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December weather forecast in Trondheim

30 days Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

30 days Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Sun

Sunday

Mon

Monday

Tue

Tuesday

Wed

Wednesday

Thu

Thursday

Fri

Friday

Sat

Saturday

30 November, sun

	748 mmHg		79%
	4.19 m/s		+6

30 November, Sunday. day, 0°; night, -1°; snow

1 December, mon

	748 mmHg		79%
	4.69 m/s		+6

1 December, Monday. day, 1°; night, -2°; rain

2 December, tue

	749 mmHg		81%
	3.9 m/s		+6

2 December, Tuesday. day, 0°; night, -2°; clear

3 December, wed

	748 mmHg		80%
	4 m/s		+6

3 December, Wednesday. day, 0°; night, -3°; clear

4 December, thu

	747 mmHg		78%
	4.6 m/s		+6

4 December, Thursday. day, 1°; night, -2°; partly cloudy

5 December, fri

	746 mmHg		81%
	4.19 m/s		+6

5 December, Friday. day, 0°; night, -2°; rain

6 December, sat

	748 mmHg		82%
	3.7 m/s		+6

6 December, Saturday. day, 0°; night, -3°; clear

7 December, sun

	747 mmHg		81%
	4 m/s		+6

7 December, Sunday. day, 0°; night, -3°; partly cloudy

8 December, mon

	747 mmHg		81%
	3.9 m/s		+6

8 December, Monday. day, 0°; night, -3°; partly cloudy

9 December, tue

	748 mmHg		82%
	3.7 m/s		+6

9 December, Tuesday. day, 0°; night, -3°; partly cloudy

10 December, wed

	749 mmHg		83%
	3.6 m/s		+6

10 December, Wednesday. day, 0°; night, -3°; rain

11 December, thu

	750 mmHg		83%
	3.7 m/s		+6

11 December, Thursday. day, 1°; night, -2°; partly cloudy

12 December, fri

	752 mmHg		84%
	3.8 m/s		+5

12 December, Friday. day, 0°; night, -3°; rain

13 December, sat

	750 mmHg		83%
	3.6 m/s		+5

13 December, Saturday. day, 0°; night, -3°; clear

14 December, sun

	749 mmHg		82%
	3.9 m/s		+5

14 December, Sunday. day, 0°; night, -3°; rain

15 December, mon

	749 mmHg		83%
	4.5 m/s		+5

15 December, Monday. day, 1°; night, -2°; rain

16 December, tue

	749 mmHg		83%
	4.19 m/s		+5

16 December, Tuesday. day, 1°; night, -1°; rain

17 December, wed

	749 mmHg		84%
	4.1 m/s		+5

17 December, Wednesday. day, 0°; night, -2°; rain

18 December, thu

	749 mmHg		85%
	4.4 m/s		+5

18 December, Thursday. day, 1°; night, -3°; rain

19 December, fri

	747 mmHg		83%
	4.69 m/s		+5

19 December, Friday. day, 1°; night, -2°; rain

20 December, sat

	748 mmHg		83%
	4.1 m/s		+5

20 December, Saturday. day, 0°; night, -2°; rain

21 December, sun

	747 mmHg		80%
	3.8 m/s		+5

21 December, Sunday. day, 0°; night, -4°; overcast

22 December, mon

	746 mmHg		82%
	3.6 m/s		+5

22 December, Monday. day, 0°; night, -4°; snow

23 December, tue

	745 mmHg		83%
	4.1 m/s		+5

23 December, Tuesday. day, 0°; night, -4°; snow

24 December, wed

	744 mmHg		79%
	4.3 m/s		+5

24 December, Wednesday. day, 0°; night, -4°; rain

25 December, thu

	744 mmHg		82%
	4.4 m/s		+5

25 December, Thursday. day, 0°; night, -4°; snow

26 December, fri

	745 mmHg		81%
	4.6 m/s		+5

26 December, Friday. day, 0°; night, -3°; rain

27 December, sat

	746 mmHg		80%
	4.69 m/s		+5

27 December, Saturday. day, 0°; night, -4°; partly cloudy

28 December, sun

	747 mmHg		80%
	4.19 m/s		+5

28 December, Sunday. day, 0°; night, -4°; overcast

29 December, mon

	746 mmHg		81%
	4.1 m/s		+5

29 December, Monday. day, 0°; night, -4°; partly cloudy

30 December, tue

	747 mmHg		81%
	4.4 m/s		+5

30 December, Tuesday. day, 0°; night, -4°; partly cloudy

31 December, wed

	747 mmHg		80%
	4.69 m/s		+5

31 December, Wednesday. day, 0°; night, -5°; snow

1 January, thu

	747 mmHg		79%
	4.5 m/s		+5

1 January, Thursday. day, 0°; night, -4°; partly cloudy

2 January, fri

	749 mmHg		78%
	4.3 m/s		+5

2 January, Friday. day, -1°; night, -4°; clear

3 January, sat

	748 mmHg		79%
	4.69 m/s		+5

3 January, Saturday. day, 0°; night, -4°; clear

Average data for 10 years

Trondheim December

4

sunny days

17

days with precipitation

16

cloudy days

4 sunny days; 17 days with precipitation; 16 cloudy days;

82

%

air humidity

2.9

m/s

WindS

112

mm of precipitation

(9% of annual average)

+5

°C

Water temperature

air humidity 82%; 112 millimeters of precipitation (9% of annual average); Wind southerly 2.9 Meters per second; Water temperature +5°

Weather graphs for December

TemperatureWater temperaturePrecipitation chance, %Humidity, %Wind, m/sPressure, mmHg

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S

S

S

S

S

S

SE

S

S

S

S

S

S

S

S

S

S

S

S

S

S

S

S

S

S

S

S

S

S

S

1

Average data for 10 years

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

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28

29

30

31

Daytime temperature

Night-time temperature

Cities near you

Oslo
Lillehammer
Are
Drammen
Geiranger
Molde
Geilo
Rjukan
Gjovik

Cities with similar weather in December

Helsinki
Riga
Tallinn
Stockholm
Oslo
Yurmala
Toronto
Aktau
Palanga

The weather forecast for December 2025 is based on historical data from the past 10 years.

In December, the weather in Trondheim is typically freezing. Average daily high temperature in December is about zero. On average, Trondheim has 10 partly cloudy, 7 cloudy, 6 rainy, 4 snowy, and 4 sunny days in December. The rains are usually heavy. December as well as January, February, March, and April is considered the most uncomfortable time to visit Trondheim.

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