18.07
sat
sat
Day
70°F
N 11 mph
Precip.
24%
24%
Night
64°F
N 22 mph
Precip.
42%
42%
19.07
sun
sun
Day
61°F
E 14 mph
Precip.
22%
22%
Night
59°F
SW 7 mph
Precip.
8%
8%
20.07
mon
mon
Day
61°F
SW 13 mph
Precip.
3%
3%
Night
55°F
SW 16 mph
Precip.
9%
9%
21.07
tue
tue
Day
48°F
SW 16 mph
Precip.
54%
54%
Night
50°F
SW 11 mph
Precip.
31%
31%
22.07
wed
wed
Day
57°F
SW 8 mph
Precip.
21%
21%
Night
54°F
S 8 mph
Precip.
24%
24%
23.07
thu
thu
Day
61°F
S 6 mph
Precip.
26%
26%
Night
54°F
S 11 mph
Precip.
25%
25%
24.07
fri
fri
Day
59°F
S 6 mph
Precip.
13%
13%
Night
55°F
S 5 mph
Precip.
16%
16%
sea water
temperature
temperature
| Helsinki |
monthly
weather
weather
| Helsinki |
current
weather
weather
| Helsinki |
14 days
forecast
forecast
| Helsinki |
Sea water temperature in July, °F
Show year:
2026
2025
2024
The average sea water temperature in July of 2026 was 61.0°F. The highest and lowest sea temperatures during the month were 64.9°F and 58.5°F.
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 63.8°F. The highest and lowest sea temperatures during the month were 73.9°F and 56.5°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: 10:14
July 18, saturday
1200
70°F
N
11 mph
11 mph
1500
70°F
NW
9 mph
9 mph
1800
72°F
NW
11 mph
11 mph
2100
66°F
N
11 mph
11 mph
July 19, sunday
0000
64°F
N
22 mph
22 mph
0300
63°F
N
23 mph
23 mph
0600
61°F
NE
25 mph
25 mph
0900
61°F
E
19 mph
19 mph
