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Helsinki weather in September 2021
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- 14°C max day temperature
14 - 4 hours of sunshine per day
- 17 days with some rainfall
17 - 7°C min night temperature
7 - 13 hours of daylight per day
13 - No heat & humidity
0 - 73 mm of monthly rainfall
73 - 3 (Moderate) UV index
3 - 14°C sea temperature
14
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The September weather guide for Helsinki, Finland 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.
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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 sunrise & sunset times for September 2021
Browse the sunrise & sunset times for Helsinki in September 2021. Select a month to view Helsinki sunrise & sunset times for the next twelve months.
JanFebMarAprMayJunJulAugSepOctNovDec
| Date | Sunrise times | Sunset times |
|---|---|---|
| Wednesday, 1st September 2021 | 06:15 | 20:24 |
| Wednesday, 15th September 2021 | 06:48 | 19:41 |
| Thursday, 30th September 2021 | 07:24 | 18:55 |
- Check out the low fares on flights to Finland
- Finnair flights connect in Helsinki Airport, Finland
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Metric (°C / mm) | Imperial (°F / inches)
Where is warm in Finland in September for 2021/2022?
Below are average maximum temperatures at popular destinations in Finland in September. Select a destination to see more weather parameters.
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