Ljubljana Weather in December
What's the weather like in Ljubljana (Ljubljana) in December 2025?
The climate in Ljubljana during December can be summarized as cool and a little damp.
December is in the winter in Ljubljana and is typically the 2nd coldest month of the year. Daytime maximum temperatures average around a cold 3°C (38°F), whilst at night -3°C (27°F) is normal.
| Daytime temperature | 3.1°C 37.5°F |
|---|---|
| Nightly temperature | -2.7°C 27.2°F |
| Average temperature | 0.2°C 32.4°F |
| Daily sunshine | 2 hrs |
| Avg rainfall | 96 mm 3.8 ins |
| Rainy days | 12 days |
| Sea temperature | 13.7°C 56.7°F |
| Humidity | 87% |
| Windspeed | 5.4kph 3 mph |
On average December is the 4th driest month of the year in Ljubljana with around 96mm 3.8 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 12 days, although this may vary considerably.
On the flip side this corresponds to an average of 2 hours of sunshine per day.
December temperatures in Ljubljana
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 Ljubljana in December 2025.
Other monthly averages
Best places to visit in December
Ljubljana weather stats
| Hottest month: | July | 25.6°C 78.1°F |
|---|---|---|
| Driest month: | February | 76mm 3ins |
| Sunniest month: | July | 9.2hrs |
| Coldest month: | January | 2.1°C 35.8°F |
| Wettest month: | June | 152mm 6ins |
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