Slovenia in December
December is one of Slovenia's weaker months (rank 11 of 12): its 4 destinations average 57/100, led by Kranjska Gora at 84 — 0°C and 9 rainy days — while Piran is warmer at 9°C and scores 49.
#11 of 12 months for Slovenia · 4 destinations · updated September 2026 · climate normals from ERA5 reanalysis
🇸🇮 Slovenia, month by month
57/100 in DecemberWhere in Slovenia in December
Comfort is SeasonMap's 0–100 score; each place is judged through the lens that suits it — beaches on beach weather, ski resorts on snow. "At its best" means December is one of that place's own top three months. Feels-like highs fold in humidity, wind and sun.