Nyon weather in December

In December, Nyon sees average daytime highs of 5°C and overnight lows near 1°C, with 141 mm of precipitation across 14.7 wet days and about 8.5 hours of daylight. It is the 11th-warmest and 1st-wettest month of the year here.

Day-to-day highs hold fairly steady near 5°C through the month. The sky is clear or mostly clear about 18% 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 Nyon's 11th-clearest and 3rd-windiest month. For the whole year in context, see Nyon's year-round climate.

Daytime high
11th warmest
Overnight low
3rd coldest
Precipitation
141 mm
14.7 wet days
Daylight
8 h 24 min
8:19 AM – 4:44 PM
Cloud cover
72%
11th clearest
Wind
8 km/h
3rd windiest
Solar energy
1.08 kWh/m²
Travel score
0.1
out of 10

Nyon is archaeological site in Nyon in the canton of Vaud, Suisse.

Air quality
Good
PM2.5 7.7 µg/m³ · 2020

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 5°C through the month.

A typical December day in Nyon reaches about 5°C in the afternoon and slips back to 1°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 1°C and 9°C. Set against its neighbours, December runs about 3°C cooler than November and on par with January.

-5°10°151015202531
Avg high (°C)Avg low (°C)
162
262
362
462
562
652
751
851
951
1051
1151
1251
1351
1451
1551
1651
1751
1851
1951
2051
2151
2251
2351
2441
2540
2640
2740
2840
2940
3040
3140

How December really feels in Nyon

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
wind chill below the day's low

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

Nyon weather by month

How December compares with the rest of the year at a glance. December is the 11th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -0°12213.48.48.80.0
Feb / 10312.18.3100.1
Mar / 11213.25.811.61.7
Apr13° / 10914.12.913.33.0
May16° / 13515.90.414.74.4
Jun20° / 13°12815.6015.55.5
Jul22° / 15°13715.6015.26.0
Aug22° / 15°13314.90146.1
Sep18° / 12°11813.2012.45.3
Oct14° / 12213.70.610.73.5
Nov / 130144.39.21.2
Dec / 14114.77.88.50.1

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 18% 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 70%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13070
22971
33070
43070
53070
63169
73169
83169
93169
103169
113268
123268
133268
143169
153169
163070
173070
183070
192971
203070
213070
223070
233070
243070
253070
263070
273070
283070
293070
303169
313169

Chance of precipitation in December

Any precipitationSnow

Nyon gets around 141 mm of rain and snow over 14.7 wet days in December, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 47% and peaks near 48% on the wettest days, and about 8 days bring snow.

0%20%40%60%151015202531
Rain chance (%)Snow chance (%)
14623
24624
34724
44724
54724
64724
74725
84725
94725
104725
114725
124725
134725
144725
154725
164724
174724
184724
194724
204725
214725
224725
234825
244826
254826
264826
274826
284827
294827
304827
314827

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 8 km/h in December.

Across December, daily wind ranges from about 8 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm
318calm

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 8:05 AM to 8:25 AM, and sunset from 4:45 PM to 4:51 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
18.78:054:45
28.68:064:44
38.68:074:44
48.68:084:44
58.68:094:44
68.68:104:43
78.58:114:43
88.58:124:43
98.58:134:43
108.58:144:43
118.58:154:43
128.58:164:43
138.48:174:43
148.48:174:43
158.48:184:43
168.48:194:44
178.48:194:44
188.48:204:44
198.48:214:45
208.48:214:45
218.48:224:45
228.48:224:46
238.48:234:46
248.48:234:47
258.48:244:47
268.48:244:48
278.48:244:49
288.48:244:49
298.48:254:50
308.48:254:51
318.48:254:51

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 1.08 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 1.08 kWh/m² to a high of 5.84 kWh/m² in July across the year — December's 1.08 kWh/m² sits near the bottom.

00.511.52151015202531
Solar energy (kWh/m²)Level
11.2Dim
21.2Dim
31.2Dim
41.2Dim
51.2Dim
61.1Dim
71.1Dim
81.1Dim
91.1Dim
101.1Dim
111.1Dim
121.1Dim
131.1Dim
141.1Dim
151.1Dim
161.1Dim
171.1Dim
181.1Dim
191.1Dim
201.1Dim
211.1Dim
221.1Dim
231.1Dim
241.1Dim
251.1Dim
261.1Dim
271.1Dim
281.1Dim
291.1Dim
301.1Dim
311.1Dim
Planning a trip in December

Is December a good time to visit Nyon?

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

0.1
Sightseeing
10th-best month of the year
0.0
Beach & pool
8th-best month of the year

December is a weaker month for outdoor sightseeing in Nyon.

What to pack for Nyon in December

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

In December, Nyon sees daytime highs around 5°C and nights near 1°C. Pack a warm layer and rain gear. Worth having: a heavy coat. About 15 days see rain.

a warm layerrain geara heavy coat

UV index in Nyon 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 Nyon 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
Apr5High
May7High
Jun7Very high
Jul9Very high
Aug7High
Sep5Moderate
Oct3Moderate
Nov2Low
Dec1Low
Location & terrain

Where is Nyon?

Nyon sits at 46.4°N, 6.2°E, 401 m above sea level, in Switzerland. The nearest listed city is Thonon-les-Bains, 18 km away.

MeyrinAnnemasseGenevaVernierLancyCarougeMorges

Topography around Nyon

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

Within 3 km, the terrain around Nyon has only modest variations in elevation — a maximum elevation change of 115 m around an average of 402 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,301 m; within 80 km, extreme variations in elevation — a maximum elevation change of 4,546 m.

The land around Nyon is covered by water (39%) and cropland (20%) within 3 km, trees (41%) and water (24%) within 16 km, and trees (53%) and grassland (31%) within 80 km.

3 km
115 m
16 km
1,301 m
80 km
4,546 m
treesgrasslandcroplandartificial surfacesbare terrainsnow and icewater
December weather nearby: Thonon-les-Bains 18 km · Meyrin 21 km · Annemasse 21 km · Geneva 21 km · Vernier 22 km · Lancy 24 km · Carouge 24 km · Morges 24 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 Nyon (46.3832°, 6.2396°, elevation 401 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).