Ljubljana in December
In December, Ljubljana averages 6°C (42°F) during the day and -1°C (30°F) at night, with around 9 days of rain (98 mm total).
ShoulderConditions are cold — pack winter layers. Occasional showers are likely but won't dominate.
December in Ljubljana is outside the typical sweet spot for sightseeing weather. It can still be a great time to visit if you have specific reasons (festivals, off-season pricing, etc.).
How December compares to the rest of the year in Ljubljana
December is one of the coolest months in Ljubljana (11th of 12) and one of the driest months (12th of 12). Daytime temperature runs 10°C below the annual average (16°C). December runs 5°C cooler than November (10°C) and cools 1°C in January (5°C).
December sunrise & sunset in Ljubljana
Times shown for Ljubljana local time (Europe/Ljubljana), calculated for the 15th of December. They shift by a few minutes day to day across the month.
Photography light in Ljubljana — December
Golden-hour and blue-hour windows for the 15th of December, in Ljubljana's local time. Use these for soft warm light (golden) or cool architectural twilight (blue).
📅 When to book — Ljubljana in December
Travel writers usually only tell you when to go. Here's when to book flights and lodging for the best mix of price and availability, based on December's tier (Shoulder) and Ljubljana's popularity.
Crowds & pricing — December in Ljubljana
Ljubljana is in a shoulder season month — fewer crowds, slightly lower prices, and a calmer atmosphere than peak weeks. Most major sights stay open with normal hours, though a handful of seasonal restaurants or boat trips may run reduced schedules. Many regulars consider these months the best time to visit because you trade a small amount of weather reliability for a much more pleasant on-the-ground experience.
Why this tier: Christmas / New Year travel surge
Sun & mosquito risk — December in Ljubljana
UV is a clear-sky sea-level estimate — clouds, altitude, and reflective surfaces (snow, water) shift it ±30%. Mosquito risk is climate-derived only; for current disease advisories (dengue, malaria, zika) check the CDC or WHO travel pages before your trip.
🌬 Frosty nights — Ljubljana in December
Gear: Cold nights, milder days. Light insulated jacket fine for daytime, real coat for after dark.
Ljubljana in other months
| Month | Avg high | Avg low | Rainfall | Rain days | Snow days |
|---|---|---|---|---|---|
| January | 5°C / 41°F | -3°C / 27°F | 84 mm | 9 | — |
| February | 8°C / 46°F | -2°C / 29°F | 100 mm | 10 | — |
| March | 12°C / 53°F | 1°C / 33°F | 64 mm | 9 | — |
| April | 16°C / 61°F | 5°C / 40°F | 84 mm | 10 | — |
| May | 19°C / 67°F | 9°C / 48°F | 134 mm | 16 | — |
| June | 25°C / 77°F | 14°C / 57°F | 91 mm | 12 | — |
| July | 27°C / 81°F | 16°C / 61°F | 101 mm | 12 | — |
| August | 26°C / 80°F | 16°C / 60°F | 100 mm | 10 | — |
| September | 21°C / 70°F | 11°C / 53°F | 143 mm | 12 | — |
| October | 17°C / 62°F | 7°C / 45°F | 110 mm | 10 | — |
| November | 10°C / 51°F | 3°C / 38°F | 140 mm | 11 | — |
| December | 6°C / 42°F | -1°C / 30°F | 98 mm | 9 | — |
Other cities with similar December weather
🌍 See the full ranked list of climate twins for Ljubljana in December →
Frequently asked questions
How hot is Ljubljana in December?
In December, Ljubljana averages a high of 6°C (42°F) and a low of -1°C (30°F) — generally cold.
Does it rain a lot in Ljubljana in December?
December sees occasional rain in Ljubljana, with about 9 rainy days on average.
Is December a good time to visit Ljubljana?
December is cold. It suits travelers who are comfortable with cold weather; check the month-by-month ranking to compare it against the rest of the year.
What should I pack for Ljubljana in December?
Pack heavy winter layers, a coat, hat and gloves. See the full December packing list for Ljubljana for a complete, climate-based checklist.
Check the live 10-day forecast and sunrise/sunset.