Measurements:
°C
°F
CURRENT WEATHER
00:30
Seinajoki
56°F
N 7 mph
Feels like: 54°F
Precip: 29%
World Resorts Finland Seinajoki Weather

14 Day Weather Forecast

09.09
wed
DAY
54°F
N 6 mph
precip
44%
NIGHT
52°F
S 3 mph
precip
44%
09.10
thu
DAY
58°F
NE 10 mph
precip
31%
NIGHT
48°F
N 8 mph
precip
67%
09.11
fri
DAY
56°F
SE 6 mph
precip
18%
NIGHT
48°F
N 5 mph
precip
31%
09.12
sat
DAY
52°F
E 5 mph
precip
34%
NIGHT
50°F
NE 4 mph
precip
26%
09.13
sun
DAY
58°F
N 3 mph
precip
11%
NIGHT
54°F
SE 4 mph
precip
27%
09.14
mon
DAY
60°F
E 4 mph
precip
4%
NIGHT
44°F
NE 2 mph
precip
31%
09.15
tue
DAY
52°F
NW 5 mph
precip
16%
NIGHT
52°F
SW 4 mph
precip
31%
09.16
wed
DAY
54°F
S 6 mph
precip
23%
NIGHT
50°F
SW 1 mph
precip
26%
09.17
thu
DAY
54°F
NW 3 mph
precip
63%
NIGHT
50°F
NE 3 mph
precip
31%
09.18
fri
DAY
52°F
N 2 mph
precip
29%
NIGHT
46°F
N 5 mph
precip
42%
09.19
sat
DAY
52°F
S 7 mph
precip
33%
NIGHT
46°F
NW 3 mph
precip
31%
09.20
sun
DAY
54°F
N 6 mph
precip
7%
NIGHT
48°F
N 5 mph
precip
26%
09.21
mon
DAY
58°F
N 7 mph
precip
5%
NIGHT
50°F
N 4 mph
precip
15%

Seinajoki Sea Water Temperature in September, °F

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Seinajoki was 57.4°F. The maximum and minimum values were 51.8°F and 63.2°F respectively.

Seinajoki on the Weather Map

Best Time to Visit Seinajoki
The most sunny months:
May 11 days
July 11 days
June 10 days
The most warm months:
July 72.2 °F
August 68.2 °F
June 67.0 °F
Warmest sea temperature:
August 63.2 °F
July 62.3 °F
September 56.4 °F
The most cold months:
January 19.0 °F
February 22.4 °F
December 25.6 °F
The most rainy months:
July 5 days
August 5 days
September 3 days
The most windy months:
March 8 mph
December 7 mph
May 7 mph
more details
Finland Resorts:
NAME
F°
Espoo +60
Helsinki +60
Juvaskyla +56
Kemi +56
Koli National Park +56
Lahti +58
Lappeenranta +60
Oulu +54
Pori +60
Saariselka +42
Savolinna +56
Seinajoki +56
Turku +60
Vaasa +58
Vantaa +62
all resorts
24 Hours Weather Forecast
Seinajoki
Local time: 00:30
09 sep, wednesday
0300 56°F
N
7 mph
0600 54°F
N
8 mph
0900 54°F
NE
7 mph
1200 54°F
N
6 mph
1500 62°F
NE
6 mph
1800 58°F
NE
6 mph
2100 56°F
NE
4 mph
10 sep, thursday
0000 52°F
S
3 mph