Measurements:
°C
°F
Seinajoki
36°F
N 5 mph
Feels like: 32°F
Precip: 0%
World Resorts Finland Seinajoki Weather August Weather in Seinajoki

Seinajoki Weather: August

Average Day Temperature: 68.4°F
Average Night Temperature: 53.7°F
Sea Water Temperature: 63.3°F
Number of Sunny Days: 9 days
Sunshine Hours: 14.5 - 17.5 hours
Number of Rainy Days: 6 days
Precipitation Totals: 2.7 in

Air Temperature in August, °F

Select Year: 2025 2024 2023

The highest day temperature in August 2025 was 83°F. The lowest night temperature was 40°F. The average values for day and night temperatures during August were 66.5°F и 51.9°F respectivly.

Seinajoki Water Sea Temperature in August, °F

Select Year: 2025 2024 2023

The average sea surface temperature in August 2025 for Seinajoki was 64.8°F. The maximum and minimum values were 59.4°F and 73.6°F respectively.

Sunny, Cloudy and Gloomy days

You can expect various weather conditions during August. Be ready for sunny, cloudy or even gloomy days.

Precipitation Totals in August, in

Precipitation total in August for Seinajoki is 2.7 in. It makes august the most rainy month of the year.

Wind Speed in August, mph

The average wind speed in August is 6.7 mph. This value is relatively stable throughout the year.

Average Sunny Hours Per Day

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Seinajoki in August is 8.4 hours.

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 19.4 °F
February 22.9 °F
December 25.1 °F
The most rainy months:
August 6 days
July 5 days
June 4 days
The most windy months:
March 8 mph
December 7 mph
February 7 mph

Seinajoki on the Weather Map

Finland Resorts:
NAME
Espoo +38
Helsinki +38
Juvaskyla +34
Kemi +30
Koli National Park +32
Kotka +38
Lahti +36
Lappeenranta +36
Oulu +34
Pori +38
Saariselka +14
Savolinna +34
Turku +40
Vaasa +38
Vantaa +38
24 Hours Weather Forecast
Seinajoki
Local time: 09:07
05 dec, friday
1200 38°F
N
4 mph
1500 36°F
NW
2 mph
1800 38°F
NW
2 mph
2100 38°F
N
3 mph
06 dec, saturday
0000 38°F
N
4 mph
0300 36°F
W
4 mph
0600 36°F
W
6 mph
0900 36°F
W
7 mph