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December weather forecast in Keflavík

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

	751 mmHg		78%
	12.1 m/s		+7

30 November, Sunday. day, 4°; night, 2°; rain

1 December, mon

	751 mmHg		78%
	12.6 m/s		+7

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

2 December, tue

	749 mmHg		78%
	12.3 m/s		+7

2 December, Tuesday. day, 4°; night, 1°; rain

3 December, wed

	750 mmHg		79%
	11.4 m/s		+7

3 December, Wednesday. day, 3°; night, 1°; partly cloudy

4 December, thu

	751 mmHg		78%
	10.2 m/s		+7

4 December, Thursday. day, 3°; night, 1°; rain

5 December, fri

	751 mmHg		79%
	11.3 m/s		+7

5 December, Friday. day, 3°; night, 1°; rain

6 December, sat

	750 mmHg		78%
	10.7 m/s		+7

6 December, Saturday. day, 3°; night, 2°; partly cloudy

7 December, sun

	750 mmHg		79%
	10.7 m/s		+7

7 December, Sunday. day, 3°; night, 1°; clear

8 December, mon

	750 mmHg		79%
	11.4 m/s		+7

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

9 December, tue

	749 mmHg		80%
	11.4 m/s		+7

9 December, Tuesday. day, 4°; night, 2°; rain

10 December, wed

	748 mmHg		81%
	12.6 m/s		+7

10 December, Wednesday. day, 4°; night, 2°; rain

11 December, thu

	750 mmHg		78%
	12.8 m/s		+7

11 December, Thursday. day, 4°; night, 2°; rain

12 December, fri

	751 mmHg		79%
	11.4 m/s		+7

12 December, Friday. day, 4°; night, 2°; overcast

13 December, sat

	750 mmHg		80%
	11.5 m/s		+7

13 December, Saturday. day, 4°; night, 2°; overcast

14 December, sun

	750 mmHg		79%
	11.8 m/s		+7

14 December, Sunday. day, 4°; night, 2°; rain

15 December, mon

	752 mmHg		78%
	11.9 m/s		+7

15 December, Monday. day, 3°; night, 2°; partly cloudy

16 December, tue

	752 mmHg		76%
	11.1 m/s		+7

16 December, Tuesday. day, 4°; night, 2°; rain

17 December, wed

	752 mmHg		80%
	11.2 m/s		+7

17 December, Wednesday. day, 4°; night, 2°; rain

18 December, thu

	752 mmHg		78%
	11 m/s		+7

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

19 December, fri

	753 mmHg		77%
	11.8 m/s		+7

19 December, Friday. day, 3°; night, 1°; rain

20 December, sat

	751 mmHg		80%
	12.3 m/s		+7

20 December, Saturday. day, 4°; night, 2°; rain

21 December, sun

	750 mmHg		79%
	11.9 m/s		+7

21 December, Sunday. day, 3°; night, 1°; rain

22 December, mon

	750 mmHg		77%
	11.3 m/s		+7

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

23 December, tue

	749 mmHg		77%
	11 m/s		+7

23 December, Tuesday. day, 2°; night, 1°; overcast

24 December, wed

	748 mmHg		78%
	12.7 m/s		+7

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

25 December, thu

	748 mmHg		74%
	11.9 m/s		+7

25 December, Thursday. day, 2°; night, 0°; overcast

26 December, fri

	749 mmHg		77%
	11.4 m/s		+7

26 December, Friday. day, 2°; night, 0°; rain

27 December, sat

	750 mmHg		77%
	12.4 m/s		+7

27 December, Saturday. day, 2°; night, 0°; clear

28 December, sun

	751 mmHg		76%
	11.1 m/s		+7

28 December, Sunday. day, 2°; night, 0°; clear

29 December, mon

	749 mmHg		76%
	12.1 m/s		+7

29 December, Monday. day, 2°; night, 0°; snow

30 December, tue

	747 mmHg		77%
	11.6 m/s		+7

30 December, Tuesday. day, 3°; night, 0°; rain

31 December, wed

	749 mmHg		78%
	11.4 m/s		+7

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

1 January, thu

	750 mmHg		77%
	10.8 m/s		+7

1 January, Thursday. day, 3°; night, 0°; partly cloudy

2 January, fri

	749 mmHg		81%
	10.9 m/s		+7

2 January, Friday. day, 3°; night, 2°; rain

3 January, sat

	750 mmHg		80%
	10.9 m/s		+7

3 January, Saturday. day, 4°; night, 1°; rain

Average data for 10 years

Keflavík December

3

sunny days

20

days with precipitation

14

cloudy days

3 sunny days; 20 days with precipitation; 14 cloudy days;

78

%

air humidity

8.6

m/s

WindSE

137

mm of precipitation

(10% of annual average)

+7

°C

Water temperature

air humidity 78%; 137 millimeters of precipitation (10% of annual average); Wind south-easterly 8.6 Meters per second; Water temperature +7°

Weather graphs for December

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

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Average data for 10 years

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Daytime temperature

Night-time temperature

Cities near you

Reykyavik
Torshavn
Akureyri
Isafjordur
Jan Mayen
Selfoss
Vestmannaeyjar
Borgarnes
Akranes

Cities with similar weather in December

Helsinki
Riga
Tallinn
Stockholm
Bellingshausen Station
Oslo
Yurmala
Toronto
Palanga

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

In December, the weather in Keflavík is typically cold. Average daily high temperature in December is about 3 degrees above zero. On average, Keflavík has 14 rainy, 7 partly cloudy, 6 cloudy, 3 sunny, and 1 snowy day in December. The rains are usually heavy. December as well as January, February, March, and April is considered the most uncomfortable time to visit Keflavík.

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