Perniö Weather in October
What's the weather like in Perniö (Province of Western Finland) in October 2025?
The climate in Perniö during October can be summarized as cool and reasonably dry.
October is in the fall / autumn in Perniö and is typically the 6th warmest month of the year. Daytime maximum temperatures average around a cool 9°C (47°F), whilst at night 4°C (38°F) is normal.
| Daytime temperature | 8.5°C 47.2°F |
|---|---|
| Nightly temperature | 3.6°C 38.4°F |
| Average temperature | 6°C 42.8°F |
| Daily sunshine | 3 hrs |
| Avg rainfall | 64 mm 2.5 ins |
| Rainy days | 16 days |
| Sea temperature | 10.6°C 51.1°F |
| Humidity | 86% |
| Windspeed | 16.9kph 11 mph |
On average October is the 5th wettest month of the year in Perniö with around 64mm 2.5 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 16 days, although this may vary considerably.
On the flip side this corresponds to an average of 3 hours of sunshine per day.
October temperatures in Perniö
October rainfall
October hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Perniö in October 2025.
Other monthly averages
Best places to visit in October
Perniö weather stats
| Hottest month: | July | 20.1°C 68.2°F |
|---|---|---|
| Driest month: | February | 27mm 1.1ins |
| Sunniest month: | June | 10.6hrs |
| Coldest month: | February | -3.5°C 25.7°F |
| Wettest month: | August | 77mm 3ins |
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