Measurements:
°C
°F
CURRENT WEATHER
17:10
Seinajoki
60°F
E 7 mph
Feels like: 58°F
Precip: 53%
World Resorts Finland Seinajoki Weather

7 Day Weather Forecast

08.19
wed
DAY
62°F
SW 4 mph
precip
3%
NIGHT
50°F
SE 4 mph
precip
42%
08.20
thu
DAY
62°F
E 6 mph
precip
3%
NIGHT
50°F
NE 6 mph
precip
15%
08.21
fri
DAY
68°F
NE 9 mph
precip
2%
NIGHT
52°F
NE 4 mph
precip
51%
08.22
sat
DAY
66°F
N 4 mph
precip
4%
NIGHT
54°F
E 2 mph
precip
15%
08.23
sun
DAY
64°F
S 4 mph
precip
5%
NIGHT
54°F
S 8 mph
precip
22%
08.24
mon
DAY
60°F
S 8 mph
precip
3%
NIGHT
46°F
S 3 mph
precip
26%
08.25
tue
DAY
64°F
SW 2 mph
precip
3%
NIGHT
52°F
SW 1 mph
precip
12%

Seinajoki Sea Water Temperature in August, °F

Select Year: 2026 2025 2024

The average sea surface temperature in August 2026 for Seinajoki was 15.9°F. The maximum and minimum values were 14.5°F and 16.8°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 68.4 °F
June 67.0 °F
Warmest sea temperature:
August 63.3 °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:
August 6 days
July 5 days
September 3 days
The most windy months:
March 8 mph
December 7 mph
May 7 mph
more details