Sierre weather in December

In December, Sierre sees average daytime highs of -4°C and overnight lows near -13°C, with 125 mm of precipitation across 13.1 wet days and about 8.5 hours of daylight. It is the 11th-warmest and 4th-wettest month of the year here.

Highs ease over the month, from about -3°C in the first days to -5°C by the end. The sky is clear or mostly clear about 30% 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 30 min by month's end. Set against the rest of the year, December is Sierre's 8th-clearest and 1st-windiest month. For the whole year in context, see Sierre's year-round climate.

Daytime high
-4°
11th warmest
Overnight low
-13°
2nd coldest
Precipitation
125 mm
13.1 wet days
Daylight
8 h 24 min
8:13 AM – 4:39 PM
Cloud cover
61%
8th clearest
Wind
5 km/h
1st windiest
Solar energy
1.38 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 -3°C in the first days to -5°C by the end.

A typical December day in Sierre reaches about -4°C in the afternoon and slips back to -13°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between -11°C and 2°C. Set against its neighbours, December runs about 6°C cooler than November and about 1°C warmer than January.

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

How December really feels in Sierre

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.

Sierre weather by month

How December compares with the rest of the year at a glance. December is the 11th-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-5° / -14°11812.213.18.80.0
Feb-2° / -12°9811.411.8100.0
Mar / -7°10113.113.111.60.0
Apr / -3°10613.510.913.30.4
May11° / 13816.46.214.72.1
Jun15° / 13116.71.515.53.9
Jul17° / 12716.10.815.25.0
Aug17° / 11913.80.7145.2
Sep13° / 10612.82.412.33.6
Oct / -1°10212.36.210.71.6
Nov / -8°12213.111.69.20.0
Dec-4° / -13°12513.1148.50.0

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 30% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 11% of December, with mostly cloudy or overcast conditions the remaining 58%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14159
24159
34159
44258
54258
64258
74258
84357
94357
104258
114258
124258
134258
144258
154159
164159
174159
184258
194159
204159
214159
224159
234159
244159
254258
264258
274258
284258
294258
304258
314357

Chance of precipitation in December

Any precipitationSnow

Sierre gets around 125 mm of rain and snow over 13.1 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 42% and peaks near 44% on the wettest days, and about 14 days bring snow.

0%20%40%60%151015202531
Rain chance (%)Snow chance (%)
14042
24142
34143
44143
54144
64144
74144
84145
94145
104145
114146
124246
134246
144246
154246
164246
174246
184246
194246
204246
214346
224346
234346
244446
254446
264446
274446
284446
294446
304445
314445

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 5 km/h in December, the windiest month of the year.

Across December, daily wind ranges from about 5 km/h on the calmest days to 5 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
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm
315calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 8 h 42 min at the start of December to 8 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 12 minutes over December. Sunrise moves from 7:59 AM to 8:19 AM, and sunset from 4:40 PM to 4:47 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
18.77:594:40
28.78:004:40
38.68:014:39
48.68:034:39
58.68:044:39
68.68:054:39
78.58:064:38
88.58:074:38
98.58:084:38
108.58:084:38
118.58:094:38
128.58:104:38
138.58:114:38
148.48:124:38
158.48:134:39
168.48:134:39
178.48:144:39
188.48:154:39
198.48:154:40
208.48:164:40
218.48:164:40
228.48:174:41
238.48:174:41
248.48:184:42
258.48:184:43
268.48:184:43
278.48:194:44
288.48:194:44
298.48:194:45
308.48:194:46
318.58:194:47

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 1.38 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 1.38 kWh/m² to a high of 6 kWh/m² in June across the year — December's 1.38 kWh/m² sits near the bottom.

00.511.522.5151015202531
Solar energy (kWh/m²)Level
11.5Dim
21.5Dim
31.5Dim
41.5Dim
51.5Dim
61.4Dim
71.4Dim
81.4Dim
91.4Dim
101.4Dim
111.4Dim
121.4Dim
131.4Dim
141.4Dim
151.4Dim
161.4Dim
171.4Dim
181.4Dim
191.4Dim
201.4Dim
211.4Dim
221.4Dim
231.4Dim
241.4Dim
251.4Dim
261.4Dim
271.4Dim
281.4Dim
291.4Dim
301.4Dim
311.4Dim
Planning a trip in December

Is December a good time to visit Sierre?

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

0.0
Sightseeing
8th-best month of the year
0.0
Beach & pool
6th-best month of the year

December is a weaker month for outdoor sightseeing in Sierre.

What to pack for Sierre in December

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

In December, Sierre sees daytime highs around -4°C and nights near -13°C. Pack a warm layer and a heavy coat. Worth having: rain gear. About 13 days see rain.

a warm layera heavy coatrain gear

UV index in Sierre 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 Sierre peaks around July 16 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 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJul 16UV 9Dec 22UV 1
UV index (midday)Level
Jan1Low
Feb3Moderate
Mar5High
Apr7High
May8Very high
Jun8Very high
Jul9Very high
Aug8Very high
Sep6High
Oct4Moderate
Nov2Low
Dec1Low
Location & terrain

Where is Sierre?

Sierre sits at 46.3°N, 7.5°E, 528 m above sea level, in Switzerland. The nearest listed city is Sitten, 16 km away.

ZermattMartigny-VilleLauterbrunnenMontheyMontreuxInterlakenThun

Topography around Sierre

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

Within 3 km, the terrain around Sierre has large variations in elevation — a maximum elevation change of 1,154 m around an average of 747 m above sea level; within 16 km, extreme variations in elevation — a maximum elevation change of 2,920 m; within 80 km, extreme variations in elevation — a maximum elevation change of 4,591 m.

The land around Sierre is covered by trees (62%) and artificial surfaces (20%) within 3 km, trees (40%) and grassland (33%) within 16 km, and trees (40%) and grassland (35%) within 80 km.

3 km
1,154 m
16 km
2,920 m
80 km
4,591 m
treesgrasslandcroplandartificial surfacesbare terrainsnow and icewatermoss and lichen
December weather nearby: Sitten 16 km · Zermatt 34 km · Martigny-Ville 41 km · Lauterbrunnen 44 km · Monthey 45 km · Montreux 50 km · Interlaken 50 km · Thun 51 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 Sierre (46.2919°, 7.5356°, elevation 528 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).