeria · 36 kmHigh 29.0°C · Low 22.5°C · 267 mm rain
- Eha Amufu in SeptemberNigeria · 49 kmHigh 29.6°C · Low 22.8°C · 245 mm rain
- Awka in SeptemberNigeria · 62 kmHigh 28.8°C · Low 22.8°C · 222 mm rain
- Agulu in SeptemberNigeria · 73 kmHigh 28.3°C · Low 22.2°C · 279 mm rain
- Effium in SeptemberNigeria · 82 kmHigh 29.4°C · Low 22.8°C · 241 mm rain
- Nkpor in SeptemberNigeria · 82 kmHigh 28.4°C · Low 22.7°C · 200 mm rain
- Igbo-Ukwu in SeptemberNigeria · 84 kmHigh 27.1°C · Low 21.1°C · 279 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 Aku) is explained once on the Aku year overview and on the Sources, method and limits page.