Average monthly water temperature in Helsinki, Finland
On this page you find the mean water temperature over the year in Helsinki (Southern Finland), Finland. Dive into the water temperature trends, highlighting the best times for swimming and other activities.
In Helsinki, water temperatures remain cool throughout the year. The warmest month is July, with an average water temperature of 15°C (59°F).
The coldest water temperature month is January, with an average temperature of 0°C (32°F). This temperature is not very suitable for swimming.
Helsinki Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Helsinki - and find the best time to visit.
Helsinki 3-Day Forecast
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Helsinki climate overview or explore weather in Finland.
Popular this month
Where to go in September - average daytime high across popular destinations.
Helsinki
16°C (61°F) Turku17°C (63°F) Tampere
15°C (59°F) Vuokatti
13°C (55°F) Rovaniemi13°C (55°F) Äkäslompolo12°C (54°F) Ruka12°C (54°F) Levi12°C (54°F) 
Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.
Air Guitar World Championship Finland
This is something you might want to add to your bucket list. August is also the perfect time to visit Finland. The days are long and the temperature is amazing.
Sleeping in a glass iglo in Finland
Sleeping in a glass igloo with the Northern Lights shining above you. The most famous place is in the Iglo village in Kakslattaunen. The idea is amazing and definitely something to add to your bucket list.
See the northern lights
The northern lights, polar light or Aarora Borealis is a true spectacle of nature! Green, sometimes purple, red and yellow streaks of light colors the dark skies.