Seinäjoki monthly weather averages

Average daytime temperature

The bar chart below shows the average monthly peak daytime temperatures at Seinäjoki

Seinäjoki average temperature chart (Celsius) Seinäjoki average temperature chart (Fahrenheit)
Average monthly temperatures in Seinäjoki (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C -5.6 -5 -0.2 5.8 13.9 18.9 20.5 18.3 12.6 6.8 0.8 -3.3
°F 22 23 31.7 42.5 57 66.1 69 65 54.6 44.2 33.4 26

Please note: these are the average peak daytime temperatures (usually around mid-afternoon) so do not show daytime / night highs and lows. To see the daily range of temperatures have a look at the temperature max / min chart below.

Average rainfall & rainy days

The graph below shows the average rainfall and number of rainy days per month.

Seinäjoki monthly rainfall chart (mm) Seinäjoki monthly rainfall chart (inches)
Average monthly rainfall in Seinäjoki (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 34 23 26 30 35 46 69 72 63 48 47 37
inches 1.3 0.9 1 1.2 1.4 1.8 2.7 2.8 2.5 1.9 1.8 1.5
Rainy days 21 16 15 13 12 12 14 16 17 17 20 20

Average annual rainfall in Seinäjoki: 613.6mm (241.6 inches)

Average daily sunshine

The bar chart below shows the average daily sunshine hours in Seinäjoki

Seinäjoki average daily sunshine chart
Average daily sunshine Seinäjoki
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 0.5 1.5 3.2 5.3 3.7 0 4 6.3 3.8 2.4 1 0.5

Day / night temperatures

The graph below shows the daily range of temperatures for each month.

Seinäjoki average minimum / maximum temperatures (Celsius) Seinäjoki average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Seinäjoki (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -12.6 -12.6 -8.5 -2.5 2.9 7.8 10 8.9 4.9 0.9 -4.3 -9.9
Max °C -5.4 -4.8 0 6.1 14.2 19.2 20.8 18.6 12.8 6.9 0.9 -3.2
Min °F 9.3 9.3 16.8 27.6 37.1 46 50 47.9 40.7 33.6 24.3 14.3
Max °F 15.8 16.3 24.4 35.2 47.3 56.3 59.7 56.7 47.8 39 28.9 20.3

Sea temperature

The graph below shows the average sea temperature.

Seinäjoki average sea temperature chart (Celsius) Seinäjoki average sea temperature chart (Fahrenheit)
Average sea temperature around Seinäjoki in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 1.7 0.5 0.3 1.1 3.5 8.3 13.9 15.4 12.6 8.7 5.4 3.2
°F 35 32.9 32.6 34 38.2 46.9 57.1 59.8 54.6 47.7 41.8 37.7

Wind speed

The graph below shows the average wind speed.

Seinäjoki average winspeed by month (km/h) Seinäjoki average winspeed by month (mph)
Average wind speed in Seinäjoki (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 13 13 13 13 13 13 12 12 13 14 14 14
mph 8 8 8 8 8 8 7 7 8 9 9 9

A monthly average windspeed of over 16km/h or 10mph suggests a location is fairly windy.

Relative humidity

The graph below shows the average relative humidity.

Seinäjoki relative humidity averages
Average relative humidity in Seinäjoki
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
88% 87% 82% 75% 68% 67% 73% 80% 86% 88% 91% 90%

Other monthly averages

UV index Best time to go?

Seinäjoki weather stats

Seinäjoki weather statistics
Hottest month: July 20.5°C 68.9°F
Driest month: February 23mm 0.9ins
Sunniest month: June 0hrs
Coldest month: January -5.6°C 21.9°F
Wettest month: August 72mm 2.8ins
Warmest sea: August 15.4°C 59.7°F
Map showing location of Seinäjoki (62.8, 22.83333) Seinäjoki map pin © Google

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