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Seinäjoki Climate by Month

Seinäjoki experiences great temperature shifts. The city's weather can transition from warm days to very cold weather. It receives a reasonable amount of rain/snowfall. Now, let’s break down all the climate details for a clearer picture.

Average day and night temperature

The climate in Seinäjoki is known for significant temperature differences throughout the year, making the weather dynamic. Average daytime temperatures reach a comfortable 22°C in July. In February, the coolest month of the year, temperatures drop to a very cold -2°C. At night, expect cooler temperatures, averaging -10°C during this month.

The mean minimum and maximum temperatures throughout the year

Precipitation and rainy days

Generally, Seinäjoki receives mid-range precipitation levels, with 678 mm annually. Seinäjoki can be quite wet during July, receiving approximately 91 mm of precipitation over 14 rainy days. In contrast March, experiences much drier conditions, with 35 mm of snow/rainfall, spread across 15 snowy/rainy days.

The mean monthly precipitation over the year, including rain, hail and snow

Sunshine over the year

Seinäjoki can be enjoyed more throughout the sunniest month of June under a blue sky, with approximately 10.2 hours of sunshine daily. In contrast, the city experiences much darker days in December, with only 0.6 hours of sunlight per day.

Monthly hours of sunshine

Data from: Vaasa, Finland (70 KM, 43 Miles).

Daily hours of sunshine

Data from: Vaasa, Finland (70 KM, 43 Miles).

The best time of year to visit Seinäjoki in Finland

During the months of July and August you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.

Other facts from our historical weather data:
  • When is winter in Seinäjoki?
    The coldest season / winter is in the following months: January, February, November and December.
  • Which is the warmest month in Seinäjoki?
    July has an average maximum temperature of 22°C and is the warmest month of the year.
  • Which is the coldest month in Seinäjoki?
    The coldest month is February with an average maximum temperature of -2°C.
  • Which is the wettest month in Seinäjoki?
    July tops the wettest month list with 91 mm of rainfall.
  • Which is the driest month in Seinäjoki?
    March is the driest month with 35 mm of precipitation.
  • Which is the sunniest month in Seinäjoki?
    June is the sunniest month with an average of 305 hours of sunshine.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.

    Forecast for Seinäjoki

    Thu   Nov 21
    0°C | -7°C
    NE 32 km/h
    30 mm
    overcast and heavy snow

    overcast and heavy snow

    Fri   Nov 22
    0°C | -5°C
    NE 11 km/h
    11 mm
    overcast and heavy snow

    overcast and heavy snow

    Sat   Nov 23
    -4°C | -8°C
    SW 14 km/h
    broken clouds and no rain

    broken clouds and no rain