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Finland weather in August 2025
Expect 20°C daytime maximum temperatures in the shade with on average 7 hours of sunshine per day in Finland in August. Check more long-term weather averages for Finland in August before you book your next holiday to Finland in 2025/2026.
- 2020°C max day temperature
- 7 hours of sunshine per day
- 1616 days with some rainfall
- 1111°C min night temperature
- 1616 hours of daylight per day
- 0No heat & humidity
- 7777 mm of monthly rainfall
- 44 (Moderate) UV index
- 1616°C sea temperature
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Recommended for Finland
The August 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.
Top Finland destinations
Below are average maximum temperatures at popular countries, regions and places in Finland in August. Select a holiday destination to see more weather parameters.
All Finland destinations
Metric (°C / mm) | Imperial (°F / inches)
How hot is it in Finland in August?
Daytime temperatures usually reach 20°C in Helsinki, Finland in August, falling to 11°C at night.
How sunny is it in Finland in August?
There are normally 7 hours of bright sunshine each day in Helsinki, Finland in August - that's 42% of daylight hours.
How warm is the sea around Finland in August?
The average sea temperature around Helsinki, Finland in August is 16°C.
Does it rain in Finland in August?
There are usually 16 days with some rain in Helsinki, Finland in August and the average monthly rainfall is 77mm.
Finland August sunrise & sunset times
Browse the sunrise and sunset times for Finland in August 2025. Select a month to view Finland sunrise and sunset times for the next 12 months. The Finland sunrise and sunset times shown below are for Helsinki.
JanFebMarAprMayJunJulAugSepOctNovDec
Date | Sunrise times | Sunset times |
---|---|---|
Friday, 1st August 2025 | 04:00 | 20:51 |
Saturday, 16th August 2025 | 04:36 | 20:11 |
Sunday, 31st August 2025 | 05:12 | 19:27 |
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