Current sea water temperature:
+60.3°F
| Minimum sea water temperature in August: | 71.2°F |
| Maximum sea water temperature in August: | 46.6°F |
| Average sea water temperature in August: | 61.9°F |
| more information | |
14 days
forecast
forecast
| Seinajoki |
monthly
weather
weather
| Seinajoki |
Sea water temperature for the last 10 days:
| August 12 | 60.3°F | August 7 | 61.2°F |
| August 11 | 61.3°F | August 6 | 60.4°F |
| August 10 | 61.2°F | August 5 | 61.0°F |
| August 9 | 60.6°F | August 4 | 61.0°F |
| August 8 | 60.8°F | August 3 | 61.7°F |
Monthly sea water temperature, °F
When is the warmest sea in Seinajoki?
Based on the data about daily sea water temperature for the last three years the warmest sea in Seinajoki was noticed in August, July and September.
Monthly Sea Temperatures in Seinajoki, °F
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 63.4°F. The highest and lowest sea temperatures during the month were 71.2°F and 58.5°F.
Sea water temperature in July, °F
Show year:
2026
2025
2024
The average sea water temperature in July of 2026 was 64.0°F. The highest and lowest sea temperatures during the month were 67.8°F and 61.3°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 56.7°F. The highest and lowest sea temperatures during the month were 61.9°F and 51.6°F.
current
weather
weather
| Seinajoki |
weather in
August
August
| Seinajoki |
Best time for vacation in Seinajoki
Seinajoki on a weather map
Places in Finland:
Name
°F
24 Hours Forecast
Seinajoki
Local time: 00:17
August 13, thursday
0300
46°F
SE
1 mph
1 mph
0600
45°F
NW
2 mph
2 mph
0900
54°F
N
3 mph
3 mph
1200
63°F
N
4 mph
4 mph
1500
66°F
E
5 mph
5 mph
1800
59°F
E
6 mph
6 mph
2100
55°F
E
2 mph
2 mph
August 14, friday
0000
54°F
N
4 mph
4 mph
