Average temperature in December is 21.1 °C
Average daytime temperature is 25.6 °C
Average night temperature is 16.6 °C
Absolute maximum temperature: 27.9 °C
Absolute minimum temperature: 10.3 °C
Number of sunny days: 12
Number of rainy days: 19
Number of snow days:
Precipitation sum: 55 mm
* Weather data for Santo Tomás La Unión Guatemala is based on climate observations for 2023 year
| Dicembre (°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 | 25.1 | 25.1 | 25.4 | 26.2 | 25.8 | 25.8 | 26.1 | 25.7 | 25.9 | 26.5 | 26.8 | 27.9 | 27.6 | 27.1 | 25.2 | 25.7 | 25 | 23.4 | 23.9 | 23.8 | 24.2 | 25.9 | 26 | 26.1 | 25.4 | 25.7 | 26.1 | 25.7 | 25.2 | 25 | 25.3 |
| Apparent max temperature | 29 | 29.2 | 28.9 | 29.8 | 29.9 | 29.3 | 30.4 | 29.7 | 30 | 30.2 | 30.7 | 32.1 | 32.1 | 31.6 | 28.8 | 29.1 | 29 | 26.4 | 26.3 | 25.9 | 26.7 | 28.5 | 28.7 | 29.6 | 27.7 | 28.7 | 29 | 28.9 | 28.9 | 28.9 | 29.1 |
| Mean temperature | 21.7 | 21.6 | 21.3 | 21.2 | 22.3 | 21.5 | 21.7 | 21.3 | 21.3 | 22 | 23 | 22.5 | 24 | 23.1 | 21.3 | 22.2 | 21.7 | 19.7 | 17.4 | 18.4 | 17.9 | 18.6 | 20.9 | 21.6 | 20.8 | 21 | 21 | 21.1 | 21.5 | 20.4 | 20.5 |
| Apparent mean temperature | 18.3 | 17.9 | 17.4 | 16.6 | 19.6 | 16.8 | 19.6 | 16.8 | 17 | 18 | 20.4 | 17.8 | 22 | 20 | 17.9 | 19.7 | 20.4 | 16.4 | 8.7 | 11.1 | 9.5 | 10.5 | 14.9 | 17.2 | 16.5 | 16.3 | 15 | 16.7 | 18.2 | 15.3 | 14.3 |
| Minimum temperature | 18 | 17.6 | 17.4 | 16.5 | 18.2 | 16.9 | 18.6 | 16.9 | 16.8 | 17.9 | 19.1 | 18.4 | 20.9 | 18.9 | 17.5 | 18.8 | 18.3 | 16 | 10.3 | 12.3 | 11.6 | 12.3 | 15.5 | 17.2 | 17.1 | 16.1 | 15.5 | 16.9 | 17.3 | 15.9 | 14.7 |
| Apparent min temperature | 23.8 | 24.1 | 23.3 | 23 | 25.3 | 23.6 | 24.1 | 23.2 | 23.3 | 23.8 | 25.3 | 24 | 27 | 25.6 | 23.7 | 24.7 | 24.6 | 21.6 | 18 | 18.8 | 17.9 | 18.9 | 21.6 | 23.4 | 22.1 | 22.6 | 22.4 | 22.7 | 23.5 | 22.2 | 22.2 |
| Dicembre | 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) | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 |
| Sunshine duration (h) | 9.7 | 9.7 | 10.4 | 9.9 | 10.2 | 10.3 | 10.1 | 10.2 | 10.3 | 10.2 | 10.2 | 10.2 | 10.1 | 10.3 | 8.6 | 10.1 | 10 | 10.1 | 10.3 | 10.3 | 10.4 | 10.3 | 10.3 | 10.2 | 10 | 9.7 | 10.2 | 10.3 | 10 | 10.3 | 10.4 |
| Precipitation (mm) | 0.5 | 0 | 0 | 0 | 1.9 | 11.4 | 2.6 | 0.1 | 0 | 0.1 | 1.8 | 2.9 | 1.7 | 1.5 | 2 | 3.5 | 12.9 | 1.3 | 4.4 | 0.8 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2.3 | 2.6 | 0.9 |
| Precipitation hours | 2 | 0 | 0 | 0 | 4 | 7 | 8 | 1 | 0 | 1 | 6 | 6 | 5 | 4 | 4 | 9 | 15 | 7 | 6 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 9 | 7 | 3 |
| Wind speed (m/s) | 7.8 | 8.8 | 9.3 | 9.6 | 10.4 | 8.2 | 9.4 | 9.2 | 8.9 | 8.3 | 10.3 | 13 | 9.7 | 9.5 | 7.1 | 8.4 | 9.3 | 8.4 | 9.7 | 6.8 | 10 | 11.8 | 11.4 | 7.9 | 8.9 | 8 | 7.9 | 7.7 | 8 | 7.1 | 8.8 |
In December 2023, the highest daytime temperature in Santo Tomás La Unión was 27.9°C.
While the minimum temperature at night dropped to 10.3°C.
The average nighttime and daytime temperatures during December in Santo Tomás La Unión are 16.6°C and 25.6°C respectively.
The precipitation sum in December is about 55 mm.