Monthey weather in December

In December, Monthey sees average daytime highs of -1°C and overnight lows near -9°C, with 150 mm of precipitation across 13.2 wet days and about 8.5 hours of daylight. It is the 11th-warmest and 5th-wettest month of the year here.

Highs ease over the month, from about 0°C in the first days to -2°C by the end. The sky is clear or mostly clear about 31% 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 Monthey's 7th-clearest and 1st-windiest month. For the whole year in context, see Monthey's year-round climate.

Daytime high
-1°
11th warmest
Overnight low
-9°
2nd coldest
Precipitation
150 mm
13.2 wet days
Daylight
8 h 24 min
8:15 AM – 4:41 PM
Cloud cover
61%
7th clearest
Wind
6 km/h
1st windiest
Solar energy
1.28 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 0°C in the first days to -2°C by the end.

A typical December day in Monthey reaches about -1°C in the afternoon and slips back to -9°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between -6°C and 4°C. Set against its neighbours, December runs about 5°C cooler than November and on par with January.

-20°-10°10°151015202531
Avg high (°C)Avg low (°C)
11-8
21-8
30-8
40-8
50-8
60-9
70-9
80-9
90-9
10-1-9
11-1-9
12-1-9
13-1-9
14-1-9
15-1-9
16-1-9
17-1-9
18-1-9
19-1-10
20-1-10
21-1-10
22-1-10
23-1-10
24-2-10
25-2-10
26-2-10
27-2-10
28-2-10
29-2-10
30-2-10
31-2-10

How December really feels in Monthey

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.

Monthey weather by month

How December compares with the rest of the year at a glance. December is the 11th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-2° / -10°13312.812.58.80.0
Feb / -9°11711.611.4100.0
Mar / -5°12013.611.511.60.1
Apr / -1°123159.113.31.3
May13° / 19319.73.714.72.9
Jun17° / 20119.40.515.54.3
Jul19° / 20618.90.115.25.0
Aug19° / 19417.40.1145.1
Sep15° / 140151.312.34.0
Oct11° / 12013.4410.72.4
Nov / -5°12913.39.99.20.2
Dec-1° / -9°15013.212.58.50.0

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 31% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 10% of December, with mostly cloudy or overcast conditions the remaining 59%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14159
24159
34159
44159
54159
64159
74258
84258
94258
104258
114258
124258
134258
144258
154159
164159
174060
184060
194060
204060
213961
223961
233961
243961
254060
264060
274060
284060
294060
304060
314159

Chance of precipitation in December

Any precipitationSnow

Monthey gets around 150 mm of rain and snow over 13.2 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 43% and peaks near 45% on the wettest days, and about 13 days bring snow.

0%20%40%60%151015202531
Rain chance (%)Snow chance (%)
14137
24137
34138
44138
54139
64139
74239
84239
94240
104240
114240
124341
134341
144341
154341
164341
174341
184341
194341
204441
214442
224442
234442
244542
254543
264543
274543
284543
294543
304543
314443

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, the windiest month of the year.

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
85calm
95calm
105calm
115calm
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 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 8:01 AM to 8:22 AM, and sunset from 4:42 PM to 4:49 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
18.78:014:42
28.78:034:42
38.68:044:42
48.68:054:41
58.68:064:41
68.68:074:41
78.68:084:41
88.58:094:41
98.58:104:41
108.58:114:41
118.58:114:41
128.58:124:41
138.58:134:41
148.48:144:41
158.48:154:41
168.48:154:41
178.48:164:42
188.48:174:42
198.48:174:42
208.48:184:43
218.48:184:43
228.48:194:43
238.48:194:44
248.48:204:44
258.48:204:45
268.48:204:46
278.48:214:46
288.48:214:47
298.48:214:48
308.48:214:48
318.58:224:49

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 1.28 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 1.28 kWh/m² to a high of 5.84 kWh/m² in June across the year — December's 1.28 kWh/m² sits near the bottom.

00.511.52151015202531
Solar energy (kWh/m²)Level
11.4Dim
21.4Dim
31.4Dim
41.4Dim
51.4Dim
61.4Dim
71.3Dim
81.3Dim
91.3Dim
101.3Dim
111.3Dim
121.3Dim
131.3Dim
141.3Dim
151.3Dim
161.3Dim
171.3Dim
181.3Dim
191.3Dim
201.3Dim
211.3Dim
221.3Dim
231.3Dim
241.3Dim
251.3Dim
261.3Dim
271.3Dim
281.3Dim
291.3Dim
301.3Dim
311.3Dim
Planning a trip in December

Is December a good time to visit Monthey?

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

0.0
Sightseeing
10th-best month of the year
0.0
Beach & pool
6th-best month of the year

December is a weaker month for outdoor sightseeing in Monthey.

What to pack for Monthey in December

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

In December, Monthey sees daytime highs around -1°C and nights near -9°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 Monthey 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 Monthey 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 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJul 15UV 9Dec 22UV 1
UV index (midday)Level
Jan1Low
Feb2Moderate
Mar4Moderate
Apr5Moderate
May7High
Jun8Very high
Jul9Very high
Aug7High
Sep5High
Oct3Moderate
Nov2Low
Dec1Low
Location & terrain

Where is Monthey?

Monthey sits at 46.3°N, 7.0°E, 413 m above sea level, in Switzerland. The nearest listed city is Martigny-Ville, 19 km away.

Martigny-VilleMontreuxVeveySittenClusesPullyChamonixLausanne

Topography around Monthey

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

Within 3 km, the terrain around Monthey has large variations in elevation — a maximum elevation change of 1,057 m around an average of 593 m above sea level; within 16 km, extreme variations in elevation — a maximum elevation change of 2,844 m; within 80 km, extreme variations in elevation — a maximum elevation change of 4,464 m.

The land around Monthey is covered by trees (52%) within 3 km, trees (49%) and grassland (35%) within 16 km, and trees (40%) and grassland (33%) within 80 km.

3 km
1,057 m
16 km
2,844 m
80 km
4,464 m
treesgrasslandcroplandartificial surfacesbare terrainsnow and icewatermoss and lichen
December weather nearby: Martigny-Ville 19 km · Montreux 20 km · Vevey 25 km · Sitten 31 km · Cluses 36 km · Pully 36 km · Chamonix 37 km · Lausanne 38 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 Monthey (46.2545°, 6.9541°, elevation 413 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).