Tønsberg weather in December

In December, Tønsberg sees average daytime highs of 3°C and overnight lows near -1°C, with 86 mm of precipitation across 12.9 wet days and about 5.9 hours of daylight. It is the 10th-warmest and 5th-wettest month of the year here.

Highs ease over the month, from about 4°C in the first days to 2°C by the end. The sky is clear or mostly clear about 19% of the time in December, and the air most often feels dry.

Daylight stretches from about 6 h 18 min at the start of December to 5 h 54 min by month's end. Set against the rest of the year, December is Tønsberg's 11th-clearest and 2nd-windiest month. For the whole year in context, see Tønsberg's year-round climate.

Daytime high
10th warmest
Overnight low
-1°
3rd coldest
Precipitation
86 mm
12.9 wet days
Daylight
5 h 48 min
9:20 AM – 3:09 PM
Cloud cover
72%
11th clearest
Wind
17 km/h
2nd windiest
Solar energy
0.23 kWh/m²
Travel score
0.0
out of 10

Tønsberg is city in Vestfold county, Norway.

Air quality
Good
PM2.5 6.9 µg/m³ · 2019
Density
5,362/km²
people per km²

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 4°C in the first days to 2°C by the end.

A typical December day in Tønsberg reaches about 3°C in the afternoon and slips back to -1°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between -3°C and 8°C. Set against its neighbours, December runs about 3°C cooler than November and about 1°C warmer than January.

-15°-10°-5°10°151015202531
Avg high (°C)Avg low (°C)
141
241
341
441
541
641
740
830
930
1030
1130
1230
1330
1430
1530
163-1
173-1
182-1
192-1
202-1
212-1
222-1
232-1
242-1
252-2
262-2
272-2
282-2
292-2
302-2
312-2

How December really feels in Tønsberg

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.

Tønsberg 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 / -2°8212.57.86.60.0
Feb / -2°588.76.38.70.0
Mar / 568.64.511.30.2
Apr / 528.21.214.11.9
May14° / 669.50.216.64.2
Jun18° / 12°8210.4018.15.7
Jul20° / 15°8210.3017.56.3
Aug19° / 15°9112.4015.35.9
Sep16° / 11°10711.4012.64.6
Oct10° / 12012.90.79.82.2
Nov / 1151437.30.4
Dec / -1°8612.95.55.90.0

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 19% 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 71%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12674
22575
32674
42773
52773
62773
72872
82872
92872
102872
112971
122971
133070
143070
153169
163169
173169
183169
193070
203070
213070
223070
233070
243070
253070
263070
272971
282971
292971
302971
312872

Chance of precipitation in December

Any precipitationSnow

Tønsberg gets around 86 mm of rain and snow over 12.9 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 48% on the wettest days, and about 6 days bring snow. The odds ease toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)Snow chance (%)
14817
24717
34717
44717
54617
64617
74517
84517
94417
104316
114316
124216
134115
144015
154015
163915
173915
183915
193916
203917
213917
223918
233918
243919
253919
263920
274021
284022
294122
304123
314224

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 17 km/h in December.

Across December, daily wind ranges from about 17 km/h on the calmest days to 18 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
118light breeze
217light breeze
317light breeze
417light breeze
517light breeze
617light breeze
717light breeze
817light breeze
917light breeze
1017light breeze
1117light breeze
1217light breeze
1317light breeze
1417light breeze
1517light breeze
1617light breeze
1717light breeze
1817light breeze
1917light breeze
2017light breeze
2117light breeze
2217light breeze
2317light breeze
2417light breeze
2517light breeze
2617light breeze
2717light breeze
2817light breeze
2917light breeze
3017light breeze
3117light breeze

Sunrise & sunset in December

DaylightNight

Daylight runs from about 6 h 18 min at the start of December to 5 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 24 minutes over December. Sunrise moves from 8:59 AM to 9:26 AM, and sunset from 3:18 PM to 3:17 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
16.38:593:18
26.39:003:17
36.29:023:16
46.29:043:15
56.19:063:14
66.19:073:13
76.19:093:12
86.09:113:11
96.09:123:11
105.99:133:10
115.99:153:10
125.99:163:09
135.99:173:09
145.89:183:09
155.89:193:09
165.89:203:09
175.89:213:09
185.89:223:09
195.89:233:09
205.89:243:09
215.89:243:10
225.89:253:10
235.89:253:11
245.89:253:11
255.89:263:12
265.89:263:13
275.89:263:13
285.89:263:14
295.89:263:15
305.89:263:16
315.99:263:17

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 0.23 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 0.23 kWh/m² to a high of 5.75 kWh/m² in June across the year — December's 0.23 kWh/m² sits near the bottom.

00.511.52151015202531
Solar energy (kWh/m²)Level
10.3Dim
20.3Dim
30.3Dim
40.3Dim
50.3Dim
60.3Dim
70.2Dim
80.2Dim
90.2Dim
100.2Dim
110.2Dim
120.2Dim
130.2Dim
140.2Dim
150.2Dim
160.2Dim
170.2Dim
180.2Dim
190.2Dim
200.2Dim
210.2Dim
220.2Dim
230.2Dim
240.2Dim
250.2Dim
260.2Dim
270.2Dim
280.2Dim
290.2Dim
300.2Dim
310.2Dim
Planning a trip in December

Is December a good time to visit Tønsberg?

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
7th-best month of the year

December is a weaker month for outdoor sightseeing in Tønsberg.

What to pack for Tønsberg in December

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

In December, Tønsberg sees daytime highs around 3°C and nights near -1°C. Pack a warm layer and a heavy coat. Worth having: rain gear. About 13 days see rain.

a warm layera heavy coatrain gear

Sea temperature near Tønsberg in December

The nearest coast averages about 6°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 16 km away) is warmest in August at about 18°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°5°10°15°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshing
Sea temperature (°C)Comfort
Jan4Bracing
Feb3Bracing
Mar3Bracing
Apr6Bracing
May11Bracing
Jun15Bracing
Jul18Cool
Aug18Cool
Sep15Cool
Oct12Bracing
Nov9Bracing
Dec6Bracing

UV index in Tønsberg 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 Tønsberg peaks around July 17 at about 5 (moderate) — 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 4 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateLowJul 17UV 5Jan 1UV 0
UV index (midday)Level
Jan0Low
Feb1Low
Mar2Low
Apr3Moderate
May4Moderate
Jun5Moderate
Jul5Moderate
Aug5Moderate
Sep3Moderate
Oct1Low
Nov0Low
Dec0Low
Location & terrain

Where is Tønsberg?

Tønsberg sits at 59.3°N, 10.4°E, 16 m above sea level, in Norway. The nearest listed city is Horten, 17 km away.

Topography around Tønsberg

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

Within 3 km, the terrain around Tønsberg has only modest variations in elevation — a maximum elevation change of 101 m around an average of 22 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 222 m; within 80 km, large variations in elevation — a maximum elevation change of 907 m.

The land around Tønsberg is covered by trees (32%) and artificial surfaces (20%) within 3 km, water (38%) and trees (33%) within 16 km, and trees (58%) and water (30%) within 80 km.

3 km
101 m
16 km
222 m
80 km
907 m
treesgrasslandcroplandartificial surfaceswaterwetland
December weather nearby: Horten 17 km · Sandefjord 19 km · Moss 23 km · Fredrikstad 30 km · Larvik 32 km · Sarpsborg 40 km · Porsgrunn 45 km · Skien 46 km

Norway travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type C / F
230 V · 50 Hz
Prices
≈ 91% of US
price level, 2025
GDP per capita
$94,594
2025
Happiness
7.2 / 10
World Happiness, 2025
Safe drinking water
99%
of population, 2024
Homicide rate
0.7
per 100k, 2023
Road deaths
2.1
per 100k/yr, 2019
Income group
High
World Bank
English
Very high
EF EPI 613
Religion
Church of Norway 68%other Christian 4%Muslim 3%Roman Catholic 3%

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 Tønsberg (59.2675°, 10.4076°, elevation 16 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).