Tønder weather in December

In December, Tønder sees average daytime highs of 5°C and overnight lows near 2°C, with 77 mm of precipitation across 14 wet days and about 7 hours of daylight. It is the 10th-warmest and 5th-wettest month of the year here.

Highs ease over the month, from about 6°C in the first days to 4°C by the end. The sky is clear or mostly clear about 11% of the time in December, and the air most often feels dry.

Daylight stretches from about 7 h 18 min at the start of December to 7 hours by month's end. Set against the rest of the year, December is Tønder's 12th-clearest and 2nd-windiest month. For the whole year in context, see Tønder's year-round climate.

Daytime high
10th warmest
Overnight low
4th coldest
Precipitation
77 mm
14 wet days
Daylight
6 h 54 min
8:52 AM – 3:49 PM
Cloud cover
78%
12th clearest
Wind
21 km/h
2nd windiest
Solar energy
0.4 kWh/m²
Travel score
0.1
out of 10

Tønder is town in Denmark.

Density
2,415/km²
people per km²
Founded
1017

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

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 6°C in the first days to 4°C by the end.

A typical December day in Tønder reaches about 5°C in the afternoon and slips back to 2°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between 0°C and 9°C. Set against its neighbours, December runs about 3°C cooler than November and about 1°C warmer than January.

-10°-5°10°151015202531
Avg high (°C)Avg low (°C)
163
263
363
463
563
663
763
863
963
1063
1153
1252
1352
1452
1552
1652
1752
1852
1952
2052
2152
2252
2352
2452
2552
2651
2751
2841
2941
3041
3141

How December really feels in Tønder

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.

Tønder weather by month

How December compares with the rest of the year at a glance. December is the 10th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 7313.92.77.60.0
Feb / 5611.12.79.30.0
Mar / 5511.2211.40.5
Apr10° / 429.60.313.82.4
May14° / 5110.4015.84.2
Jun17° / 12°7111.20175.2
Jul19° / 14°7812.6016.55.8
Aug20° / 14°9114014.75.7
Sep17° / 12°8413.1012.54.7
Oct12° / 8914.2010.22.9
Nov / 7713.90.48.11.2
Dec / 77141.770.1

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 11% of the time in December, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 12% of December, with mostly cloudy or overcast conditions the remaining 77%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12179
22179
32179
42179
52179
62179
72278
82278
92278
102278
112377
122377
132377
142476
152476
162476
172476
182476
192476
202377
212377
222377
232377
242377
252476
262476
272476
282476
292476
302575
312575

Chance of precipitation in December

Any precipitationSnow

Tønder gets around 77 mm of rain and snow over 14 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 45% and peaks near 47% on the wettest days, and about 2 days bring snow.

0%20%40%60%151015202531
Rain chance (%)Snow chance (%)
1434
2434
3444
4444
5444
6454
7455
8465
9465
10465
11455
12455
13455
14445
15445
16445
17445
18445
19445
20445
21456
22456
23456
24456
25456
26457
27467
28467
29467
30477
31477

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 21 km/h in December.

Across December, daily wind ranges from about 21 km/h on the calmest days to 22 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202531
Wind speed (km/h)Feels
121breezy
221breezy
321breezy
421breezy
521breezy
621breezy
721breezy
821breezy
921breezy
1021breezy
1121breezy
1221breezy
1321breezy
1421breezy
1521breezy
1621breezy
1721breezy
1821breezy
1921breezy
2021breezy
2122breezy
2222breezy
2322breezy
2422breezy
2522breezy
2622breezy
2722breezy
2822breezy
2922breezy
3022breezy
3122breezy

Sunrise & sunset in December

DaylightNight

Daylight runs from about 7 h 18 min at the start of December to 7 hours by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 18 minutes over December. Sunrise moves from 8:34 AM to 8:58 AM, and sunset from 3:54 PM to 3:58 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
17.38:343:54
27.38:363:54
37.38:373:53
47.28:393:52
57.28:403:52
67.28:413:51
77.18:433:51
87.18:443:50
97.18:453:50
107.18:463:50
117.08:473:49
127.08:483:49
137.08:503:49
147.08:503:49
157.08:513:49
166.98:523:49
176.98:533:49
186.98:543:50
196.98:543:50
206.98:553:50
216.98:563:50
226.98:563:51
236.98:573:51
246.98:573:52
256.98:573:53
266.98:573:53
276.98:583:54
286.98:583:55
297.08:583:56
307.08:583:57
317.08:583:58

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 0.4 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 0.4 kWh/m² to a high of 5.64 kWh/m² in June across the year — December's 0.4 kWh/m² sits near the bottom.

00.511.52151015202531
Solar energy (kWh/m²)Level
10.5Dim
20.5Dim
30.5Dim
40.5Dim
50.5Dim
60.4Dim
70.4Dim
80.4Dim
90.4Dim
100.4Dim
110.4Dim
120.4Dim
130.4Dim
140.4Dim
150.4Dim
160.4Dim
170.4Dim
180.4Dim
190.4Dim
200.4Dim
210.4Dim
220.4Dim
230.4Dim
240.4Dim
250.4Dim
260.4Dim
270.4Dim
280.4Dim
290.4Dim
300.4Dim
310.4Dim
Planning a trip in December

Is December a good time to visit Tønder?

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
7th-best month of the year

December is a weaker month for outdoor sightseeing in Tønder.

What to pack for Tønder in December

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

In December, Tønder sees daytime highs around 5°C and nights near 2°C. Pack a warm layer and rain gear. Worth having: a heavy coat and a windbreaker. About 14 days see rain.

a warm layerrain geara heavy coata windbreaker

Sea temperature near Tønder in December

The nearest coast averages about 5°C in December — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 17 km away) is warmest in August at about 19°C and coldest in February near 3°C.

The water stays below 20°C all year — cool enough that most swimmers want a wetsuit.

0°10°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshing
Sea temperature (°C)Comfort
Jan4Bracing
Feb3Bracing
Mar4Bracing
Apr7Bracing
May11Bracing
Jun15Bracing
Jul18Cool
Aug19Cool
Sep16Cool
Oct12Bracing
Nov9Bracing
Dec5Bracing

UV index in Tønder in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 0. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Tønder peaks around July 21 at about 5 (high) — a little sun protection helps at midday. It bottoms out near January 1 at about 0 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 6 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateLowJul 21UV 5Jan 1UV 0
UV index (midday)Level
Jan0Low
Feb1Low
Mar2Moderate
Apr3Moderate
May5High
Jun5High
Jul6High
Aug5High
Sep4Moderate
Oct2Low
Nov1Low
Dec0Low
Location & terrain

Where is Tønder?

Tønder sits at 54.9°N, 8.9°E, 3 m above sea level, in Denmark. The nearest listed city is Aabenraa, 37 km away.

AabenraaFlensburgHusumHaderslevSønderborgSchleswigEsbjergKolding

Topography around Tønder

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

Within 3 km, the terrain around Tønder has only modest variations in elevation — a maximum elevation change of 16 m around an average of 2 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 50 m; within 80 km, only modest variations in elevation — a maximum elevation change of 123 m.

The land around Tønder is covered by cropland (43%) and grassland (37%) within 3 km, cropland (50%) and grassland (34%) within 16 km, and water (40%), cropland (29%) and grassland (20%) within 80 km.

3 km
16 m
16 km
50 m
80 km
123 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
December weather nearby: Aabenraa 37 km · Flensburg 40 km · Husum 51 km · Haderslev 53 km · Sønderborg 59 km · Schleswig 64 km · Esbjerg 65 km · Kolding 73 km

Denmark travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / E / F / K
230 V · 50 Hz
Prices
≈ 92% of US
price level, 2025
GDP per capita
$76,970
2025
Happiness
7.5 / 10
World Happiness, 2025
Safe drinking water
100%
of population, 2024
Homicide rate
0.8
per 100k, 2023
Road deaths
3.7
per 100k/yr, 2019
Income group
High
World Bank
English
Very high
EF EPI 611
Religion
Evangelical Lutheran 71%other/none/unspecified 24%Muslim 4%

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 Tønder (54.9331°, 8.8667°, elevation 3 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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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).