Current sea water temperature:
+47.5°F
| Minimum sea water temperature in May: | 59.5°F |
| Maximum sea water temperature in May: | 37.0°F |
| Average sea water temperature in May: | 44.7°F |
| more information | |
14 days
forecast
forecast
| Vantaa |
monthly
weather
weather
| Vantaa |
Sea water temperature for the last 10 days:
| May 18 | 47.5°F | May 13 | 44.1°F |
| May 17 | 46.8°F | May 12 | 44.2°F |
| May 16 | 45.5°F | May 11 | 43.5°F |
| May 15 | 46.0°F | May 10 | 44.8°F |
| May 14 | 43.2°F | May 9 | 43.9°F |
Monthly sea water temperature, °F
When is the warmest sea in Vantaa?
Based on the data about daily sea water temperature for the last three years the warmest sea in Vantaa was noticed in August, July and September.
Monthly Sea Temperatures in Vantaa, °F
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 63.6°F. The highest and lowest sea temperatures during the month were 74.1°F and 56.8°F.
Sea water temperature in July, °F
Show year:
2025
2024
2023
The average sea water temperature in July of 2025 was 62.8°F. The highest and lowest sea temperatures during the month were 74.5°F and 54.1°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.
current
weather
weather
| Vantaa |
weather in
May
May
| Vantaa |
Best time for vacation in Vantaa
Vantaa on a weather map
Places in Finland:
Name
°F
24 Hours Forecast
Vantaa
Local time: 16:36
May 18, monday
1800

61°F
W
6 mph
6 mph
2100

55°F
SW
4 mph
4 mph
May 19, tuesday
0000

52°F
S
8 mph
8 mph
0300

50°F
SW
13 mph
13 mph
0600

52°F
SW
9 mph
9 mph
0900

57°F
W
10 mph
10 mph
1200

59°F
W
9 mph
9 mph
1500

63°F
W
7 mph
7 mph




























