Ljubljana weather in December
December in Ljubljana: cold, rainy, with very humid — one of the weakest months to visit.
#12 of 12 months in Ljubljana · #526 of 604 destinations to visit in December · comfort 45/100 (tier F)
Updated June 2026 · climate normals from ERA5 reanalysis
Ljubljana climate normals — December
| Daytime high | 6°C / 42°F | 🧥 cold |
|---|---|---|
| Nighttime low | 0°C / 32°F | |
| Feels like (high) | 3°C / 37°F | |
| Rainfall | 129 mm / 5.1 in | 🌧 rainy |
| Rainy days | 11 days | |
| Humidity | 90% | 💦 very humid |
| Dew point | 2°C / 35°F | |
| Sunshine | 3.3 h/day | |
| Daylight | 8.7 h | |
| Wind | 10 km/h / 6 mph | |
| Snowfall | 25.2 cm / 9.9 in | |
| Air quality (US AQI) | 56 | 🙂 moderate |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Where is Ljubljana?
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Ljubljana in December — FAQ
- Is December a good time to visit Ljubljana?
- December in Ljubljana: cold, rainy, with very humid — one of the weakest months to visit. It ranks #12 of 12 months for Ljubljana on SeasonMap's comfort score (45/100).
- What is the weather like in Ljubljana in December?
- In December, Ljubljana averages a daily high of 5.5°C and a low of 0°C, with about 129.1 mm of rain over roughly 11 rainy days.
- What is the air quality in Ljubljana in December?
- Ljubljana has a mean US Air Quality Index of about 56 in December.
- Does it snow in Ljubljana in December?
- Ljubljana sees roughly 25.2 cm of snowfall in December.