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December weather forecast in Bar Harbor

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

	761 mmHg		77%
	6.4 m/s		+9

30 November, Sunday. day, 4°; night, 0°; clear

1 December, mon

	758 mmHg		80%
	7.6 m/s		+10

1 December, Monday. day, 6°; night, 1°; rain

2 December, tue

	758 mmHg		76%
	7.3 m/s		+9

2 December, Tuesday. day, 5°; night, 0°; partly cloudy

3 December, wed

	758 mmHg		78%
	6.9 m/s		+9

3 December, Wednesday. day, 4°; night, 0°; rain

4 December, thu

	759 mmHg		76%
	6.2 m/s		+9

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

5 December, fri

	761 mmHg		76%
	6.1 m/s		+9

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

6 December, sat

	759 mmHg		79%
	6.7 m/s		+9

6 December, Saturday. day, 4°; night, 0°; rain

7 December, sun

	758 mmHg		77%
	6.5 m/s		+9

7 December, Sunday. day, 3°; night, 0°; overcast

8 December, mon

	759 mmHg		74%
	6.7 m/s		+8

8 December, Monday. day, 1°; night, -3°; clear

9 December, tue

	763 mmHg		74%
	6.3 m/s		+9

9 December, Tuesday. day, 1°; night, -4°; clear

10 December, wed

	760 mmHg		79%
	6.7 m/s		+9

10 December, Wednesday. day, 2°; night, -2°; rain

11 December, thu

	759 mmHg		80%
	6.4 m/s		+8

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

12 December, fri

	759 mmHg		78%
	6.9 m/s		+9

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

13 December, sat

	762 mmHg		75%
	6 m/s		+8

13 December, Saturday. day, 2°; night, -2°; clear

14 December, sun

	762 mmHg		77%
	6.6 m/s		+8

14 December, Sunday. day, 1°; night, -3°; partly cloudy

15 December, mon

	760 mmHg		76%
	7.1 m/s		+8

15 December, Monday. day, 2°; night, -2°; clear

16 December, tue

	762 mmHg		75%
	6.7 m/s		+8

16 December, Tuesday. day, 1°; night, -4°; clear

17 December, wed

	759 mmHg		79%
	6.9 m/s		+8

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

18 December, thu

	757 mmHg		78%
	7.5 m/s		+8

18 December, Thursday. day, 2°; night, -2°; rain

19 December, fri

	759 mmHg		76%
	6.3 m/s		+8

19 December, Friday. day, 1°; night, -4°; clear

20 December, sat

	759 mmHg		76%
	6.3 m/s		+7

20 December, Saturday. day, 1°; night, -3°; partly cloudy

21 December, sun

	759 mmHg		78%
	7.3 m/s		+8

21 December, Sunday. day, 1°; night, -4°; snow

22 December, mon

	759 mmHg		78%
	6.3 m/s		+7

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

23 December, tue

	761 mmHg		78%
	6.6 m/s		+8

23 December, Tuesday. day, 2°; night, -3°; partly cloudy

24 December, wed

	760 mmHg		78%
	7 m/s		+8

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

25 December, thu

	760 mmHg		75%
	7 m/s		+8

25 December, Thursday. day, 1°; night, -2°; clear

26 December, fri

	761 mmHg		75%
	6.3 m/s		+8

26 December, Friday. day, 0°; night, -4°; partly cloudy

27 December, sat

	758 mmHg		78%
	6.8 m/s		+7

27 December, Saturday. day, 1°; night, -3°; snow

28 December, sun

	758 mmHg		78%
	6.5 m/s		+7

28 December, Sunday. day, 1°; night, -4°; partly cloudy

29 December, mon

	758 mmHg		77%
	6.2 m/s		+7

29 December, Monday. day, 1°; night, -3°; partly cloudy

30 December, tue

	757 mmHg		77%
	6.9 m/s		+8

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

31 December, wed

	758 mmHg		76%
	6.3 m/s		+8

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

1 January, thu

	758 mmHg		77%
	6.3 m/s		+7

1 January, Thursday. day, 0°; night, -5°; clear

2 January, fri

	759 mmHg		75%
	6.3 m/s		+7

2 January, Friday. day, 0°; night, -6°; snow

3 January, sat

	759 mmHg		76%
	6.2 m/s		+6

3 January, Saturday. day, -1°; night, -6°; overcast

Average data for 10 years

Bar Harbor December

11

sunny days

12

days with precipitation

9

cloudy days

11 sunny days; 12 days with precipitation; 9 cloudy days;

77

%

air humidity

4.69

m/s

WindSW

128

mm of precipitation

(11% of annual average)

+8

°C

Water temperature

air humidity 77%; 128 millimeters of precipitation (11% of annual average); Wind south-westerly 4.69 Meters per second; Water temperature +8°

Weather graphs for December

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

SW

SW

SW

W

SW

SW

SW

W

SW

SW

SW

SW

W

SW

SW

SW

S

SW

SW

S

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

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27

28

29

30

31

Daytime temperature

Night-time temperature

Cities near you

Boston
Quebec
Saint John
Berlin
New Bedford
Saint Johnsbury
Portland
Hillsborough
Augusta

Cities with similar weather in December

Helsinki
Riga
Tallinn
Stockholm
Oslo
Yurmala
Toronto
Palanga
Chicago

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

December in Bar Harbor is the windiest month of the year. In December, the weather in Bar Harbor is typically cold. Average daily high temperature in December is about 2 degrees above zero. On average, Bar Harbor has 11 sunny, 8 partly cloudy, 5 rainy, 4 cloudy, and 3 snowy 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 Bar Harbor.

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