Helsinki weather in September 2024

Expect 14°C daytime maximum temperatures in the shade with on average 4 hours of sunshine per day in Helsinki in September. Check more long-term weather averages for Helsinki in September before you book your next holiday to Finland in 2024/2025.

14
14°C max day temperature
4
4 hours of sunshine per day
17
17 days with some rainfall
7
7°C min night temperature
13
13 hours of daylight per day
0
No heat & humidity
73
73 mm of monthly rainfall
3
3 (Moderate) UV index
14
14°C sea temperature

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The September weather guide for Finland (Helsinki) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm) | Imperial (°F / inches)

How warm is it in Helsinki in September?

Daytime temperatures usually reach 14°C in Helsinki in September, falling to 7°C at night.

How sunny is it in Helsinki in September?

There are normally 4 hours of bright sunshine each day in Helsinki in September - that's 33% of daylight hours.

How warm is the sea around Helsinki in September?

The average sea temperature around Helsinki in September is 14°C.

Does it rain in Helsinki in September?

There are usually 17 days with some rain in Helsinki in September and the average monthly rainfall is 73mm.

Helsinki September sunrise & sunset times

Browse the sunrise and sunset times for Helsinki in September 2024. Select a month to view Helsinki sunrise and sunset times for the next 12 months.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Date	Sunrise times	Sunset times
Sunday, 1st September 2024	06:15	20:23
Sunday, 15th September 2024	06:49	19:40
Monday, 30th September 2024	07:24	18:55

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Finland - quick facts
Flight time^✝	3 to 6 hours
Time difference	UK +2 hours
Language(s)	Finnish, Swedish
Currency	Euro
Electricity	C + F plug (230V)
Driving side	Right
Why visit?	Nature
Tourist info	Visit Finland