26.08
wed
wed
Day
68°F
E 2 mph
Precip.
4%
4%
Night
61°F
S 2 mph
Precip.
20%
20%
27.08
thu
thu
Day
64°F
N 2 mph
Precip.
13%
13%
Night
57°F
N 1 mph
Precip.
17%
17%
28.08
fri
fri
Day
63°F
NW 6 mph
Precip.
33%
33%
Night
59°F
NW 6 mph
Precip.
25%
25%
29.08
sat
sat
Day
63°F
NW 12 mph
Precip.
17%
17%
Night
61°F
N 17 mph
Precip.
65%
65%
30.08
sun
sun
Day
66°F
NE 14 mph
Precip.
26%
26%
Night
61°F
NE 12 mph
Precip.
42%
42%
31.08
mon
mon
Day
61°F
NE 11 mph
Precip.
38%
38%
Night
59°F
N 8 mph
Precip.
15%
15%
01.09
tue
tue
Day
61°F
N 9 mph
Precip.
50%
50%
Night
57°F
E 4 mph
Precip.
39%
39%
Sea water temperature in August, °F
Show year:
2026
2025
2024
The average sea water temperature in August of 2026 was 60.1°F. The highest and lowest sea temperatures during the month were 64.8°F and 56.3°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 59.5°F. The highest and lowest sea temperatures during the month were 63.1°F and 54.9°F.
Air temperature in Vantaa, °F
Precipitation total in Vantaa, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Vantaa
Vantaa on a weather map
Places in Finland:
Name
°F
24 Hours Forecast
Vantaa
Local time: 04:00
August 26, wednesday
0600
57°F
SE
4 mph
4 mph
0900
61°F
S
3 mph
3 mph
1200
68°F
E
2 mph
2 mph
1500
68°F
NE
4 mph
4 mph
1800
63°F
NE
6 mph
6 mph
2100
61°F
E
4 mph
4 mph
August 27, thursday
0000
61°F
S
2 mph
2 mph
0300
61°F
S
3 mph
3 mph
