Helsinki Weather Averages

Climate averages for Helsinki based on 10 years of historical data.

Average Helsinki temperatures by month

Avg high

-1°

J

-1°

F

2°

M

7°

A

13°

M

18°

J

20°

J

20°

A

15°

S

9°

O

5°

N

1°

D

Avg low

-5°

J

-5°

F

-3°

M

1°

A

6°

M

12°

J

14°

J

14°

A

11°

S

5°

O

2°

N

-2°

D

Average rainfall in Helsinki by month

Rainfall (mm)

68

J

63

F

49

M

45

A

49

M

60

J

86

J

88

A

74

S

82

O

78

N

67

D

Sunshine hours in Helsinki by month

Sunshine (h/day)

1

J

1

F

2

M

3

A

6

M

6

J

4

J

4

A

3

S

2

O

1

N

1

D

Humidity in Helsinki by month

Average humidity

89%

J

89%

F

85%

M

78%

A

70%

M

71%

J

75%

J

76%

A

79%

S

82%

O

85%

N

87%

D

Month-by-month averages

Month	Avg High	Avg Low	Rainfall	Sunshine
Pogoda w styczniu	-1°C	-5°C	68 mm	1.0h
Pogoda w lutym	-1°C	-5°C	63 mm	1.5h
Pogoda w marcu	2°C	-3°C	49 mm	2.3h
Pogoda w kwietniu	7°C	1°C	45 mm	3.3h
Pogoda w maju	13°C	6°C	49 mm	5.8h
Pogoda w czerwcu	18°C	12°C	60 mm	6.0h
Pogoda w lipcu	20°C	14°C	86 mm	3.7h
Pogoda w sierpniu	20°C	14°C	88 mm	3.7h
Pogoda we wrześniu	15°C	11°C	74 mm	3.0h
Pogoda w październiku	9°C	5°C	82 mm	2.0h
Pogoda w listopadzie	5°C	2°C	78 mm	1.1h
Pogoda w grudniu	1°C	-2°C	67 mm	0.8h