SeasonScore
Ljubljana, Slovenia
Photo: Wikimedia Commons · CC BY-SA 2.0

Slovenia

Ljubljana in December

🧥 Winter

Cold and some showers. Watch for hazy air.

🎒 Pack: winter coat, gloves & hat · compact umbrella or rain jacket · N95 mask for hazy days

Best months: Jun (9.2), Jul (9.2), May (9.1)

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Why December scores 6.7What goes into the score

How it works
🌡️ 4° / -1°C🌧️ 104 mm💧 dew pt 0°🍃 PM2.5 51
  • Weather comfort6.2
    • !Cold (4°C highs / -1°C lows)
    • ✓Comfortable humidity (dew point 0°C)
    • !Wet: ~104 mm rain, ~4 heavy-rain days
  • Air quality3.9
    • !Unhealthy (PM2.5 ~51 µg/m³)
  • Seasonal hazards10.0
    • ·No notable seasonal hazards
  • Safety baseline8.5
    • ·Normal precautions
Compare monthsPut December side by side with another month
DecJun
Score6.7 Good9.2 Excellent
Season🧥 Winter☀️ Summer
High / low4° / -1°26° / 14°
Rain104 mm125 mm
Humiditydew pt 0°dew pt 14°
PM2.551 µg/m³8 µg/m³

Typical-month data: NASA POWER (MERRA-2 reanalysis) 2015–2024 (modelled, not a forecast). Temperatures: Ljubljana weather-station normals. Rainfall: Ljubljana weather-station normals (national met service).

Holidays & crowdsDecember 2026

Long weekend

There's at least one long weekend. Domestic travel picks up and popular spots get busier over those days.

  • Christmas Day 25–27 Dec · 3 days off in a row

National holidays only; regional holidays and school breaks aren't included. Source: holidays (open-source public-holiday calendar).

Nature calendarBlossoms, leaves & seasons in Ljubljana

  • Snowy daysIn DecemberTypical dates
    Snow likely Nov–Apr (most in Jan: ~15 days)

    Average number of days with snowfall at Ljubljana.

    Source: Ljubljana weather-station normals (national weather service, via Wikipedia climate table)

Explore LjubljanaEvents, sights, food & souvenirs

Check event dates locally

Slovenia's compact, largely car-free capital on the Ljubljanica River, visited for its castle, riverside cafes and Plečnik architecture.

Events in December
Festive DecemberDate variesUsually late November to early January

Christmas lights and markets along the river.

Why go: The city is lively despite the cold.

Where: Old town and riverbanks

Coming up later

Ljubljana FestivalDate variesUsually late June to early September

Concerts, opera and dance through the summer.

Why go: Many open-air performances; book popular ones ahead.

Where: Congress Square and venues around the city

Ljubljana MarathonDate variesUsually late October

An annual marathon and shorter races through the city.

Why go: Central roads close on race day.

Where: City centre

Plan this tripTickets, data and transfers for Ljubljana

Airport transfer Kiwitaxi

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