St. Moritz weather in December

In December, St. Moritz sees average daytime highs of -6°C and overnight lows near -13°C, with 83 mm of precipitation across 12.2 wet days and about 8.4 hours of daylight. It is the 11th-warmest and 9th-wettest month of the year here.

Highs ease over the month, from about -4°C in the first days to -7°C by the end. The sky is clear or mostly clear about 24% of the time in December, and the air most often feels dry.

Daylight stretches from about 8 h 42 min at the start of December to 8 h 24 min by month's end. Set against the rest of the year, December is St. Moritz's 8th-clearest and 6th-windiest month. For the whole year in context, see St. Moritz's year-round climate.

Daytime high
-6°
11th warmest
Overnight low
-13°
3rd coldest
Precipitation
83 mm
12.2 wet days
Daylight
8 h 24 min
8:05 AM – 4:29 PM
Cloud cover
66%
8th clearest
Wind
6 km/h
6th windiest
Solar energy
1.49 kWh/m²
Travel score
0.0
out of 10

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about -4°C in the first days to -7°C by the end.

A typical December day in St. Moritz reaches about -6°C in the afternoon and slips back to -13°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between -12°C and -1°C. Set against its neighbours, December runs about 5°C cooler than November and about 1°C warmer than January.

-20°-10°151015202531
Avg high (°C)Avg low (°C)
1-4-11
2-4-11
3-4-11
4-4-12
5-4-12
6-5-12
7-5-12
8-5-12
9-5-13
10-5-13
11-5-13
12-5-13
13-5-13
14-6-13
15-6-13
16-6-14
17-6-14
18-6-14
19-6-14
20-6-14
21-6-14
22-6-14
23-6-14
24-6-14
25-7-14
26-7-14
27-7-14
28-7-14
29-7-14
30-7-14
31-7-14

How December really feels in St. Moritz

Once humidity and wind are folded in, December averages 0 days that feel above 32°C and 31 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
31
31 feel bitter (≤ -10°C)

The story in December is cold — wind chill drags the overnight "feels like" below the raw low.

St. Moritz weather by month

How December compares with the rest of the year at a glance. December is the 11th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-7° / -15°751112.68.80.0
Feb-5° / -14°6110.411.6100.0
Mar-1° / -10°741213.711.60.0
Apr / -5°10614.714.113.30.0
May / -1°13318.510.614.80.7
Jun12° / 15619.13.715.52.6
Jul14° / 15819.41.215.23.4
Aug14° / 16118.21.4143.3
Sep10° / 10813.44.112.42.0
Oct / -2°11911.98.110.70.4
Nov-1° / -8°14313.714.19.20.0
Dec-6° / -13°8312.213.48.40.0

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 24% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 12% of December, with mostly cloudy or overcast conditions the remaining 64%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13367
23367
33367
43466
53466
63664
73664
83664
93664
103664
113763
123763
133664
143664
153664
163664
173763
183763
193664
203664
213664
223664
233664
243763
253763
263763
273862
283862
293862
303961
313961

Chance of precipitation in December

Any precipitationSnow

St. Moritz gets around 83 mm of rain and snow over 12.2 wet days in December. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 40% and peaks near 41% on the wettest days, and about 13 days bring snow.

0%20%40%60%151015202531
Rain chance (%)Snow chance (%)
14145
24144
34044
44043
53943
63943
73943
83942
93842
103842
113842
123843
133843
143943
153943
163943
173944
183944
193944
203944
213944
224044
234044
244044
254044
264144
274144
284144
294144
304144
314144

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

Most of December feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, December lands in the dry band about 100% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)
1100
2100
3100
4100
5100
6100
7100
8100
9100
10100
11100
12100
13100
14100
15100
16100
17100
18100
19100
20100
21100
22100
23100
24100
25100
26100
27100
28100
29100
30100
31100

Wind in December

Winds average 6 km/h in December.

Across December, daily wind ranges from about 5 km/h on the calmest days to 6 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 8 h 42 min at the start of December to 8 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 18 minutes over December. Sunrise moves from 7:51 AM to 8:11 AM, and sunset from 4:30 PM to 4:37 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
18.77:514:30
28.67:524:30
38.67:534:29
48.67:544:29
58.67:554:29
68.57:564:29
78.57:574:28
88.57:584:28
98.57:594:28
108.58:004:28
118.58:014:28
128.48:024:28
138.48:034:28
148.48:034:28
158.48:044:29
168.48:054:29
178.48:064:29
188.48:064:29
198.48:074:30
208.48:074:30
218.48:084:30
228.48:084:31
238.48:094:31
248.48:094:32
258.48:104:32
268.48:104:33
278.48:104:34
288.48:104:34
298.48:114:35
308.48:114:36
318.48:114:37

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 1.49 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 1.49 kWh/m² to a high of 5.98 kWh/m² in May across the year — December's 1.49 kWh/m² sits near the bottom.

00.511.522.5151015202531
Solar energy (kWh/m²)Level
11.6Dim
21.6Dim
31.6Dim
41.6Dim
51.6Dim
61.6Dim
71.5Dim
81.5Dim
91.5Dim
101.5Dim
111.5Dim
121.5Dim
131.5Dim
141.5Dim
151.5Dim
161.5Dim
171.5Dim
181.5Dim
191.5Dim
201.5Dim
211.5Dim
221.5Dim
231.5Dim
241.5Dim
251.5Dim
261.5Dim
271.5Dim
281.5Dim
291.5Dim
301.5Dim
311.5Dim
Planning a trip in December

Is December a good time to visit St. Moritz?

Our two travel scores rate December for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

0.0
Sightseeing
7th-best month of the year
Beach & pool
never really warm enough

December is a weaker month for outdoor sightseeing in St. Moritz.

What to pack for St. Moritz in December

From December's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In December, St. Moritz sees daytime highs around -6°C and nights near -13°C. Pack a warm layer and a heavy coat. Worth having: rain gear. About 12 days see rain.

a warm layera heavy coatrain gear

UV index in St. Moritz in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 1. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in St. Moritz peaks around July 15 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 9 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJul 15UV 9Dec 22UV 1
UV index (midday)Level
Jan1Low
Feb3Moderate
Mar6High
Apr8Very high
May9Very high
Jun9Very high
Jul10Very high
Aug8Very high
Sep6High
Oct4Moderate
Nov2Low
Dec1Low
Location & terrain

Where is St. Moritz?

St. Moritz sits at 46.5°N, 9.8°E, 0 m above sea level, in Switzerland. The nearest listed city is Davos, 34 km away.

DavosSondrioChurBellinzonaBludenzVaduzLeccoFeldkirch

Topography around St. Moritz

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of St. Moritz.

Within 3 km, the terrain around St. Moritz has large variations in elevation — a maximum elevation change of 1,149 m around an average of 2,048 m above sea level; within 16 km, extreme variations in elevation — a maximum elevation change of 2,603 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,753 m.

The land around St. Moritz is covered by trees (43%) and grassland (43%) within 3 km, grassland (37%) and bare terrain (21%) within 16 km, and trees (43%) and grassland (35%) within 80 km.

3 km
1,149 m
16 km
2,603 m
80 km
3,753 m
treesgrasslandartificial surfacesbare terrainsnow and icewatermoss and lichen
December weather nearby: Davos 34 km · Sondrio 37 km · Chur 46 km · Bellinzona 72 km · Bludenz 73 km · Vaduz 75 km · Lecco 79 km · Feldkirch 84 km

Switzerland travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type C / J
230 V · 50 Hz
Prices
≈ 112% of US
price level, 2025
GDP per capita
$114,769
2025
Happiness
7.0 / 10
World Happiness, 2025
Safe drinking water
97%
of population, 2024
Homicide rate
0.6
per 100k, 2023
Road deaths
2.2
per 100k/yr, 2019
Income group
High
World Bank
English
High
EF EPI 564
Religion
Roman Catholic 34%none 29%Protestant 23%other Christian 6%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for St. Moritz (46.4994°, 9.8433°, elevation 0 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).