Climate averages 1991–2020
Iwo 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 Iwo: daytime highs average 28.1°C and nights cool to about 22.1°C. By daytime temperature it is the 10th warmest of the 12 months.
Expect about 174 mm of rain on roughly 26 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 Lalupon (23 km away). In September its highs average 28.1°C, about as warm as Iwo, with 206 mm of rain.
Among the 143 cities listed in Nigeria, Iwo ranks joint 74th of 143 for the warmest September highs and joint 35th of 143 for the driest September (rainfall, lowest first). The mean September high of those 143 cities is 28.6°C; Iwo is 0.5°C cooler than that mean.
From September to October, average highs rise by 1.0°C to 29.1°C, and monthly rainfall falls from 174 mm to 128 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
Iwo climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 34.3°C22.4°C | 22.4°C | 8.8 | 2.2 | 11.712 h |
| February | 34.9°C23.6°C | 23.6°C | 20 | 4.6 | 11.912 h |
| March | 33.6°C24.4°C | 24.4°C | 53 | 12.1 | 12.112 h |
| April | 31.9°C24.2°C | 24.2°C | 76 | 15.4 | 12.312 h |
| May | 30.3°C23.7°C | 23.7°C | 124 | 20.8 | 12.512 h |
| June | 28.6°C22.8°C | 22.8°C | 157 | 25.1 | 12.613 h |
| July | 27.6°C22.0°C | 22.0°C | 162 | 26.0 | 12.513 h |
| August | 27.4°C21.7°C | 21.7°C | 164 | 23.8 | 12.412 h |
| September, selected | 28.1°C22.1°C | 22.1°C | 174 | 25.8 | 12.212 h |
| October | 29.1°C22.5°C | 22.5°C | 128 | 22.9 | 12.012 h |
| November | 30.9°C23.2°C | 23.2°C | 25 | 6.1 | 11.812 h |
| December | 32.9°C22.5°C | 22.5°C | 5.7 | 1.5 | 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
- Lalupon in SeptemberNigeria · 23 kmHigh 28.1°C · Low 22.1°C · 206 mm rain
- Gbongan in SeptemberNigeria · 26 kmHigh 28.2°C · Low 22.1°C · 199 mm rain
- Inisa in SeptemberNigeria · 29 kmHigh 27.7°C · Low 21.5°C · 174 mm rain
- Modakeke in SeptemberNigeria · 29 kmHigh 27.9°C · Low 22.0°C · 199 mm rain
- Ikire in SeptemberNigeria · 30 kmHigh 28.1°C · Low 22.1°C · 239 mm rain
- Ede in SeptemberNigeria · 30 kmHigh 28.1°C · Low 21.8°C · 204 mm rain
- Fiditi in SeptemberNigeria · 30 kmHigh 28.2°C · Low 22.0°C · 164 mm rain
- Ejigbo in SeptemberNigeria · 33 kmHigh 28.0°C · Low 21.7°C · 172 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 Iwo) is explained once on the Iwo year overview and on the Sources, method and limits page.
Inisa lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.