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Best time to visit Ljubljana: month by month
Short answer
May to September is best, with highs of about 20–29°C for the lakes, the Alps and riverside evenings. December brings Christmas lights and a market along the river; winter is cold and foggy in the city, with lows below freezing.
Month by month
| Month | High | Low | Rainy days | Crowds |
|---|---|---|---|---|
| Jan | 5°C | -3°C | 11 | low |
| Feb | 9°C | -2°C | 5 | low |
| Mar | 12°C | -1°C | 7 | low |
| Apr | 14°C | 2°C | 9 | medium |
| May | 20°C | 9°C | 17 | high |
| Jun | 27°C | 14°C | 9 | high |
| Jul | 29°C | 16°C | 10 | very high |
| Aug | 26°C | 15°C | 11 | very high |
| Sep | 22°C | 11°C | 10 | high |
| Oct | 18°C | 7°C | 9 | medium |
| Nov | 10°C | 2°C | 12 | low |
| Dec | 6°C | -1°C | 12 | high |
Temperatures and rainy days: Copernicus ERA5 averages, 2021–2023. Crowd levels are our estimate.
Season by season
Spring (Mar–May)
Highs rise from about 12°C in March to 20°C in May; May is the rainiest month (about 17 rainy days), but the city and lakes turn green.
Summer (Jun–Aug)
Warm, with highs of about 26–29°C and lows of 14–16°C; thunderstorms are common in the afternoon. Peak season at Bled.
Autumn (Sep–Nov)
September (about 22°C) and October (about 18°C) are lovely, with autumn colours around the lakes; November is grey and wet at about 10°C.
Winter (Dec–Feb)
Cold, with highs of about 5–9°C and lows below 0°C, often foggy; the Christmas market and skiing nearby.
Events worth planning around
- Festive December, with lights and markets along the river (December)
- Ljubljana Festival of music and theatre (summer, July–August)
- Odprta kuhna (Open Kitchen) on Fridays, roughly March to October
- Ljubljana Marathon (October)
When to avoid
January and February are cold, foggy and quiet; July and August bring the biggest crowds at Bled and Vintgar Gorge.
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Common questions
What is the best time to visit Ljubljana?
May to September, with highs of about 20–29°C.
Is Ljubljana worth visiting in December?
Yes: lights and a market along the river make it festive, though it is cold.
When is the Ljubljana Festival?
In summer, mainly July and August.