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December weather forecast in Saint John

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

	750 mmHg		78%
	5.3 m/s		+9

30 November, Sunday. day, 2°; night, -3°; clear

1 December, mon

	747 mmHg		83%
	6.2 m/s		+9

1 December, Monday. day, 4°; night, 0°; rain

2 December, tue

	747 mmHg		79%
	6.4 m/s		+9

2 December, Tuesday. day, 3°; night, -1°; rain

3 December, wed

	747 mmHg		80%
	5.9 m/s		+9

3 December, Wednesday. day, 2°; night, -1°; rain

4 December, thu

	747 mmHg		79%
	5.6 m/s		+9

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

5 December, fri

	750 mmHg		79%
	5.2 m/s		+9

5 December, Friday. day, 1°; night, -3°; clear

6 December, sat

	748 mmHg		81%
	5.7 m/s		+9

6 December, Saturday. day, 2°; night, -4°; rain

7 December, sun

	747 mmHg		78%
	5.5 m/s		+9

7 December, Sunday. day, 1°; night, -3°; rain

8 December, mon

	748 mmHg		76%
	5.6 m/s		+9

8 December, Monday. day, 0°; night, -4°; clear

9 December, tue

	752 mmHg		75%
	5 m/s		+8

9 December, Tuesday. day, -1°; night, -6°; clear

10 December, wed

	750 mmHg		79%
	5.4 m/s		+8

10 December, Wednesday. day, 0°; night, -5°; overcast

11 December, thu

	749 mmHg		81%
	5.4 m/s		+8

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

12 December, fri

	749 mmHg		78%
	5.8 m/s		+8

12 December, Friday. day, 1°; night, -3°; clear

13 December, sat

	751 mmHg		75%
	5.3 m/s		+8

13 December, Saturday. day, 0°; night, -5°; clear

14 December, sun

	751 mmHg		76%
	5.6 m/s		+8

14 December, Sunday. day, 0°; night, -5°; snow

15 December, mon

	749 mmHg		76%
	6.1 m/s		+8

15 December, Monday. day, 0°; night, -4°; rain

16 December, tue

	750 mmHg		75%
	5.7 m/s		+8

16 December, Tuesday. day, 0°; night, -5°; clear

17 December, wed

	749 mmHg		77%
	5.8 m/s		+8

17 December, Wednesday. day, 0°; night, -6°; snow

18 December, thu

	746 mmHg		77%
	6.5 m/s		+8

18 December, Thursday. day, 0°; night, -3°; rain

19 December, fri

	747 mmHg		75%
	5.6 m/s		+7

19 December, Friday. day, -1°; night, -5°; clear

20 December, sat

	748 mmHg		76%
	5.3 m/s		+7

20 December, Saturday. day, -1°; night, -6°; partly cloudy

21 December, sun

	748 mmHg		78%
	6 m/s		+7

21 December, Sunday. day, 0°; night, -5°; partly cloudy

22 December, mon

	748 mmHg		79%
	5.6 m/s		+8

22 December, Monday. day, 0°; night, -5°; snow

23 December, tue

	750 mmHg		79%
	5.4 m/s		+7

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

24 December, wed

	749 mmHg		79%
	5.8 m/s		+7

24 December, Wednesday. day, 1°; night, -4°; rain

25 December, thu

	748 mmHg		74%
	5.9 m/s		+7

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

26 December, fri

	749 mmHg		75%
	5.5 m/s		+7

26 December, Friday. day, 0°; night, -5°; partly cloudy

27 December, sat

	747 mmHg		78%
	5.7 m/s		+7

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

28 December, sun

	747 mmHg		80%
	5.7 m/s		+7

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

29 December, mon

	747 mmHg		79%
	5.2 m/s		+7

29 December, Monday. day, 0°; night, -5°; partly cloudy

30 December, tue

	746 mmHg		76%
	5.8 m/s		+7

30 December, Tuesday. day, -1°; night, -6°; clear

31 December, wed

	747 mmHg		76%
	5.7 m/s		+7

31 December, Wednesday. day, -3°; night, -7°; clear

1 January, thu

	747 mmHg		76%
	5.2 m/s		+6

1 January, Thursday. day, -2°; night, -8°; snow

2 January, fri

	747 mmHg		74%
	5.5 m/s		+6

2 January, Friday. day, -4°; night, -8°; clear

3 January, sat

	748 mmHg		75%
	5.1 m/s		+6

3 January, Saturday. day, -3°; night, -9°; snow

Average data for 10 years

Saint John December

10

sunny days

13

days with precipitation

10

cloudy days

10 sunny days; 13 days with precipitation; 10 cloudy days;

78

%

air humidity

3.9

m/s

WindSW

125

mm of precipitation

(10% of annual average)

+8

°C

Water temperature

air humidity 78%; 125 millimeters of precipitation (10% of annual average); Wind south-westerly 3.9 Meters per second; Water temperature +8°

Weather graphs for December

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

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

S

SW

W

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

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

Halifax
Bangor
Liverpool
New Glasgow
Augusta
Bridgewater
Bonaventure
Iles de la Madeleine
Charlottetown

Cities with similar weather in December

Helsinki
Riga
Tallinn
Stockholm
Bellingshausen Station
Reykyavik
Oslo
Yurmala
Toronto

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

December in Saint John is the windiest month of the year. In December, the weather in Saint John is typically freezing. Average daily high temperature in December is about zero. On average, Saint John has 10 sunny, 8 partly cloudy, 5 snowy, 4 rainy, and 4 cloudy days in December. The snowfalls are usually heavy. December as well as March, April, May, and October is considered the most uncomfortable time to visit Saint John.

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