Osun State weather in September
September is one of the least pleasant months in Osun State: highs of 28°C (82°F) and about 288 mm (11.3 in) of rain on average. Nights average 21°C (70°F) and cloud cover 86% (NASA POWER, 2001–2025 averages). It is the wettest month of the year and the 3rd coolest. Compared with August, it is about as warm and wetter; October brings highs of 28°C (83°F) and 190 mm (7.5 in) of rain.
Figures are long-term averages for Osogbo, the largest city in Osun State. See below for other places.
Is September a good time to visit Osun State?
least pleasant month Weather score 35/100.
September is one of the least pleasant months for weather in Osun State. For better conditions, consider Nov–Mar.
Does it rain a lot in Osun State in September?
Yes, it is one of the rainy months: about 288 mm (11.3 in) falls in an average September. It is the wettest month of the year.
How warm is Osun State in September?
Days average 28°C (82°F) and nights 21°C (70°F).
Osun State weather by month
| Month | High | Low | Rain | Cloud | Weather |
|---|---|---|---|---|---|
| January | 31°C (87°F) | 18°C (64°F) | 15 mm | 39% | best |
| February | 32°C (89°F) | 21°C (69°F) | 20 mm | 54% | best |
| March | 31°C (88°F) | 22°C (72°F) | 56 mm | 71% | best |
| April | 30°C (86°F) | 23°C (73°F) | 113 mm | 76% | fair |
| May | 29°C (84°F) | 22°C (72°F) | 161 mm | 76% | fair |
| June | 28°C (82°F) | 22°C (71°F) | 214 mm | 78% | least pleasant |
| July | 27°C (81°F) | 21°C (70°F) | 206 mm | 85% | least pleasant |
| August | 27°C (81°F) | 21°C (69°F) | 190 mm | 86% | least pleasant |
| September | 28°C (82°F) | 21°C (70°F) | 288 mm | 86% | least pleasant |
| October | 28°C (83°F) | 21°C (71°F) | 190 mm | 79% | fair |
| November | 30°C (85°F) | 21°C (69°F) | 33 mm | 56% | best |
| December | 30°C (86°F) | 18°C (65°F) | 13 mm | 39% | best |
Sources: 2001–2025 monthly averages from NASA POWER (MERRA-2 reanalysis). Page updated . How we rate months
Weather across Osun State in September
Weather can differ a lot within Osun State: coasts, hills and mountains each have their own climate.
| Place | High | Low | Rain | Weather |
|---|---|---|---|---|
| Osogbo | 28°C (82°F) | 21°C (70°F) | 288 mm | least pleasant |
| Ile-Ife | 27°C (81°F) | 21°C (70°F) | 317 mm | least pleasant |
| Ilesa | 27°C (81°F) | 21°C (70°F) | 293 mm | least pleasant |
| Iwo | 27°C (81°F) | 21°C (70°F) | 317 mm | least pleasant |
| Ikire | 27°C (81°F) | 21°C (70°F) | 317 mm | least pleasant |
| Ila Orangun | 27°C (81°F) | 21°C (69°F) | 255 mm | least pleasant |
| Inisa | 28°C (82°F) | 21°C (70°F) | 288 mm | least pleasant |
| Ede | 27°C (81°F) | 21°C (70°F) | 317 mm | least pleasant |
| Gbongan | 27°C (81°F) | 21°C (70°F) | 317 mm | least pleasant |
| Ejigbo | 28°C (82°F) | 21°C (70°F) | 288 mm | least pleasant |
| Ikirun | 28°C (82°F) | 21°C (70°F) | 288 mm | least pleasant |
| Modakeke | 27°C (81°F) | 21°C (70°F) | 317 mm | least pleasant |