Weather in Ljubljana in September
Ljubljana, Slovenia averages a high of 20.2°C (68.4°F) and low of 11.3°C (52.3°F) in September, with 11 rain days and 8.9 hours of daily sunshine. Travel score: 72/100 (Good). The best time to visit Ljubljana is July.
High
20°C68°F
Low
11°C52°F
🌧️
11
rain days
☀️
8.9
hrs/day sunshine
💧
80%
humidity
72— Good
September in Ljubljana is mild and occasionally wet — pack an umbrella and enjoy indoor attractions too.
What are the average temperatures in Ljubljana?
How much does it rain in Ljubljana in September?
Ljubljana receives an average of 125.9mm of rainfall across 11 rainy days in September. The annual total is 1155.2mm.
What should I pack for Ljubljana in September?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
🧥
Mix of light and warm layers
Mild temperatures around 20°C
🧴
Sunscreen SPF 30+
9 hours of sunshine daily
🕶️
Sunglasses
Protect your eyes from bright sun
Recommended
🧥
Light rain jacket
Some rainy days expected (11 days)
☔
Umbrella
Be prepared for occasional showers
🎉Visiting Slovenia in September?
Don't miss any public holidays — check before you book!
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Data based on 1994–2024 averages · Last updated: 2024-12-31