Daytime highs, nighttime lows and the warmest cities across Finland this September.
Finland, experiences maximum daytime temperatures in September ranging from 8°C (46°F) in Kilpisjärvi to 17°C (63°F) in Turku. Nighttime temperatures generally drop to 8°C (46°F) in Turku and 2°C (36°F) in Kilpisjärvi.
To get a sense of September's typical temperatures in the key spots of Finland, explore the map below. Click on a point for an in-depth look.
Check the conditions for any month of the year.
Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across Finland.
Marker color shows the average daytime high temperature in September: blue is cold, red is hot.
Daytime temperatures in Helsinki typically peak at 16°C (61°F) in September, putting it in the moderate range.
Nighttime temperatures in Helsinki typically drop to around 8°C (46°F) in September.
Based on our systematic data collection, Turku has been identified as the city with the highest average temperatures. The daytime temperature usually hovers around 17°C (63°F), while at night it goes down to an approximate temperature of 8°C (46°F).
Our database indicates that in September, Kilpisjärvi is the city with the coolest temperatures in Finland. You can expect daytime highs of 8°C (46°F) and nighttime lows close to 2°C (36°F).
Across Finland, sunshine in September ranges from overcast in Ivalo (52 hours) to moderately sunny in Turku (154 hours).
The water temperature averages approximately 13°C (55°F) in Helsinki this month, generally too cold for comfortable swimming.
We have much more information about the climate in Finland.
Weather and climate has detailed information for every country in the world. Are you going to Finland? Get detailed historical weather averages for many cities in Finland.
Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.
Need travel inspiration? Check out our bucket list articles and be inspired.
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