Current sea water temperature:
+60.8°F
| Minimum sea water temperature in September: | 63.7°F |
| Maximum sea water temperature in September: | 48.0°F |
| Average sea water temperature in September: | 55.8°F |
| more information | |
14 days
forecast
forecast
| Seinajoki |
monthly
weather
weather
| Seinajoki |
Sea water temperature for the last 10 days:
| September 5 | 60.8°F | August 31 | 61.3°F |
| September 4 | 60.6°F | August 30 | 60.3°F |
| September 3 | 61.0°F | August 29 | 61.0°F |
| September 2 | 60.4°F | August 28 | 61.2°F |
| September 1 | 60.8°F | August 27 | 60.6°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:
2026
2025
2024
The average sea water temperature in August of 2026 was 60.5°F. The highest and lowest sea temperatures during the month were 62.2°F and 58.1°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
September
September
| Seinajoki |
Best time for vacation in Seinajoki
Seinajoki on a weather map
Places in Finland:
Name
°F
24 Hours Forecast
Seinajoki
Local time: 09:08
September 06, sunday
1200
52°F
S
11 mph
11 mph
1500
54°F
S
11 mph
11 mph
1800
52°F
S
8 mph
8 mph
2100
45°F
SE
4 mph
4 mph
September 07, monday
0000
41°F
E
2 mph
2 mph
0300
41°F
NE
2 mph
2 mph
0600
41°F
N
3 mph
3 mph
0900
46°F
N
5 mph
5 mph
