World Resorts

Finland

Helsinki Weather

Helsinki 14 Days Forecast

29.12
mon

Day

28°F

SE 14 mph

Precip.
0%

Night

25°F

S 21 mph

Precip.
100%

30.12
tue

Day

25°F

S 20 mph

Precip.
68%

Night

19°F

S 19 mph

Precip.
0%

31.12
wed

Day

19°F

S 17 mph

Precip.
0%

Night

18°F

SE 11 mph

Precip.
0%

01.01
thu

Day

18°F

W 2 mph

Precip.
0%

Night

25°F

NW 19 mph

Precip.
0%

02.01
fri

Day

28°F

W 17 mph

Precip.
100%

Night

23°F

SW 17 mph

Precip.
100%

03.01
sat

Day

25°F

SW 14 mph

Precip.
100%

Night

21°F

SW 14 mph

Precip.
100%

04.01
sun

Day

19°F

SW 9 mph

Precip.
100%

Night

21°F

S 9 mph

Precip.
100%

05.01
mon

Day

18°F

SE 10 mph

Precip.
100%

Night

14°F

SW 8 mph

Precip.
0%

06.01
tue

Day

14°F

SE 8 mph

Precip.
0%

Night

12°F

SE 7 mph

Precip.
0%

07.01
wed

Day

27°F

NE 9 mph

Precip.
100%

Night

30°F

E 8 mph

Precip.
100%

08.01
thu

Day

37°F

E 14 mph

Precip.
0%

Night

37°F

NE 19 mph

Precip.
21%

09.01
fri

Day

37°F

E 15 mph

Precip.
77%

Night

37°F

E 12 mph

Precip.
78%

10.01
sat

Day

36°F

E 11 mph

Precip.
0%

Night

34°F

NE 9 mph

Precip.
0%

11.01
sun

Day

32°F

E 13 mph

Precip.
0%

Night

32°F

E 15 mph

Precip.
0%

sea water
temperature

Helsinki

monthly
weather

Helsinki

current
weather

Helsinki

7 days
forecast

Helsinki

January
February
March
April

May
June
July
August

September
October
November
December

Show year:

2025

2024

2023

The average sea water temperature in December of 2025 was 39.5°F. The highest and lowest sea temperatures during the month were 41.9°F and 36.7°F.

Show year:

2025

2024

2023

The average sea water temperature in January of 2025 was 34.9°F. The highest and lowest sea temperatures during the month were 36.9°F and 33.6°F.