Weather in Slovenia in December
December in Slovenia is deep winter. Days are short. The outdoor plan is a window in the middle of the day or not at all.
A country pin in December is a warning: one region of Slovenia will not match another. Use a city page if you already know where you are going. Compared with July and January, December sits in the middle of Slovenia's year.
- Average temp
- 2°C
-1–4°C
- Rainfall
- 105 mm
Showers likely
- Sunshine
- 1.7 h
hours per day
What to expect
Daytime
Days in Slovenia in December are about getting between indoor places. The cold is the story. Gloves are not a fashion choice.
A clear spell is for a short walk, then back in. Do not plan a long outdoor day as the default. Night falls early and the cold deepens with it.
Rain
Mixed skies in Slovenia in December. Dry days and wet days share the month. Outdoor plans need a backup, not a cancellation policy.
Pack a shell you will actually carry. The monthly table is the place for totals. This is the feel: usable, interrupted.
Evening
Evenings are cooler. A layer helps after sunset.
What to pack
Rain jacket
A layer for cooler evenings
Where to stay in Slovenia
Featured stays on trip1. Dates are a starting point for December.
Travel guides for Slovenia
What to read before you book.
Average weather in Slovenia
TemperatureRainfall
Similar weather in December
Other destinations whose December averages sit close to this one.
Check another month
This is the month you are reading. Change either side to look at another.
FAQs about Slovenia
Climate averages for Slovenia, 1991–2020.
The best time to visit Slovenia is between April and September, the most comfortable stretch of the year on these averages.
July is the hottest month, with an average around 22°C.
September is the wettest month, with about 159 mm of rain.
No. These are 1991–2020 climate normals from Meteostat, not a live forecast. Actual weather in any given week can differ.
