04.10
sun
sun
Day
57°F
NE 11 mph
Precip.
25%
25%
Night
46°F
E 6 mph
Precip.
26%
26%
05.10
mon
mon
Day
50°F
NE 5 mph
Precip.
45%
45%
Night
57°F
NE 15 mph
Precip.
39%
39%
06.10
tue
tue
Day
55°F
E 16 mph
Precip.
4%
4%
Night
50°F
E 14 mph
Precip.
4%
4%
07.10
wed
wed
Day
54°F
E 12 mph
Precip.
4%
4%
Night
43°F
SE 5 mph
Precip.
13%
13%
08.10
thu
thu
Day
50°F
NW 6 mph
Precip.
22%
22%
Night
50°F
W 16 mph
Precip.
76%
76%
09.10
fri
fri
Day
52°F
NE 7 mph
Precip.
55%
55%
Night
48°F
SE 1 mph
Precip.
29%
29%
10.10
sat
sat
Day
46°F
SE 7 mph
Precip.
66%
66%
Night
39°F
E 6 mph
Precip.
29%
29%
11.10
sun
sun
Day
41°F
S 3 mph
Precip.
29%
29%
Night
41°F
SW 8 mph
Precip.
45%
45%
12.10
mon
mon
Day
41°F
SW 10 mph
Precip.
38%
38%
Night
41°F
SW 11 mph
Precip.
44%
44%
13.10
tue
tue
Day
43°F
SW 11 mph
Precip.
59%
59%
Night
45°F
W 9 mph
Precip.
26%
26%
14.10
wed
wed
Day
41°F
SW 11 mph
Precip.
23%
23%
Night
41°F
SW 14 mph
Precip.
25%
25%
15.10
thu
thu
Day
45°F
W 17 mph
Precip.
33%
33%
Night
46°F
W 18 mph
Precip.
26%
26%
16.10
fri
fri
Day
45°F
NW 17 mph
Precip.
22%
22%
Night
45°F
NW 16 mph
Precip.
22%
22%
17.10
sat
sat
Day
43°F
NW 16 mph
Precip.
16%
16%
Night
45°F
N 17 mph
Precip.
19%
19%
sea water
temperature
temperature
| Helsinki |
monthly
weather
weather
| Helsinki |
current
weather
weather
| Helsinki |
7 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: 22:38
October 05, monday
0000
46°F
E
6 mph
6 mph
0300
46°F
E
4 mph
4 mph
0600
50°F
NE
6 mph
6 mph
0900
52°F
NE
7 mph
7 mph
1200
50°F
NE
5 mph
5 mph
1500
54°F
NE
6 mph
6 mph
1800
54°F
NE
7 mph
7 mph
2100
54°F
NE
9 mph
9 mph
