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Sankt Gallen
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Switzerland weather

Weather in Sankt Gallen for December 2025

Your guide to Sankt Gallen weather in December - trends and predictions

    Official Weather Alert ⚠️

  • Gale Force Wind Warning - See hour by hour.

    • Snow Forecast ❄️

  • Expect heavy snowfall in Sankt Gallen during December, with an average of 19 snowy days.
    According to Sankt Gallen snow forecast for December 2025, no snow is expected in the next 2 weeks.

    • Temperatures

  • So far, December 2025 in Sankt Gallen shows a warmer trend than usual by 2.1 °C.

  • The forecast for the next days in Sankt Gallen predicts temperatures to be around 6 °C, close to the historical average.

  • In general, the average temperature in Sankt Gallen at the beginning of December is 3.4 °C. As the month progressed, temperatures tended to noticeably warm up, reaching an average of 5.7 °C by the end of December.

Average dry days
6
Dry days
Average rainy days
6
Rainy days
Average snowy days
19
Snow days
Average temperatures
5°/0°
Temperatures
Average wind speed
12 km/h
Avg max wind
Average humidity
83 %
Avg humidity

Sankt Gallen Weather December

Move between months or click on a day
November
January
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Heavy snow
4°
2
Moderate or heavy snow showers
5°
3
Mist
2°
4
Light snow
2°
5
Heavy snow
2°
6
Moderate or heavy snow showers
5°
7
Light rain
4°
8
Heavy snow
5°
9
Light drizzle
6°
10
Light rain shower
6°
11
Moderate or heavy rain with thunder
6°
12
Sunny
7°
13
Sunny
7°
14
Weather Alert Sunny
7°
15
Weather Alert Sunny
8°
16
Weather Alert Sunny
7°
17
Partly cloudy
8°
18
Sunny
8°
19
Partly cloudy
7°
20
Partly cloudy
5°
21
Sunny
7°
22
Sunny
5°
23
Sunny
5°
24
Partly cloudy
3°
25
Sunny
4°
26
Partly cloudy
4°
27
Partly cloudy
2°
28
Cloudy
7°
29
Overcast
7°
30
Patchy rain possible
7°
31
Moderate rain at times
9°

Temperatures trend during December in Sankt Gallen

See the weather trend as well as the moving average line

December weather in Sankt Gallen day by day

Click on a date for more information
November January
Date Weather Temperatures Rain UV More
1 Dec. Heavy snow
Heavy snow
 4° /-1° 11.6 mm 2
2 Dec. Moderate or heavy snow showers
Moderate or heavy snow showers
 5° /-3° 8.1 mm 2
3 Dec. Mist
Mist
 2° /-5° 2.2 mm 1
4 Dec. Light snow
Light snow
 2° /-5° 1.3 mm 1
5 Dec. Heavy snow
Heavy snow
 2° /-3° 0.7 mm 1
6 Dec. Moderate or heavy snow showers
Moderate or heavy snow showers
 5° /0° 5.4 mm 2
7 Dec. Light rain
Light rain
 4° /-2° 6.6 mm 2
8 Dec. Heavy snow
Heavy snow
 5° /0° 3.9 mm 2
9 Dec. Light drizzle
Light drizzle
 6° /2° 6.3 mm 2
10 Dec. Light rain shower
Light rain shower
 6° /2° 4.3 mm 2
11 Dec. Moderate or heavy rain with thunder
Moderate or heavy rain with thunder
 6° /2° 19.8 mm 2
12 Dec. Sunny
Sunny
 7° /2° 7.3 mm 2
13 Dec. Sunny
Sunny
 7° /1° 6.4 mm 2
14 Dec. Sunny
Sunny
 7° /1° 0 mm 0.2
15 Dec. Sunny
Sunny
 8° /2° 0 mm 0.2
16 Dec. Sunny
Sunny
 7° /2° 0 mm 0.1
17 Dec. Partly cloudy
Partly cloudy
 8° /3° 0 mm 0.1
18 Dec. Sunny
Sunny
 8° /2° 0 mm 0.2
19 Dec. Partly cloudy
Partly cloudy
 7° /3° 0 mm 2
20 Dec. Partly cloudy
Partly cloudy
 5° /2° 0 mm 2
21 Dec. Sunny
Sunny
 7° /2° 0 mm 2
22 Dec. Sunny
Sunny
 5° /1° 0 mm 2
23 Dec. Sunny
Sunny
 5° /0° 0 mm 2
24 Dec. Partly cloudy
Partly cloudy
 3° /0° 0 mm 2
25 Dec. Sunny
Sunny
 4° /-1° 0 mm 2
26 Dec. Partly cloudy
Partly cloudy
 4° /0° 0 mm 2
27 Dec. Partly cloudy
Partly cloudy
 2° /-2° 0 mm 2
28 Dec. Cloudy
Cloudy
 7° /0° 0 mm 2
29 Dec. Overcast
Overcast
 7° /0° 0.4 mm 2
30 Dec. Patchy rain possible
Patchy rain possible
 7° /0° 1.8 mm 2
31 Dec. Moderate rain at times
Moderate rain at times
 9° /2° 1.6 mm 3
Next
Important Notice
Our weather forecast for Sankt 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 Sankt Gallen forecast closer to your planned date for the most up-to-date weather information.
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Sankt Gallen in December - FAQ

What are the expected maximum and minimum temperatures in Sankt 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 Sankt Gallen during December?
Significant rainfall exceeding 191.8 mm is expected in Sankt Gallen during December, occurring over more than 6 days. Preparing for wet conditions is recommended in your planning.
Will it snow in Sankt Gallen in December 2025?
Sankt Gallen experiences an average snowfall of 45.3983 cm during December, occurring over 19 days.
What are the typical wind conditions in Sankt Gallen during December?
The average wind speed in Sankt Gallen during December is 12 km/h, suggesting breezy to windy conditions, depending on your activities.

December rainfall patterns in Sankt Gallen

Explore the daily rainfall trends and prepare for Sankt Gallens December weather 💧
Typically, Sankt Gallen has 6 rainy days in December with a total of 191.8 mm of rainfall.

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Location coordinates Where is Sankt Gallen?

Get accurate weather forecasts for Sankt Gallen, located at latitude 47.424 and longitude 9.375. Stay updated with localized weather information tailored for Sankt Gallen.

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