Average temperature in September is 17.6 °C
Average daytime temperature is 23.5 °C
Average night temperature is 13.6 °C
Absolute maximum temperature: 25.8 °C
Absolute minimum temperature: 11.3 °C
Number of sunny days:
Number of rainy days: 30
Number of snow days:
Precipitation sum: 66 mm
* Weather data for Nyeri Kenya 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 | 22.1 | 23.1 | 23 | 23 | 23.7 | 25.8 | 24.1 | 22.6 | 20.9 | 22.5 | 22.9 | 24.5 | 22.6 | 23 | 21.6 | 23.5 | 24.3 | 24.2 | 24 | 24.7 | 25.5 | 22.9 | 24.1 | 23.2 | 24 | 24.4 | 23.5 | 22.9 | 23.8 | 23.6 |
| Apparent max temperature | 23.8 | 24.6 | 24 | 24.6 | 25.6 | 28.1 | 27 | 24.4 | 21.5 | 23.9 | 24.7 | 25.6 | 23.4 | 23.3 | 22.3 | 25.5 | 26.3 | 26.7 | 26.8 | 27.7 | 26.6 | 24.1 | 24.6 | 23.2 | 24.8 | 26.2 | 25.9 | 23.9 | 24.5 | 25.1 |
| Mean temperature | 17 | 17.3 | 17.2 | 17 | 17.4 | 17.2 | 17.2 | 17.1 | 16.2 | 17.5 | 17.9 | 18.1 | 17.6 | 16.7 | 16.7 | 17.6 | 18.6 | 18.3 | 17.8 | 17.9 | 18.8 | 17.7 | 17.8 | 17.8 | 18.3 | 17.6 | 18.3 | 17.6 | 18.4 | 18.1 |
| Apparent mean temperature | 12.7 | 12.6 | 11.9 | 10.6 | 12.3 | 10.3 | 10.8 | 14.3 | 13.7 | 13 | 14.5 | 12.3 | 14.3 | 12.3 | 13.4 | 12.1 | 13.1 | 13.5 | 13.7 | 13.9 | 13.9 | 13.8 | 12.6 | 13.2 | 12.5 | 12.6 | 14 | 13 | 14.1 | 14.6 |
| Minimum temperature | 13.4 | 13.8 | 13.4 | 11.7 | 13.1 | 11.3 | 11.3 | 13.8 | 14.2 | 13.6 | 14.8 | 12.5 | 14.4 | 13.5 | 14 | 13.2 | 13.7 | 13.8 | 13.7 | 14.2 | 14 | 14 | 14.2 | 14 | 13.6 | 12.8 | 14.4 | 13.5 | 14 | 14.8 |
| Apparent min temperature | 16.9 | 17 | 16.3 | 16.2 | 17.4 | 17.3 | 17.9 | 17.5 | 15.9 | 17.4 | 17.9 | 18.4 | 17.4 | 15.7 | 16.3 | 17.4 | 18.6 | 18.4 | 18.3 | 18.3 | 18.8 | 17.1 | 16.9 | 17.1 | 18.1 | 17.9 | 18.3 | 17.4 | 18.1 | 18 |
| 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) | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 |
| Sunshine duration (h) | 10 | 10.1 | 10.1 | 11 | 10.4 | 11.1 | 11 | 10.7 | 6.8 | 10.6 | 11 | 11.1 | 10.1 | 10 | 8.3 | 10.4 | 10.1 | 10 | 11.1 | 9.6 | 11 | 10 | 10.4 | 11 | 11.1 | 11.1 | 11.1 | 11.1 | 11 | 8.7 |
| Precipitation (mm) | 1.8 | 0.7 | 0.8 | 0.2 | 0.8 | 1 | 5.2 | 1.8 | 1.8 | 0.8 | 1.3 | 0.4 | 5.8 | 2 | 2.1 | 1.3 | 0.4 | 0.2 | 7.7 | 3.9 | 1 | 2.6 | 0.5 | 2.6 | 0.9 | 5.9 | 2.4 | 0.5 | 3.7 | 6.3 |
| Precipitation hours | 8 | 5 | 5 | 2 | 6 | 3 | 5 | 8 | 11 | 6 | 8 | 2 | 15 | 7 | 12 | 10 | 4 | 2 | 7 | 11 | 6 | 11 | 5 | 10 | 5 | 4 | 10 | 4 | 9 | 11 |
| Wind speed (m/s) | 13.1 | 13.2 | 15.6 | 16.2 | 13.9 | 11.1 | 15.3 | 14.5 | 13.7 | 15 | 13.4 | 13.2 | 17.4 | 18.4 | 15.2 | 15.8 | 15.5 | 12.9 | 12.3 | 11.6 | 15.8 | 16.1 | 16.1 | 17.1 | 16.5 | 12.8 | 15.1 | 15.6 | 15.1 | 15.1 |
In September 2023, the highest daytime temperature in Nyeri was 25.8°C.
While the minimum temperature at night dropped to 11.3°C.
The average nighttime and daytime temperatures during September in Nyeri are 13.6°C and 23.5°C respectively.
The precipitation sum in September is about 66 mm.