Measurements:
°C
°F
CURRENT WEATHER
14:21
Helsinki
48°F
N 4 mph
Feels like: 48°F
Precip: 6%
World Resorts Finland Helsinki Weather

7 Day Weather Forecast

10.19
mon
DAY
46°F
NW 2 mph
precip
10%
NIGHT
42°F
N 5 mph
precip
6%
10.20
tue
DAY
46°F
NW 7 mph
precip
5%
NIGHT
44°F
NW 7 mph
precip
10%
10.21
wed
DAY
50°F
NW 11 mph
precip
8%
NIGHT
48°F
NW 9 mph
precip
12%
10.22
thu
DAY
52°F
NW 12 mph
precip
8%
NIGHT
50°F
NW 12 mph
precip
64%
10.23
fri
DAY
50°F
NE 6 mph
precip
55%
NIGHT
46°F
W 4 mph
precip
39%
10.24
sat
DAY
48°F
NW 9 mph
precip
73%
NIGHT
48°F
E 4 mph
precip
31%
10.25
sun
DAY
50°F
N 9 mph
precip
21%
NIGHT
48°F
N 13 mph
precip
20%

Helsinki Sea Water Temperature in October, °F

Select Year: 2026 2025 2024

The average sea surface temperature in October 2026 for Helsinki was 12.2°F. The maximum and minimum values were 10.7°F and 13.3°F respectively.

Helsinki on the Weather Map

Best Time to Visit Helsinki
The most sunny months:
July 15 days
June 14 days
May 14 days
The most warm months:
July 70.6 °F
August 68.9 °F
June 64.7 °F
Warmest sea temperature:
August 64.4 °F
July 63.3 °F
September 59.7 °F
The most cold months:
January 25.5 °F
February 26.1 °F
December 31.9 °F
The most rainy months:
August 5 days
July 4 days
October 4 days
The most windy months:
December 12 mph
November 12 mph
January 11 mph
more details