Helsinki weather
Ten-year climate averages, month by month
Helsinki in september
Current month averages, based on ten years of records. Read the full guide →
Helsinki is the capital of Finland on the shore of the Gulf of Finland. Christmas markets, sauna culture and short winter days combine into a quintessentially Nordic winter city.
The year in weather
Helsinki weather by month
Pick a month for the full climate guide — temperature, rainfall, sunshine, packing tips and hotel deals for Helsinki.
Places that feel like Helsinki in september
Helsinki weather — FAQ
Q01Which month is warmest in Helsinki?
Which month is warmest in Helsinki?
July runs the highest averages in Helsinki, with typical daytime highs of 21°C (69°F). Plan around midday and consider accommodation with reliable cooling.
Q02Which month is chilliest in Helsinki?
Which month is chilliest in Helsinki?
January brings the lowest averages, with daytime highs near -1°C (30°F). Layer up and expect shorter daylight hours if you plan sightseeing.
Q03When is the rainy season in Helsinki?
When is the rainy season in Helsinki?
August typically records the highest monthly rainfall — around 83mm on average. Plan indoor alternatives and pack proper rain gear if visiting this month.
Q04How would you describe Helsinki's weather?
How would you describe Helsinki's weather?
Helsinki, Finland has mild summers, freezing winters. You can read the detailed month-by-month breakdown on this page.