Ljubljana in September
Late summer, more rain
By Daan · Last reviewed October 2026
The short answer
September is one of the best months to visit Ljubljana.
September is calmer and mild, though it is the wettest month.
September in detail
What September actually feels like
- Weather
- 12–22°C
- Mild, with heavy rain spells.
- Crowds
- Moderate
- Prices
- €€
- Good value.
+Calmer streets.
–The wettest month.
My tip for September
Keep a museum day free for rain.
- Food
- Walking
How September compares
Against the other eleven months
2nd of 12 overall in Ljubljana, 5th for weather, 7th for space, 7th for value. The emptiest month is January; the best value is January.
See all twelve months for LjubljanaPlan around
What’s on in Ljubljana in September
- Autumn rain
- The wettest months. Plan flexible days for hikes and lake trips.
September–November
Not set on September?
Even stronger months in Ljubljana
Also good in September
Weather
Weather in Ljubljana in September
In September Ljubljana averages a high of 22°C (72°F) and a low of 12°C (54°F), with about 160 mm of rain or snow over 13 wet days. The warmest month is July (around 28°C) and the coolest is January (around 4°C); the wettest month is September.
- Average high
- 22°C
- 72°F
- Average low
- 12°C
- 54°F
- Precipitation
- 160 mm
- Wet days
- 13
Climate data: Slovenian Environment Agency (ARSO), Ljubljana Bežigrad 1991–2020. Temperatures are averages of daily highs and lows.
Quick answers
Ljubljana in September: the questions people ask
- Is September a good time to visit Ljubljana?
- September is one of the best months to visit Ljubljana. It ranks 2 of 12 months in Ljubljana overall (5 for weather, 7 for space, 7 for value). The main upside: Calmer streets. The main downside: The wettest month.
- What is the weather like in Ljubljana in September?
- Average highs are around 22°C and lows around 12°C. Expect about 160 mm of rain or snow over roughly 13 wet days. Mild, with heavy rain spells. For comparison, the warmest month is July (around 28°C) and the coolest is January (around 4°C).
- Is Ljubljana crowded in September?
- Crowds are moderate. Moderate. The quietest month is January.
- How expensive is Ljubljana in September?
- Prices are at level 2 of 5 (€€). Good value. The best-value month is January.
- When is the best time to visit Ljubljana?
- In the CrowdFreeViews month scores, June is the best month overall (September ranks 2 of 12). The quietest month is January and the best value is January.