Semily Weather in December
What's the weather like in Semily (Liberecký) in December 2025?
The climate in Semily during December can be summarized as cold and a little damp.
December is in the winter in Semily and is typically the 3rd coldest month of the year. Daytime maximum temperatures average around a freezing 1°C (34°F), whilst at night -4°C (25°F) is normal.
| Daytime temperature | 1.1°C 34°F |
|---|---|
| Nightly temperature | -3.9°C 25°F |
| Average temperature | -1.4°C 29.5°F |
| Daily sunshine | 1.8 hrs |
| Avg rainfall | 84 mm 3.3 ins |
| Rainy days | 16 days |
| Sea temperature | 9.3°C 48.7°F |
| Humidity | 89% |
| Windspeed | 23.8kph 15 mph |
On average December is the 4th wettest month of the year in Semily with around 84mm 3.3 inches of rain making it a a little damp 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 1.8 hours of sunshine per day.
December temperatures in Semily
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 Semily in December 2025.
Other monthly averages
Best places to visit in December
Semily weather stats
| Hottest month: | July | 20.9°C 69.6°F |
|---|---|---|
| Driest month: | April | 54mm 2.1ins |
| Sunniest month: | August | 7hrs |
| Coldest month: | January | -0.6°C 30.9°F |
| Wettest month: | July | 90mm 3.5ins |
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