September · Slovenia
Best time to visit Postojna Cave in SeptemberWeather, crowds & prices
September score
6.2/10
Ranked #6 of 12 months
- Avg temp
- 16°C
- Rainfall
- 220 mm
- Humidity
- 81%
- Sunny days
- 11
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$ · Moderate Cost ($$)
September in Postojna Cave scores 6.2/10 for nature and wildlife travel - an above-average month (#6 of 12). Expect around 16°C, 220 mm of rain, and roughly 11 sunny days this month.
Postojna Cave is a karst cathedral of stalactites-electric train rides deep underground and nearby Predjama Castle cliff views. Best window: late spring through early autumn.
Frequently asked
- What is the weather like in Postojna Cave in September?
- In September, Postojna Cave averages 16°C, 220 mm of rain, and about 11 sunny days. Its climate-comfort score is 6.2/10.
- Is September a good time to visit Postojna Cave?
- September earns a 6.2/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Postojna Cave in September?
- Expect about 220 mm of rain in September. Average humidity is 81% and there are about 11 sunny days.
Curated in Postojna Cave
Tickets & experiences
Things to do in Postojna Cave
Postojna Cave, Slovenia. Live activities and tours from GetYourGuide, matched to this destination.