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December weather forecast in Saint Helier

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

	758 mmHg		75%
	11.1 m/s		+12

30 November, Sunday. day, 9°; night, 8°; rain

1 December, mon

	759 mmHg		74%
	11.3 m/s		+12

1 December, Monday. day, 10°; night, 9°; rain

2 December, tue

	759 mmHg		75%
	12.3 m/s		+12

2 December, Tuesday. day, 10°; night, 9°; rain

3 December, wed

	759 mmHg		75%
	12.1 m/s		+12

3 December, Wednesday. day, 11°; night, 10°; rain

4 December, thu

	757 mmHg		74%
	13.8 m/s		+12

4 December, Thursday. day, 11°; night, 9°; rain

5 December, fri

	757 mmHg		73%
	13.1 m/s		+12

5 December, Friday. day, 11°; night, 10°; rain

6 December, sat

	759 mmHg		75%
	13.3 m/s		+12

6 December, Saturday. day, 11°; night, 10°; rain

7 December, sun

	761 mmHg		72%
	13.6 m/s		+12

7 December, Sunday. day, 10°; night, 10°; rain

8 December, mon

	765 mmHg		70%
	11.1 m/s		+12

8 December, Monday. day, 10°; night, 9°; overcast

9 December, tue

	763 mmHg		73%
	11.3 m/s		+12

9 December, Tuesday. day, 11°; night, 9°; overcast

10 December, wed

	760 mmHg		74%
	12 m/s		+12

10 December, Wednesday. day, 10°; night, 10°; rain

11 December, thu

	760 mmHg		74%
	10.8 m/s		+12

11 December, Thursday. day, 10°; night, 9°; overcast

12 December, fri

	758 mmHg		75%
	12.3 m/s		+11

12 December, Friday. day, 9°; night, 9°; rain

13 December, sat

	755 mmHg		75%
	13.6 m/s		+11

13 December, Saturday. day, 10°; night, 8°; rain

14 December, sun

	755 mmHg		75%
	13.5 m/s		+11

14 December, Sunday. day, 10°; night, 9°; rain

15 December, mon

	756 mmHg		76%
	12.8 m/s		+11

15 December, Monday. day, 10°; night, 10°; rain

16 December, tue

	757 mmHg		77%
	12.1 m/s		+11

16 December, Tuesday. day, 10°; night, 9°; rain

17 December, wed

	759 mmHg		75%
	13.3 m/s		+11

17 December, Wednesday. day, 10°; night, 9°; rain

18 December, thu

	759 mmHg		76%
	11.5 m/s		+11

18 December, Thursday. day, 10°; night, 9°; rain

19 December, fri

	761 mmHg		76%
	11.3 m/s		+11

19 December, Friday. day, 11°; night, 10°; rain

20 December, sat

	759 mmHg		81%
	12.6 m/s		+11

20 December, Saturday. day, 11°; night, 10°; clear

21 December, sun

	760 mmHg		81%
	11.5 m/s		+11

21 December, Sunday. day, 11°; night, 10°; clear

22 December, mon

	760 mmHg		79%
	12.8 m/s		+11

22 December, Monday. day, 11°; night, 10°; rain

23 December, tue

	758 mmHg		80%
	13.3 m/s		+11

23 December, Tuesday. day, 10°; night, 10°; rain

24 December, wed

	760 mmHg		75%
	12.1 m/s		+11

24 December, Wednesday. day, 10°; night, 10°; overcast

25 December, thu

	759 mmHg		75%
	12.3 m/s		+11

25 December, Thursday. day, 10°; night, 9°; rain

26 December, fri

	757 mmHg		72%
	15.3 m/s		+11

26 December, Friday. day, 10°; night, 9°; rain

27 December, sat

	759 mmHg		70%
	13.5 m/s		+11

27 December, Saturday. day, 9°; night, 8°; rain

28 December, sun

	762 mmHg		74%
	12.1 m/s		+11

28 December, Sunday. day, 10°; night, 8°; rain

29 December, mon

	759 mmHg		77%
	13.1 m/s		+11

29 December, Monday. day, 10°; night, 9°; rain

30 December, tue

	759 mmHg		77%
	12.1 m/s		+11

30 December, Tuesday. day, 9°; night, 9°; rain

31 December, wed

	759 mmHg		77%
	12.1 m/s		+11

31 December, Wednesday. day, 9°; night, 9°; clear

1 January, thu

	759 mmHg		79%
	12.6 m/s		+10

1 January, Thursday. day, 9°; night, 7°; overcast

2 January, fri

	760 mmHg		73%
	12.3 m/s		+10

2 January, Friday. day, 9°; night, 8°; rain

3 January, sat

	758 mmHg		77%
	13.6 m/s		+10

3 January, Saturday. day, 9°; night, 8°; rain

Average data for 10 years

Saint Helier December

3

sunny days

24

days with precipitation

4

cloudy days

3 sunny days; 24 days with precipitation; 4 cloudy days;

75

%

air humidity

10

m/s

WindSW

99

mm of precipitation

(13% of annual average)

+11

°C

Water temperature

air humidity 75%; 99 millimeters of precipitation (13% of annual average); Wind south-westerly 10 Meters per second; Water temperature +11°

Weather graphs for December

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

N

NW

W

W

W

SW

W

W

W

W

SW

S

SW

SW

W

W

W

W

W

SW

SW

SW

SW

SW

SW

W

SW

SW

S

SW

SW

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

London
Brest
Oxford
Trowbridge
Rouen
Le Havre
Bournemouth
Birmingham
Carnac

Cities with similar weather in December

Gagra
Suhum
Baku
Pitsunda
Burgas
New Athos
The Sunny Beach
Podgorica
Gudauta

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

December in Saint Helier is the windiest month of the year. In December, the weather in Saint Helier is typically warm. Average daily high temperature in December is about 10 degrees above zero. On average, Saint Helier has 24 rainy, 4 cloudy, and 3 sunny days in December. The rains are usually heavy. December as well as January, February, and November is considered the most uncomfortable time to visit Saint Helier.

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