Helsinki Weather and Climate: A Comprehensive Guide
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 maximum day and minimum 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 average lows reaching -8°C in February. Check out our detailed temperature page for more information.Temperature ranges by month
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
The average number of days each month with precipitation
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 per average day. Visit our detailed sunshine hours page for more information.Monthly hours of sunshine
Daily hours of sunshine
Average water temperature
The mean water temperature over the year ranges from 0°C in January to 15°C in July.
Water temperature over the year
Average humidity
The relative humidity is high throughout the year in Helsinki.
The city experiences its highest humidity in November, reaching 89%. In May, the humidity drops to its lowest level at 65%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Average wind speed
The mean wind speed varies between 3 m/s and 4 m/s throughout the year. It is lowest in February, May, June, July, August and September and highest during January, March, April, October, November and December.
The mean monthly wind speed over the year (meters per second)
overcast and heavy snow almost clear and no rain overcast and no rainForecast for Helsinki
7 m/s
7 m/s
7 m/s
Select a Month of Interest
Check the conditions for any month of 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:
The coldest season / winter is in the following months: January, February and December.
July has an average maximum temperature of 23°C and is the warmest month of the year.
The coldest month is February with an average maximum temperature of -1°C.
July tops the wettest month list with 80 mm of rainfall.
March is the driest month with 42 mm of precipitation.
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.
