Saint Gallen (Sankt Gallen)
December
Weather in Saint Gallen for December 2025
Your guide to Saint Gallen weather in December - trends and predictions
Gale Force Wind Warning - See hour by hour.
Expect heavy snowfall in Saint Gallen during December, with an average of 19 snowy days.
According to Saint Gallen snow forecast for December 2025, no snow is expected until the end of the month.So far, December 2025 in Saint Gallen is slightly warmer than the historical average by 2 °C.
The forecast for the upcoming days in Saint Gallen predicts a temperature of 6.1 °C, which is slightly above the historical average.
In general, the average temperature in Saint Gallen at the beginning of December is 3.4 °C. As the month progressed, temperatures tended to noticeably warm up, reaching an average of 6 °C by the end of December.
Official Weather Alert ⚠️
Snow Forecast ❄️
Temperatures
6
Dry days
6
Rainy days
19
Snow days
5°/0°
Temperatures
12 km/h
Avg max wind
83 %
Avg humidity
Saint Gallen Weather December
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Temperatures trend during December in Saint Gallen
See the weather trend as well as the moving average line
December weather in Saint Gallen day by day
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| Date | Weather | Temperatures | Rain | Snow | More |
|---|---|---|---|---|---|
| 1 Dec. |  Heavy snow | 4° /-1° | 11.6 mm | 6.8 cm | |
| 2 Dec. |  Moderate or heavy snow showers | 5° /-3° | 8.1 mm | 6.3 cm | |
| 3 Dec. |  Mist | 2° /-5° | 2.2 mm | 0.1 cm | |
| 4 Dec. |  Light snow | 2° /-5° | 1.3 mm | 0.9 cm | |
| 5 Dec. | Heavy snow | 2° /-3° | 0.7 mm | 0.3 cm | |
| 6 Dec. | Moderate or heavy snow showers | 5° /0° | 5.4 mm | 0.9 cm | |
| 7 Dec. |  Light rain | 4° /-2° | 6.6 mm | 0.2 cm | |
| 8 Dec. | Heavy snow | 5° /0° | 3.9 mm | 1 cm | |
| 9 Dec. | Light drizzle | 6° /2° | 6.3 mm | 1 cm | |
| 10 Dec. |  Light rain shower | 6° /2° | 4.3 mm | 0.2 cm | |
| 11 Dec. |  Moderate or heavy rain with thunder | 6° /2° | 19.8 mm | 0.3 cm | |
| 12 Dec. |  Sunny | 7° /2° | 7.3 mm | 0 cm | |
| 13 Dec. | Sunny | 7° /1° | 6.4 mm | 0 cm | |
| 14 Dec. | Heavy snow | 5° /1° | 5.2 mm | 2.2 cm | |
| 15 Dec. | Sunny | 8° /2° | 0 mm | 0 cm | |
| 16 Dec. | Sunny | 7° /2° | 0 mm | 0 cm | |
| 17 Dec. |  Partly cloudy | 8° /4° | 0 mm | 0 cm | |
| 18 Dec. | Sunny | 8° /2° | 0 mm | 0 cm | |
| 19 Dec. | Sunny | 7° /2° | 0 mm | 0 cm | |
| 20 Dec. | Partly cloudy | 5° /0° | 0 mm | 0 cm | |
| 21 Dec. | Sunny | 6° /1° | 0 mm | 0 cm | |
| 22 Dec. | Sunny | 6° /0° | 0 mm | 0 cm | |
| 23 Dec. | Partly cloudy | 6° /1° | 0 mm | 0 cm | |
| 24 Dec. | Sunny | 5° /0° | 0 mm | 0 cm | |
| 25 Dec. | Sunny | 5° /0° | 0 mm | 0 cm | |
| 26 Dec. | Sunny | 5° /0° | 0 mm | 0 cm | |
| 27 Dec. | Partly cloudy | 5° /0° | 0 mm | 0 cm | |
| 28 Dec. | Sunny | 4° /-1° | 0 mm | 0 cm | |
| 29 Dec. |  Overcast | 7° /0° | 0.4 mm | 0 cm | |
| 30 Dec. | Patchy rain possible | 7° /0° | 1.8 mm | 0 cm | |
| 31 Dec. |  Moderate rain at times | 9° /2° | 1.6 mm | 1 cm | |
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Important Notice
Our weather forecast for Saint Gallen in December is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Saint Gallen forecast closer to your planned date for the most up-to-date weather information.
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Saint Gallen in December - FAQ
What are the expected maximum and minimum temperatures in Saint Gallen during December?
Brace for cold days with temperatures not exceeding 5° and nights that are likely to be freezing. Winter clothing is essential for comfort and safety.
How much rainfall should be expected in Saint Gallen during December?
Significant rainfall exceeding 191.8 mm is expected in Saint Gallen during December, occurring over more than 6 days. Preparing for wet conditions is recommended in your planning.
Will it snow in Saint Gallen in December 2025?
Saint Gallen experiences an average snowfall of 45.3983 cm during December, occurring over 19 days.
What are the typical wind conditions in Saint Gallen during December?
The average wind speed in Saint Gallen during December is 12 km/h, suggesting breezy to windy conditions, depending on your activities.
Saint Gallen snow forecast December 2025
Track daily snowfall levels and discover Saint Gallen’s snowy potential this December ❄️
On average, Saint Gallen sees 19 snowy days during December, with approximately 45.4 cm of total snowfall.
December rainfall patterns in Saint Gallen
Explore the daily rainfall trends and prepare for Saint Gallens December weather 💧
Typically, Saint Gallen has 6 rainy days in December with a total of 191.8 mm of rainfall.
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