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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

29 November, sun

	731 mmHg		80%
	6 m/s		+6

29 November, Sunday. day, -1°; night, -1°; clear

30 November, mon

	732 mmHg		80%
	7.5 m/s		+6

30 November, Monday. day, 1°; night, -1°; rain

1 December, tue

	732 mmHg		82%
	6 m/s		+6

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

2 December, wed

	730 mmHg		77%
	6.9 m/s		+6

2 December, Wednesday. day, 0°; night, -1°; clear

3 December, thu

	728 mmHg		83%
	6.6 m/s		+6

3 December, Thursday. day, 0°; night, -2°; snow

4 December, fri

	724 mmHg		86%
	7 m/s		+6

4 December, Friday. day, 0°; night, -1°; snow

5 December, sat

	725 mmHg		83%
	8.1 m/s		+6

5 December, Saturday. day, 0°; night, -1°; snow

6 December, sun

	728 mmHg		87%
	6.9 m/s		+6

6 December, Sunday. day, 0°; night, -1°; snow

7 December, mon

	728 mmHg		87%
	5.9 m/s		+6

7 December, Monday. day, 0°; night, -2°; snow

8 December, tue

	728 mmHg		87%
	6.5 m/s		+6

8 December, Tuesday. day, 0°; night, -1°; snow

9 December, wed

	727 mmHg		87%
	5.5 m/s		+6

9 December, Wednesday. day, 1°; night, -1°; overcast

10 December, thu

	730 mmHg		87%
	4.5 m/s		+6

10 December, Thursday. day, 1°; night, -1°; overcast

11 December, fri

	732 mmHg		88%
	6.4 m/s		+6

11 December, Friday. day, 0°; night, -2°; snow

12 December, sat

	732 mmHg		87%
	5.6 m/s		+5

12 December, Saturday. day, -1°; night, -1°; snow

13 December, sun

	730 mmHg		87%
	5.8 m/s		+5

13 December, Sunday. day, 0°; night, -2°; snow

14 December, mon

	732 mmHg		87%
	5.5 m/s		+5

14 December, Monday. day, 1°; night, -1°; partly cloudy

15 December, tue

	729 mmHg		83%
	5.9 m/s		+5

15 December, Tuesday. day, 0°; night, -1°; overcast

16 December, wed

	731 mmHg		83%
	5 m/s		+5

16 December, Wednesday. day, -1°; night, -2°; clear

17 December, thu

	731 mmHg		86%
	5.6 m/s		+5

17 December, Thursday. day, 1°; night, -2°; rain

18 December, fri

	728 mmHg		86%
	6.3 m/s		+5

18 December, Friday. day, 2°; night, -1°; clear

19 December, sat

	730 mmHg		88%
	5 m/s		+5

19 December, Saturday. day, 1°; night, 0°; rain

20 December, sun

	728 mmHg		86%
	6.5 m/s		+5

20 December, Sunday. day, 0°; night, -2°; snow

21 December, mon

	726 mmHg		87%
	6.1 m/s		+5

21 December, Monday. day, -1°; night, -2°; snow

22 December, tue

	726 mmHg		85%
	7.1 m/s		+5

22 December, Tuesday. day, 0°; night, -1°; snow

23 December, wed

	729 mmHg		82%
	7.8 m/s		+5

23 December, Wednesday. day, -2°; night, -2°; snow

24 December, thu

	726 mmHg		81%
	7.8 m/s		+5

24 December, Thursday. day, -1°; night, -3°; snow

25 December, fri

	729 mmHg		85%
	7.8 m/s		+5

25 December, Friday. day, -1°; night, -1°; snow

26 December, sat

	728 mmHg		81%
	7.1 m/s		+5

26 December, Saturday. day, -2°; night, -2°; overcast

27 December, sun

	732 mmHg		86%
	7.1 m/s		+5

27 December, Sunday. day, -1°; night, -2°; snow

28 December, mon

	734 mmHg		87%
	6.8 m/s		+5

28 December, Monday. day, 0°; night, -2°; snow

29 December, tue

	733 mmHg		87%
	7.1 m/s		+5

29 December, Tuesday. day, 2°; night, -1°; clear

30 December, wed

	729 mmHg		86%
	6.9 m/s		+5

30 December, Wednesday. day, 2°; night, 1°; rain

31 December, thu

	729 mmHg		86%
	6.9 m/s		+5

31 December, Thursday. day, 2°; night, 1°; rain

1 January, fri

	731 mmHg		85%
	6.8 m/s		+5

1 January, Friday. day, 1°; night, -1°; rain

2 January, sat

	734 mmHg		85%
	7.4 m/s		+5

2 January, Saturday. day, 0°; night, -1°; snow

Average data for 10 years

Trondheim December

4

sunny days

22

days with precipitation

5

cloudy days

4 sunny days; 22 days with precipitation; 5 cloudy days;

86

%

air humidity

4.5

m/s

WindS

96

mm of precipitation

(10% of annual average)

+5

°C

Water temperature

air humidity 86%; 96 millimeters of precipitation (10% of annual average); Wind southerly 4.5 Meters per second; Water temperature +5°

Weather graphs for December

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

SW

SW

S

SW

SW

SW

S

S

S

S

S

S

S

S

S

S

S

S

S

S

S

S

S

S

SW

S

SW

SW

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

25

26

27

28

29

30

31

Daytime temperature

Night-time temperature

Cities near you

Oslo
Gjovik
Geiranger
Lillehammer
Geilo
Molde
Roros
Namsos
Steinkjer

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.

December in Trondheim is the snowiest and the windiest month of the year. In December, the weather in Trondheim is typically freezing. Average daily high temperature in December is about zero. On average, Trondheim has 17 snowy, 5 rainy, 4 sunny, 4 cloudy, and 1 partly cloudy day in December. The snowfalls are usually heavy.

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