ClimateForecastDecemberJanuary >>

Helsinki Climate by Month

The climate in Helsinki is marked by big temperature swings throughout the year. Temperatures range from warm during the warmest months to very cold in the cooler months. It receives a moderate amount of precipitation. Let’s explore the climate details in depth to provide you with a complete overview.

Average day and night temperature

In Helsinki, temperatures differ significantly between summer and winter months. On average, daytime temperatures range from a comfortable 23°C in July to a very cold -1°C in February. Nighttime temperatures can drop, with averages reaching -8°C in February.

The mean minimum and maximum temperatures throughout the year

Precipitation and rainy days

On average, Helsinki receives a reasonable amount of rain/snowfall, with an annual precipitation of 736 mm. The amount of precipitation varies moderately throughout the year. The wettest month, July, sees around 80 mm of rainfall, perfect for those who enjoy a bit of rain now and then. The driest month, March, still receives a respectable 42 mm of snow/rainfall.

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

Sunshine over the year

In Helsinki, summer days are longer and more sunny, with daily sunshine hours peaking at 9.9 hours in June. As the darker season arrives, the brightness of the sun becomes less. December sees a soft sun for only 1 hour.

Monthly hours of sunshine

Daily hours of sunshine

Average water temperature

The mean water temperature over the year in Helsinki ranges from 0°C in January to 15°C in July.

Water temperature over the year

The best time of year to visit Helsinki 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 Helsinki?
    The coldest season / winter is in the following months: January, February and December.
  • Which is the warmest month in Helsinki?
    July has an average maximum temperature of 23°C and is the warmest month of the year.
  • Which is the coldest month in Helsinki?
    The coldest month is February with an average maximum temperature of -1°C.
  • Which is the wettest month in Helsinki?
    July tops the wettest month list with 80 mm of rainfall.
  • Which is the driest month in Helsinki?
    March is the driest month with 42 mm of precipitation.
  • Which is the sunniest month in Helsinki?
    June is the sunniest month with an average of 298 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 Helsinki

    Fri   Dec 06
    0°C | -2°C
    S 14 km/h
    3 mm
    overcast and  chance of rain

    overcast and chance of rain

    Sat   Dec 07
    -1°C | -2°C
    SE 14 km/h
    0.4 mm
    overcast and slight snow

    overcast and slight snow

    Sun   Dec 08
    0°C | -3°C
    SE 11 km/h
    overcast and no rain

    overcast and no rain