Average annual temperature is 26.5 °C
Absolute maximum temperature: 38.1 °C
Absolute minimum temperature: 15.7 °C
Number of sunny days: 140 days
Number of rainy days: 225 days
Look at detailed online map of Onisa
* Weather data for Onisa Nigeria is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 36.0 | 38.1 | 37.3 | 36.5 | 35.3 | 33.7 | 32.0 | 32.3 | 32.2 | 34.2 | 35.2 | 35.8 |
| Average daytime temperature (°C) | 34.9 | 36.3 | 34.4 | 33.8 | 33.3 | 30.2 | 30.1 | 29.5 | 30.0 | 31.7 | 33.2 | 34.6 |
| Average temperature (°C) | 26.5 | 28.3 | 27.7 | 27.7 | 27.4 | 25.2 | 25.3 | 24.9 | 25.0 | 26.1 | 27.0 | 26.5 |
| Average night temperature (°C) | 19.6 | 22.2 | 23.4 | 23.6 | 23.6 | 22.4 | 22.5 | 22.3 | 22.1 | 22.6 | 22.8 | 19.5 |
| Absolute minimum temperature (°C) | 16.5 | 17.9 | 21.6 | 22.8 | 22.3 | 21.0 | 21.5 | 21.5 | 20.2 | 20.9 | 21.2 | 15.7 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 11.0 | 11.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 11.0 | 11.0 |
| Daylight mean duration (h) | 11.7 | 11.9 | 12.1 | 12.3 | 12.5 | 12.6 | 12.5 | 12.4 | 12.2 | 12.0 | 11.8 | 11.7 |
| Daylight minimum duration (h) | 11.0 | 11.0 | 11.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 |
| Sunshine mean duration (h) | 9.9 | 9.6 | 8.4 | 8.4 | 9.1 | 7.1 | 8.0 | 7.1 | 6.5 | 8.0 | 9.1 | 10.3 |
| Precipitation (mm) | 3 | 0 | 36 | 55 | 44 | 196 | 131 | 138 | 112 | 83 | 34 | 0 |
| Sunny days | 28 | 24 | 14 | 10 | 2 | 2 | 1 | 0 | 2 | 8 | 18 | 31 |
| Rainy days | 3 | 4 | 17 | 20 | 29 | 28 | 30 | 31 | 28 | 23 | 12 | 0 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Onisa is at