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Best time to visit Slovenia: month by month
Short answer
May to September is best for hiking and swimming, with highs of 20-29°C in Ljubljana; June and September are calmer than July and August. Vršič is usually open from May to October. Winter is cold (highs of 5-9°C, frost at night) but good for skiing and Christmas markets.
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 | medium |
| 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 | medium |
Temperatures and rainy days: Copernicus ERA5 averages, 2021–2023. Crowd levels are our estimate.
Season by season
Spring (Mar–May)
Highs rise from 12°C in March to 20°C in May, with May the rainiest month (17 rainy days); mountain passes open by May.
Summer (Jun–Aug)
Warm, with highs of 26-29°C and 9-11 rainy days, often thunderstorms; the best time for lakes and the Soča.
Autumn (Sep–Nov)
September (22°C) and October (18°C) are excellent for hiking; November is cool and wet at 10°C.
Winter (Dec–Feb)
Cold, with highs of 5-9°C and lows below 0°C; skiing at Kranjska Gora and Christmas markets in Ljubljana.
Events worth planning around
- Kurentovanje carnival in Ptuj, February
- Ljubljana Festival, July-August
- Cows' Ball (Kravji bal) in Bohinj, mid-September
- Festive December in Ljubljana, with Christmas markets
- Vitranc Cup ski races in Kranjska Gora, March (check dates)
When to avoid
July and August bring the biggest crowds at Bled, Vintgar and the Soča, and peak prices. November is grey and wet, and Vršič usually closes by then.
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Common questions
What is the best time to visit Slovenia?
June and September for warm weather without peak crowds.
Can I swim in Lake Bled?
Yes, in summer: lakes reach about 20-22°C in July and August.
Is Slovenia worth visiting in winter?
Yes, for skiing in Kranjska Gora and Ljubljana's Christmas markets, though mountain passes close.