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Sastamala Climate by Month

The graphs below provide an overview of the climate in Sastamala (Western Finland), Finland. They present long-term patterns and averages of weather conditions over a 30-year period.

Average day and night temperature

The mean minimum and maximum temperatures over the year.

Monthly precipitation

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

Forecast for Sastamala

Tue   Nov 05
9°C | 2°C
W 14 km/h
partly cloudy and no rain

partly cloudy and no rain

Wed   Nov 06
7°C | 4°C
W 11 km/h
broken clouds and no rain

broken clouds and no rain

Thu   Nov 07
7°C | 4°C
W 14 km/h
partly cloudy and no rain

partly cloudy and no rain

The best time of year to visit Sastamala in Finland

During the months of June, 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 Sastamala?
    The coldest season / winter is in the following months: January, February and December.
  • Which is the warmest month in Sastamala?
    July has an average maximum temperature of 23°C and is the warmest month of the year.
  • Which is the coldest month in Sastamala?
    The coldest month is February with an average maximum temperature of -1°C.
  • Which is the wettest month in Sastamala?
    July tops the wettest month list with 89 mm of rainfall.
  • Which is the driest month in Sastamala?
    March is the driest month with 39 mm of precipitation.
  • Which is the sunniest month in Sastamala?
    June is the sunniest month with an average of 276 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.