Average temperature in September is 20.7 °C
Average daytime temperature is 25.7 °C
Average night temperature is 17.3 °C
Absolute maximum temperature: 29.6 °C
Absolute minimum temperature: 15.9 °C
Number of sunny days:
Number of rainy days: 30
Number of snow days:
Precipitation sum: 166 mm
* Weather data for Riyom Nigeria is based on climate observations for 2023 year
| September (°C) | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Maximum temperature | 26.8 | 23.9 | 23.7 | 21.7 | 25.6 | 27.2 | 27.1 | 27 | 23.6 | 26.5 | 26.5 | 26.1 | 25.6 | 25.3 | 23.3 | 23.9 | 22.2 | 26.2 | 25 | 25.9 | 27.4 | 27.8 | 26.2 | 25.6 | 26.6 | 27.2 | 29.6 | 27.9 | 23.8 | 26 |
| Apparent max temperature | 31.8 | 27.5 | 26.4 | 23.3 | 29.5 | 30.8 | 29.1 | 28.9 | 26.4 | 30.6 | 31.2 | 28.4 | 30.8 | 30.4 | 25.1 | 27.4 | 24.9 | 29.2 | 25.6 | 28.5 | 31.8 | 29.8 | 29 | 28.2 | 29.9 | 33.4 | 33.2 | 32.5 | 24.8 | 29.9 |
| Mean temperature | 20.4 | 19.8 | 20.2 | 19.1 | 20.3 | 21 | 21.4 | 21.6 | 19.8 | 21.2 | 21.3 | 20.9 | 20.2 | 20 | 19.9 | 19.8 | 19.7 | 20.6 | 20.5 | 20.8 | 21.6 | 21.7 | 20.6 | 21.1 | 21.4 | 21.1 | 22.6 | 21.4 | 20 | 20.7 |
| Apparent mean temperature | 18.8 | 19.5 | 19 | 18.7 | 18.8 | 17.7 | 18 | 19.2 | 19.1 | 16.8 | 18.4 | 18.5 | 17 | 19.5 | 19.5 | 18.5 | 20.1 | 19.4 | 19.1 | 18.7 | 18.1 | 19 | 18.5 | 20 | 17.5 | 18.2 | 19.7 | 19.7 | 18.5 | 16.8 |
| Minimum temperature | 17.4 | 17.7 | 17.6 | 17.2 | 17.1 | 16.9 | 17 | 16.9 | 17.6 | 15.9 | 17.2 | 17.8 | 16.6 | 17.6 | 17.5 | 16.7 | 18 | 17.8 | 17.4 | 17.6 | 16.9 | 17.7 | 17.4 | 18 | 16.3 | 16.4 | 18.4 | 18.4 | 17.6 | 16.3 |
| Apparent min temperature | 22.9 | 21.8 | 22.2 | 20.9 | 22.4 | 23.2 | 23.1 | 23.8 | 21.6 | 23.5 | 23.7 | 22.1 | 22.3 | 22.3 | 21.8 | 22 | 21.9 | 22.5 | 21.8 | 22.5 | 24.3 | 23.4 | 22.4 | 23.4 | 23.8 | 23.8 | 25.2 | 23.8 | 21.5 | 22.7 |
| September | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight duration (h) | 12.3 | 12.3 | 12.3 | 12.3 | 12.3 | 12.3 | 12.3 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.2 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12 |
| Sunshine duration (h) | 9.3 | 9.6 | 10.6 | 5.7 | 10.9 | 11.2 | 11.2 | 11 | 6.2 | 11.1 | 11.1 | 9 | 10.6 | 5.9 | 4.9 | 8.2 | 3.7 | 9.3 | 7.9 | 10.4 | 11.1 | 11 | 11.1 | 8.6 | 10.7 | 10.4 | 11 | 10 | 2.6 | 10.6 |
| Precipitation (mm) | 11.5 | 3.4 | 6.4 | 8.5 | 5.8 | 2.8 | 0.6 | 1.1 | 0.2 | 0.7 | 17.8 | 1.8 | 3.9 | 24.4 | 20.3 | 12.2 | 6.9 | 3.6 | 0.2 | 1.3 | 0.4 | 3.4 | 7.3 | 2.2 | 0.2 | 1.8 | 0.2 | 10.7 | 2.8 | 3.9 |
| Precipitation hours | 5 | 10 | 9 | 14 | 8 | 5 | 5 | 5 | 2 | 1 | 8 | 4 | 7 | 10 | 11 | 9 | 16 | 6 | 2 | 6 | 4 | 5 | 8 | 7 | 2 | 4 | 2 | 6 | 10 | 6 |
| Wind speed (m/s) | 15.3 | 14.5 | 12.1 | 10.5 | 13.5 | 13 | 19.2 | 14.7 | 13.3 | 9.1 | 15.4 | 14 | 10.4 | 14.3 | 13.2 | 12.2 | 10.5 | 12.6 | 17.3 | 20.8 | 9.1 | 18.9 | 18.1 | 14.1 | 13 | 18.4 | 12.9 | 13 | 10.8 | 14.6 |
In September 2023, the highest daytime temperature in Riyom was 29.6°C.
While the minimum temperature at night dropped to 15.9°C.
The average nighttime and daytime temperatures during September in Riyom are 17.3°C and 25.7°C respectively.
The precipitation sum in September is about 166 mm.