Measurements:
°C
°F
CURRENT WEATHER
11:14
Seinajoki
70°F
SW 3 mph
Feels like: 70°F
Precip: 0%
World Resorts Finland Seinajoki Weather

7 Day Weather Forecast

05.30
sat
DAY
70°F
SW 3 mph
precip
0%
NIGHT
52°F
SW 4 mph
precip
0%
05.31
sun
DAY
70°F
NW 3 mph
precip
0%
NIGHT
54°F
E 6 mph
precip
0%
06.01
mon
DAY
66°F
NE 5 mph
precip
0%
NIGHT
54°F
SW 5 mph
precip
73%
06.02
tue
DAY
70°F
N 5 mph
precip
0%
NIGHT
54°F
SE 3 mph
precip
0%
06.03
wed
DAY
70°F
SW 4 mph
precip
100%
NIGHT
56°F
NW 3 mph
precip
0%
06.04
thu
DAY
74°F
W 6 mph
precip
0%
NIGHT
58°F
NW 5 mph
precip
0%
06.05
fri
DAY
72°F
NW 9 mph
precip
0%
NIGHT
56°F
NE 2 mph
precip
0%

Seinajoki Sea Water Temperature in May, °F

Select Year: 2026 2025 2024

The average sea surface temperature in May 2026 for Seinajoki was 7.9°F. The maximum and minimum values were 5.1°F and 12.9°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 72.5 °F
August 68.4 °F
June 66.9 °F
Warmest sea temperature:
August 63.3 °F
July 62.1 °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
June 4 days
The most windy months:
March 8 mph
December 7 mph
May 7 mph
more details