06.10
tue
tue
Day
55°F
E 16 mph
Precip.
4%
4%
Night
50°F
E 13 mph
Precip.
5%
5%
07.10
wed
wed
Day
54°F
E 11 mph
Precip.
4%
4%
Night
45°F
E 4 mph
Precip.
13%
13%
08.10
thu
thu
Day
52°F
NW 8 mph
Precip.
25%
25%
Night
54°F
NW 12 mph
Precip.
29%
29%
09.10
fri
fri
Day
52°F
N 14 mph
Precip.
20%
20%
Night
45°F
E 9 mph
Precip.
32%
32%
10.10
sat
sat
Day
46°F
E 11 mph
Precip.
23%
23%
Night
41°F
SE 4 mph
Precip.
16%
16%
11.10
sun
sun
Day
43°F
SW 5 mph
Precip.
8%
8%
Night
37°F
SW 7 mph
Precip.
12%
12%
12.10
mon
mon
Day
45°F
SW 9 mph
Precip.
10%
10%
Night
43°F
SW 9 mph
Precip.
29%
29%
sea water
temperature
temperature
| Helsinki |
monthly
weather
weather
| Helsinki |
current
weather
weather
| Helsinki |
14 days
forecast
forecast
| Helsinki |
Sea water temperature in October, °F
Show year:
2025
2024
2023
The average sea water temperature in October of 2025 was 50.5°F. The highest and lowest sea temperatures during the month were 54.9°F and 46.8°F.
Air temperature in Helsinki, °F
Precipitation total in Helsinki, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Helsinki
Helsinki on a weather map
Places in Finland:
Name
°F
24 Hours Forecast
Helsinki
Local time: 22:08
October 07, wednesday
0000
50°F
E
13 mph
13 mph
0300
48°F
E
11 mph
11 mph
0600
48°F
E
11 mph
11 mph
0900
48°F
E
11 mph
11 mph
1200
54°F
E
11 mph
11 mph
1500
55°F
E
10 mph
10 mph
1800
52°F
E
7 mph
7 mph
2100
46°F
E
6 mph
6 mph
