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December weather forecast in Porvoo

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

	756 mmHg		89%
	5.1 m/s		+5

30 November, Sunday. day, 0°; night, -2°; snow

1 December, mon

	755 mmHg		90%
	5.1 m/s		+5

1 December, Monday. day, 0°; night, -3°; overcast

2 December, tue

	755 mmHg		90%
	4.6 m/s		+5

2 December, Tuesday. day, 0°; night, -3°; overcast

3 December, wed

	755 mmHg		91%
	4.4 m/s		+5

3 December, Wednesday. day, 0°; night, -3°; overcast

4 December, thu

	754 mmHg		92%
	4.4 m/s		+5

4 December, Thursday. day, 0°; night, -4°; rain

5 December, fri

	754 mmHg		90%
	4.69 m/s		+5

5 December, Friday. day, 0°; night, -4°; overcast

6 December, sat

	754 mmHg		91%
	4.9 m/s		+5

6 December, Saturday. day, 0°; night, -2°; rain

7 December, sun

	754 mmHg		90%
	4.6 m/s		+5

7 December, Sunday. day, 0°; night, -3°; rain

8 December, mon

	755 mmHg		90%
	4.5 m/s		+4

8 December, Monday. day, 0°; night, -3°; rain

9 December, tue

	757 mmHg		91%
	4.69 m/s		+4

9 December, Tuesday. day, 0°; night, -3°; overcast

10 December, wed

	756 mmHg		92%
	4.6 m/s		+4

10 December, Wednesday. day, 0°; night, -2°; rain

11 December, thu

	756 mmHg		92%
	4.8 m/s		+4

11 December, Thursday. day, 0°; night, -2°; overcast

12 December, fri

	755 mmHg		90%
	5 m/s		+4

12 December, Friday. day, 0°; night, -2°; rain

13 December, sat

	755 mmHg		89%
	4.8 m/s		+4

13 December, Saturday. day, 0°; night, -3°; rain

14 December, sun

	756 mmHg		91%
	4.19 m/s		+3

14 December, Sunday. day, -1°; night, -4°; clear

15 December, mon

	755 mmHg		91%
	4.5 m/s		+3

15 December, Monday. day, -1°; night, -4°; snow

16 December, tue

	754 mmHg		91%
	4.8 m/s		+3

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

17 December, wed

	754 mmHg		90%
	5 m/s		+3

17 December, Wednesday. day, 0°; night, -4°; overcast

18 December, thu

	753 mmHg		91%
	5 m/s		+3

18 December, Thursday. day, -1°; night, -4°; snow

19 December, fri

	751 mmHg		91%
	4.9 m/s		+3

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

20 December, sat

	752 mmHg		89%
	4.9 m/s		+3

20 December, Saturday. day, -1°; night, -5°; rain

21 December, sun

	752 mmHg		89%
	4.6 m/s		+3

21 December, Sunday. day, -3°; night, -6°; partly cloudy

22 December, mon

	751 mmHg		89%
	4.9 m/s		+3

22 December, Monday. day, -3°; night, -6°; partly cloudy

23 December, tue

	750 mmHg		89%
	5 m/s		+3

23 December, Tuesday. day, -2°; night, -6°; snow

24 December, wed

	750 mmHg		89%
	5.1 m/s		+3

24 December, Wednesday. day, -2°; night, -8°; overcast

25 December, thu

	750 mmHg		89%
	5 m/s		+3

25 December, Thursday. day, -3°; night, -7°; snow

26 December, fri

	750 mmHg		89%
	5.4 m/s		+3

26 December, Friday. day, -1°; night, -6°; partly cloudy

27 December, sat

	752 mmHg		90%
	4.6 m/s		+3

27 December, Saturday. day, -2°; night, -5°; clear

28 December, sun

	755 mmHg		89%
	4.8 m/s		+3

28 December, Sunday. day, -2°; night, -7°; overcast

29 December, mon

	754 mmHg		92%
	5 m/s		+3

29 December, Monday. day, -2°; night, -5°; snow

30 December, tue

	753 mmHg		92%
	5 m/s		+3

30 December, Tuesday. day, -1°; night, -5°; rain

31 December, wed

	753 mmHg		90%
	4.5 m/s		+3

31 December, Wednesday. day, -2°; night, -5°; partly cloudy

1 January, thu

	753 mmHg		90%
	4.6 m/s		+2

1 January, Thursday. day, -2°; night, -6°; clear

2 January, fri

	754 mmHg		89%
	4.9 m/s		+2

2 January, Friday. day, -4°; night, -7°; snow

3 January, sat

	754 mmHg		89%
	4.6 m/s		+2

3 January, Saturday. day, -4°; night, -8°; partly cloudy

Average data for 10 years

Porvoo December

2

sunny days

14

days with precipitation

22

cloudy days

2 sunny days; 14 days with precipitation; 22 cloudy days;

90

%

air humidity

3.6

m/s

WindS

61

mm of precipitation

(9% of annual average)

+4

°C

Water temperature

air humidity 90%; 61 millimeters of precipitation (9% of annual average); Wind southerly 3.6 Meters per second; Water temperature +4°

Weather graphs for December

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

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S

S

S

S

S

S

S

S

S

S

S

S

S

S

SW

SW

SW

SW

S

SW

S

SW

S

S

SW

S

S

S

S

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

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31

Daytime temperature

Night-time temperature

Cities near you

Pskov
Tallinn
Helsinki
Riga
Vyborg
Gdov
Ust'-Luga
Sovetskiy
Sosnoviy Bor, Sosnovy Bor Urban Okrug

Cities with similar weather in December

Riga
Stockholm
Bellingshausen Station
Reykyavik
Oslo
Yurmala
Toronto
Palanga
Chicago

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

December in Porvoo is the windiest month of the year. In December, the weather in Porvoo is typically freezing. Average daily high temperature in December is about 1 degree below zero. On average, Porvoo has 15 cloudy, 6 partly cloudy, 5 snowy, 3 rainy, and 2 sunny days in December. The snowfalls are usually moderate. December as well as March, April, October, and November is considered the most uncomfortable time to visit Porvoo.

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