How warm is it in St. Moritz in December?

Daytime highs averaged -2.9 °C, night-time lows -11.4 °C. The highest value of the past 10 years was 4.2 °C (10 Dec 2016), the lowest -25.1 °C (11 Dec 2022).

How often does it rain in St. Moritz in December?

On average there were 12.2 rain days (at least 1 mm) with 70.2 mm of precipitation in total.

🇨🇭 Weather in St. Moritz in December

This is what the weather in St. Moritz (Grisons, Switzerland) was like in December in 2016–2025.

Key facts at a glance

Prevailing weather: Partly cloudy

Avg. daytime high

-2.9 °C

-5.4 °C – -1.0 °C

Avg. night-time low

-11.4 °C

-15.2 °C – -8.9 °C

Avg. rain days in period

12.2

39 % of days · ≥ 1.0 mm

Avg. precipitation in period

70.2 mm

3.6 mm – 134 mm

Avg. cloud cover

75 %

This data source has no sunshine hours – average cloud cover shown instead.

Avg. sea temperature

–

No sea nearby – no sea temperature.

Extremes: Highest temperature 4.2 °C (10 Dec 2016) · Lowest temperature -25.1 °C (11 Dec 2022) · Avg. daily peak wind 10 km/h

Weather mix of all days

1Sunny
112Partly cloudy
75Cloudy
82Light rain
40Rain

Summary

On average -2.9 °C during the day and -11.4 °C at night.
On average 12.2 rain days (Rain day = at least 1.0 mm of precipitation) with 70.2 mm of precipitation in total.
Prevailing: Partly cloudy.
Warmest year: 2016 (avg. -1.0 °C), coolest: 2017 (avg. -5.4 °C).
Wettest year: 2020 (134 mm), driest: 2016 (3.6 mm).
Extremes: 4.2 °C on 10 Dec 2016 and -25.1 °C on 11 Dec 2022.

Overall values from all 10 years. How is this calculated?

Temperatures per year

Average over your travel period

Precipitation & rain days

Year by year

2025
Avg. max-1.4°Avg. min-8.9°
Rain days
9 Rain days
Precipitation
23.3 mm
Avg. cloud cover
75 % cloudy
Sea temperature
–
Max 1.8 °C · Min -21.5 °C
2024
Avg. max-2.4°Avg. min-10.7°
Rain days
11 Rain days
Precipitation
40.3 mm
Avg. cloud cover
76 % cloudy
Sea temperature
–
Max 2.4 °C · Min -19.0 °C
2023
Avg. max-2.2°Avg. min-11.0°
Rain days
13 Rain days
Precipitation
124 mm
Avg. cloud cover
83 % cloudy
Sea temperature
–
Max 3.8 °C · Min -23.1 °C
2022
Avg. max-3.1°Avg. min-11.5°
Rain days
12 Rain days
Precipitation
54.0 mm
Avg. cloud cover
82 % cloudy
Sea temperature
–
Max 0.6 °C · Min -25.1 °C
2021
Avg. max-3.3°Avg. min-11.8°
Rain days
12 Rain days
Precipitation
48.9 mm
Avg. cloud cover
70 % cloudy
Sea temperature
–
Max 2.9 °C · Min -19.0 °C
2020
Avg. max-4.3°Avg. min-11.4°
Rain days
15 Rain days
Precipitation
134 mm
Avg. cloud cover
83 % cloudy
Sea temperature
–
Max 0.6 °C · Min -22.6 °C
2019
Avg. max-2.7°Avg. min-11.6°
Rain days
19 Rain days
Precipitation
89.4 mm
Avg. cloud cover
74 % cloudy
Sea temperature
–
Max 0.0 °C · Min -19.7 °C
2018
Avg. max-3.6°Avg. min-12.3°
Rain days
17 Rain days
Precipitation
76.8 mm
Avg. cloud cover
74 % cloudy
Sea temperature
–
Max 1.8 °C · Min -21.6 °C
2017
Avg. max-5.4°Avg. min-15.2°
Rain days
13 Rain days
Precipitation
108 mm
Avg. cloud cover
73 % cloudy
Sea temperature
–
Max 1.4 °C · Min -21.6 °C
2016
Avg. max-1.0°Avg. min-9.6°
Rain days
1 Rain days
Precipitation
3.6 mm
Avg. cloud cover
56 % cloudy
Sea temperature
–
Max 4.2 °C · Min -14.0 °C

Frequently asked questions

How warm is it in St. Moritz in December?: Daytime highs averaged -2.9 °C, night-time lows -11.4 °C. The highest value of the past 10 years was 4.2 °C (10 Dec 2016), the lowest -25.1 °C (11 Dec 2022).
How often does it rain in St. Moritz in December?: On average there were 12.2 rain days (at least 1 mm) with 70.2 mm of precipitation in total.

Check your exact travel dates

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Data sources

Weather data: Data obtained from the NASA Langley Research Center (LaRC) POWER Project funded through the NASA Earth Science/Applied Science Program
Reanalysis (weather model constrained by observations) on a coarse grid of about 50 km. Values represent a large area and can differ from local conditions, especially on islands, coasts and in mountains. No sunshine duration.
Reanalysis (weather model constrained by observations)
Reanalysis values represent a grid cell (approx. 25–50 km) and may differ from local measurements on coasts, islands and in mountains.
Sea temperature: MUR SST data were provided by JPL under support by NASA MEaSUREs program; accessed via NOAA CoastWatch ERDDAP
Daily multi-scale ultra-high resolution (≈ 1 km) analysis of satellite measurements (infrared, microwave) and in-situ data. Represents the foundation temperature below the daily warm surface layer. (Satellite and in-situ analysis)
Place search: Natural Earth (public domain) · GeoNames (CC BY 4.0) / OpenStreetMap (ODbL)