Average temperature in December is 3 °C
Average daytime temperature is 6.3 °C
Average night temperature is -0.1 °C
Absolute maximum temperature: 11 °C
Absolute minimum temperature: -11.1 °C
Number of sunny days: 10
Number of rainy days: 19
Number of snow days: 2
Precipitation sum: 193 mm
* Weather data for Sankt Gallen Switzerland 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 | 4.1 | 0.1 | -2.7 | 1.7 | 3.7 | 2.7 | 2.3 | 3.9 | 7.9 | 7.6 | 8.3 | 9.9 | 7.4 | 4.7 | 4.7 | 4.9 | 5.9 | 8.1 | 9.9 | 4.6 | 6.7 | 5.7 | 6.7 | 10.1 | 10.8 | 8.7 | 9.4 | 8.9 | 11 | 9.4 | 8.9 |
| Apparent max temperature | 1.7 | -3.1 | -5.9 | -2.1 | 0.6 | -1 | -0.8 | 1.5 | 3.9 | 4.7 | 4.9 | 7.9 | 5 | 1.5 | 1.6 | 1.9 | 2.9 | 5.2 | 7.4 | 0.4 | 1.7 | -0.1 | 1.5 | 5.9 | 7.4 | 5.2 | 7.8 | 7.2 | 8.1 | 7.5 | 7.2 |
| Mean temperature | 1.9 | -2.5 | -7 | -3.3 | 0.7 | 1.5 | -2.2 | 2 | 4.1 | 5.4 | 6.7 | 7.2 | 5.3 | 3.7 | 2.2 | 0.5 | 1.4 | 2.7 | 3 | 2.3 | 5.2 | 4.6 | 4.8 | 6.5 | 7.3 | 4.2 | 3.3 | 5.7 | 7.4 | 5.1 | 2.7 |
| Apparent mean temperature | -2.5 | -9.6 | -15.4 | -14.6 | -5.2 | -3.4 | -8.8 | -4.4 | -3 | -0.5 | 2.3 | 2.7 | 0.3 | -0.3 | -3.9 | -5.4 | -4.5 | -3.2 | -4.8 | -5.8 | -2.2 | -3 | -1.5 | -1.8 | -2 | -2.2 | -3.5 | -2 | 0.6 | -4.3 | -4.5 |
| Minimum temperature | 0.3 | -6 | -11.1 | -10.5 | -1.3 | 0 | -5 | -0.5 | 0.2 | 3.5 | 5.4 | 5.9 | 3.6 | 3.3 | -0.9 | -2.1 | -0.9 | -0.2 | -1.6 | -2.4 | 2 | 3.5 | 3.3 | 2.2 | 1 | 0.9 | 0.2 | 1.4 | 4.1 | -0.2 | -0.5 |
| Apparent min temperature | -0.5 | -6.3 | -10.9 | -7 | -2.7 | -1.9 | -5.6 | -1 | 1 | 1.2 | 3.6 | 4.6 | 2.7 | 0.5 | -0.6 | -2.6 | -1.6 | -0.4 | -0.1 | -1.7 | -0.2 | -1.3 | -0.4 | 2.5 | 3.4 | 0.8 | 0.4 | 2.7 | 4.4 | 2.5 | -0.8 |
| 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) | 8.8 | 8.7 | 8.7 | 8.7 | 8.7 | 8.6 | 8.6 | 8.6 | 8.6 | 8.6 | 8.5 | 8.5 | 8.5 | 8.5 | 8.5 | 8.5 | 8.5 | 8.5 | 8.5 | 8.5 | 8.4 | 8.4 | 8.5 | 8.5 | 8.5 | 8.5 | 8.5 | 8.5 | 8.5 | 8.5 | 8.5 |
| Sunshine duration (h) | 0 | 0 | 7.5 | 1 | 5.9 | 0.3 | 7.4 | 0 | 2.8 | 3.5 | 0 | 0.5 | 0.2 | 0.2 | 2.6 | 7.2 | 7.2 | 7.2 | 7.2 | 0.7 | 0 | 0 | 2.9 | 2.4 | 7.1 | 7 | 7.1 | 3.2 | 3.3 | 7.2 | 5.3 |
| Precipitation (mm) | 28.6 | 23.5 | 0 | 0.2 | 4.6 | 3.7 | 0.4 | 7.4 | 8.7 | 5.5 | 19.9 | 24 | 18.1 | 6.3 | 2.2 | 0 | 0 | 0 | 0 | 5.9 | 6.4 | 16.3 | 3.2 | 4.6 | 0 | 0 | 0 | 0 | 1 | 0 | 3 |
| Precipitation hours | 24 | 21 | 0 | 2 | 13 | 16 | 3 | 16 | 7 | 6 | 15 | 22 | 17 | 22 | 6 | 0 | 0 | 0 | 0 | 11 | 16 | 24 | 9 | 10 | 0 | 0 | 0 | 0 | 6 | 0 | 6 |
| Wind speed (m/s) | 5.8 | 11.2 | 5.9 | 12.9 | 9.4 | 11.6 | 6.2 | 7.6 | 29.2 | 26.8 | 19.5 | 14.3 | 11.1 | 13.4 | 12.3 | 4.9 | 3.6 | 5 | 5.6 | 15.3 | 34.7 | 34.7 | 30.3 | 19.9 | 18.9 | 10 | 6 | 10.5 | 15.5 | 11.5 | 21 |
In December 2023, the highest daytime temperature in Sankt Gallen was 11°C.
While the minimum temperature at night dropped to -11.1°C.
The average nighttime and daytime temperatures during December in Sankt Gallen are -0.1°C and 6.3°C respectively.
The precipitation sum in December is about 193 mm.