Average temperature in December is 21.3 °C
Average daytime temperature is 26.5 °C
Average night temperature is 17.6 °C
Absolute maximum temperature: 30.3 °C
Absolute minimum temperature: 16.4 °C
Number of sunny days: 1
Number of rainy days: 30
Number of snow days:
Precipitation sum: 113 mm
* Weather data for Siaya Kenya is based on climate observations for 2023 year
| December (°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 | 31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Maximum temperature | 26.7 | 26.4 | 26.5 | 25.7 | 25.1 | 26.2 | 25.3 | 25.6 | 25.9 | 25 | 26.7 | 25.1 | 24.8 | 25.4 | 25.7 | 27.9 | 27.5 | 27.7 | 27.2 | 27.2 | 27.7 | 30.3 | 27.5 | 28 | 27.9 | 27.7 | 29 | 25 | 26.5 | 24.8 | 23.8 |
| Apparent max temperature | 30 | 31 | 31 | 30 | 28.8 | 30.4 | 29 | 28.3 | 29.8 | 28.4 | 31.5 | 28.9 | 27.7 | 29.6 | 30.6 | 32.3 | 31.4 | 30.2 | 30.4 | 29.1 | 30.8 | 32.2 | 31.7 | 32.5 | 32.2 | 29.4 | 31.9 | 28 | 29.5 | 27.7 | 25.6 |
| Mean temperature | 20.9 | 21.1 | 20.7 | 20.1 | 20.3 | 20.5 | 20.7 | 20.7 | 20.7 | 20.2 | 21.1 | 20.7 | 20.6 | 20.4 | 21 | 21.3 | 22.2 | 22 | 22.4 | 22.9 | 22.4 | 22.9 | 22.4 | 22.3 | 22.4 | 22.2 | 22.4 | 20.7 | 21.6 | 21.4 | 20 |
| Apparent mean temperature | 17.2 | 18.2 | 18.2 | 18.1 | 17.4 | 18.1 | 18 | 18 | 17.8 | 18.3 | 18.1 | 19.3 | 18 | 18.3 | 18.4 | 18.8 | 20.3 | 17.3 | 18.7 | 22.2 | 19.3 | 17.9 | 18.7 | 21.1 | 20.4 | 19.8 | 19.8 | 20.3 | 20 | 20.5 | 19.3 |
| Minimum temperature | 16.4 | 17.1 | 16.8 | 16.5 | 16.6 | 16.8 | 17 | 16.9 | 17 | 17.6 | 16.6 | 17.4 | 17.1 | 17.2 | 17.4 | 17.2 | 19 | 17 | 17.3 | 20.3 | 18.3 | 18.1 | 17.8 | 19.2 | 18.6 | 17.9 | 18.7 | 18.4 | 18.5 | 18.5 | 17.7 |
| Apparent min temperature | 22.5 | 23.4 | 22.9 | 22.4 | 22.1 | 22.8 | 22.6 | 22.5 | 22.8 | 22.1 | 23.7 | 23 | 22.3 | 22.1 | 23.3 | 23.5 | 24.5 | 24 | 24.5 | 24.7 | 24.2 | 23.9 | 24.4 | 24.6 | 24.8 | 24.2 | 23.7 | 22.7 | 23.8 | 23.5 | 21.8 |
| December | 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 | 31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | 12.1 |
| Sunshine duration (h) | 11 | 11 | 10.6 | 10 | 11 | 11 | 11.1 | 11.1 | 11.1 | 8.9 | 11 | 11 | 11 | 10 | 11.1 | 11 | 11 | 11.2 | 11.2 | 10.5 | 11.2 | 11.3 | 11.2 | 11.2 | 11.2 | 10 | 9.9 | 4 | 10.5 | 10.3 | 7.9 |
| Precipitation (mm) | 0.7 | 0.8 | 2.4 | 14 | 2 | 4.6 | 2.1 | 10 | 4.1 | 12 | 2.6 | 1 | 1.8 | 3.8 | 1.1 | 3 | 0.7 | 0.4 | 0.8 | 0.2 | 2.2 | 0 | 2.2 | 1 | 2.7 | 0.5 | 0.9 | 0.3 | 1.2 | 13 | 20.5 |
| Precipitation hours | 3 | 3 | 3 | 8 | 5 | 4 | 6 | 7 | 10 | 11 | 2 | 6 | 4 | 6 | 5 | 7 | 3 | 3 | 4 | 2 | 3 | 0 | 4 | 3 | 3 | 4 | 4 | 2 | 5 | 10 | 11 |
| Wind speed (m/s) | 15.4 | 10.2 | 13.2 | 10.8 | 11.2 | 13.6 | 11.7 | 10.5 | 16.3 | 13.2 | 10.6 | 13.7 | 11.4 | 12.7 | 10.1 | 10.4 | 15.5 | 13.4 | 13.7 | 13.4 | 11.9 | 22.2 | 15.5 | 14.2 | 11.8 | 15.5 | 21.3 | 14.4 | 12.6 | 10.3 | 12.7 |
In December 2023, the highest daytime temperature in Siaya was 30.3°C.
While the minimum temperature at night dropped to 16.4°C.
The average nighttime and daytime temperatures during December in Siaya are 17.6°C and 26.5°C respectively.
The precipitation sum in December is about 113 mm.