Ljubljana Weather in December
December in Ljubljana brings low temperatures around 5°C (41°F) during the day, dropping to -2°C (28°F) at night, with quite a bit of snow/rainfall expected, averaging around 92 mm (3.6 in) for the month.
Rainfall in Ljubljana in December
Historically, approximately 13 days this month are expected to have snow/rain, averaging 92 mm (3.6 in). Rainfall intensity is on the higher side this month. Expect more substantial showers rather than light, passing rain.
Temperature in Ljubljana in December
Daytime highs in Ljubljana in December reach 5°C (41°F), with nights around -2°C (28°F). December is typically considered a winter month. It stays cool throughout the day, so warm layers are a good idea from morning to evening. At -2°C (28°F) overnight, frost and ice are likely outside. Indoors, consider packing an extra blanket if you're unsure about the heating.
Sunshine in Ljubljana in December
The city usually sees around 57 hours of sunlight, indicating fewer sunny days.
Wind Speed in Ljubljana in December
Average wind speeds reach 3 m/s (6 knots) in December, creating light breezes that feel pleasant throughout the day. Some days are calmer, while others bring slightly more active breezes.December in Ljubljana has its charm, but if you're looking for destinations with pleasant temperatures and sunny skies, our weather planner can help you explore other options in the world.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Slovenia, check out our Ljubljana's climate page.
Ljubljana Temperature in December
Min Temperature
-2°C (28°F)
Max Temperature
5°C (41°F)
Chance of Rain
42%
Precipitation
92 mm (3.6 in)
Rainy days
13 days
Humidity
87%
Windspeed
3 m/s (6 knots)
Sunshine
57 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Ljubljana typically stay consistent throughout December, with daily highs averaging around 5°C (41°F). Nights are very cold, with lows typically ranging from -6°C (21°F) to -2°C (28°F).
Average temperatures in December
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in December
Historical weather for Ljubljana in December
Browse day-by-day weather records for Ljubljana spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Ljubljana historical weather extremes in December
According to our 49 years of weather records for Ljubljana, the following extremes were recorded between 1976 and 2025.
- The warmest day in December was on December 1, 2023, with a maximum of 18°C (64°F).
Best Places in Slovenia in December
Find out more about the weather in Slovenia and which places have the best travel conditions in this month. See all of Slovenia in December →
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What to Wear in Ljubljana in December
Cold weather calls for smart layering in December. A thermal base layer makes a huge difference in staying warm. Add a wool sweater or fleece, then a wind-resistant outer jacket. Prepare for significant rainfall with proper waterproof clothing and shoes. With limited sunshine expected, sunglasses aren't a priority for packing.What To Do in Ljubljana in December
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Slovenia, check out our Ljubljana's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed
See the full Ljubljana climate overview or explore weather in Slovenia.
