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Oulu weather in September 2025
Expect 12°C daytime maximum temperatures in the shade with on average 4 hours of sunshine per day in Oulu in September. Check more long-term weather averages for Oulu in September before you book your next holiday to Finland in 2025/2026.
- 1212°C max day temperature
- 4 hours of sunshine per day
- 1616 days with some rainfall
- 55°C min night temperature
- 1313 hours of daylight per day
- 0No heat & humidity
- 5353 mm of monthly rainfall
- 22 (Low) UV index
- 1111°C sea temperature
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Recommended for Finland
The September weather guide for Finland (Oulu) 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 Oulu in September?
Daytime temperatures usually reach 12°C in Oulu in September, falling to 5°C at night.
How sunny is it in Oulu in September?
There are normally 4 hours of bright sunshine each day in Oulu in September - that's 31% of daylight hours.
Is the sea cold around Oulu in September?
The average sea temperature around Oulu in September is 11°C.
Does it rain in Oulu in September?
There are usually 16 days with some rain in Oulu in September and the average monthly rainfall is 53mm.
Oulu September sunrise & sunset times
Browse the sunrise and sunset times for Oulu in September 2025. Select a month to view Oulu sunrise and sunset times for the next 12 months.
JanFebMarAprMayJunJulAugSepOctNovDec
Date | Sunrise times | Sunset times |
---|---|---|
Monday, 1st September 2025 | 04:57 | 19:37 |
Monday, 15th September 2025 | 05:40 | 18:45 |
Tuesday, 30th September 2025 | 06:25 | 17:49 |
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