Siikainen Weather in December
What's the weather like in Siikainen (Province of Western Finland) in December 2025?
The climate in Siikainen during December can be summarized as cold and reasonably dry.
December is in the winter in Siikainen and is typically the 3rd coldest month of the year. Daytime maximum temperatures average around a freezing -2°C (29°F), whilst at night -8°C (18°F) is normal.
| Daytime temperature | -1.9°C 28.7°F |
|---|---|
| Nightly temperature | -7.8°C 18.1°F |
| Average temperature | -4.8°C 23.4°F |
| Daily sunshine | 0.6 hrs |
| Avg rainfall | 41 mm 1.6 ins |
| Rainy days | 20 days |
| Sea temperature | 3.9°C 38.9°F |
| Humidity | 89% |
| Windspeed | 16.2kph 10 mph |
On average December is the 6th driest month of the year in Siikainen with around 41mm 1.6 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 20 days, although this may vary considerably.
On the flip side this corresponds to an average of 0.6 hours of sunshine per day.
December temperatures in Siikainen
December rainfall
December 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 Siikainen in December 2025.
Other monthly averages
Best places to visit in December
Siikainen weather stats
| Hottest month: | July | 20.2°C 68.4°F |
|---|---|---|
| Driest month: | February | 25mm 1ins |
| Sunniest month: | June | 5.1hrs |
| Coldest month: | February | -4.1°C 24.6°F |
| Wettest month: | August | 73mm 2.9ins |
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