26.12
fri
fri
Day
34°F
E 5 mph
Precip.
0%
0%
Night
34°F
E 5 mph
Precip.
0%
0%
27.12
sat
sat
Day
34°F
SE 16 mph
Precip.
0%
0%
Night
28°F
S 22 mph
Precip.
0%
0%
28.12
sun
sun
Day
28°F
E 6 mph
Precip.
0%
0%
Night
30°F
SE 6 mph
Precip.
0%
0%
29.12
mon
mon
Day
27°F
SE 11 mph
Precip.
65%
65%
Night
27°F
SE 11 mph
Precip.
0%
0%
30.12
tue
tue
Day
27°F
S 11 mph
Precip.
0%
0%
Night
23°F
S 11 mph
Precip.
100%
100%
31.12
wed
wed
Day
21°F
S 11 mph
Precip.
66%
66%
Night
21°F
NE 7 mph
Precip.
100%
100%
01.01
thu
thu
Day
16°F
S 4 mph
Precip.
0%
0%
Night
12°F
NE 2 mph
Precip.
0%
0%
sea water
temperature
temperature
| Seinajoki |
monthly
weather
weather
| Seinajoki |
current
weather
weather
| Seinajoki |
14 days
forecast
forecast
| Seinajoki |
Sea water temperature in December, °F
Show year:
2025
2024
2023
The average sea water temperature in December of 2025 was 33.1°F. The highest and lowest sea temperatures during the month were 36.5°F and 30.7°F.
Sea water temperature in January, °F
Show year:
2025
2024
2023
The average sea water temperature in January of 2025 was 30.7°F. The highest and lowest sea temperatures during the month were 33.3°F and 28.4°F.
Air temperature in Seinajoki, °F
Precipitation total in Seinajoki, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Seinajoki
Seinajoki on a weather map
Places in Finland:
Name
°F
24 Hours Forecast
Seinajoki
Local time: 03:39
December 26, friday
0600
34°F
SE
4 mph
4 mph
0900
34°F
E
4 mph
4 mph
1200
34°F
E
5 mph
5 mph
1500
36°F
E
6 mph
6 mph
1800
36°F
E
6 mph
6 mph
2100
34°F
E
5 mph
5 mph
December 27, saturday
0000
34°F
E
5 mph
5 mph
0300
34°F
NE
6 mph
6 mph
