When to go · Postojna
Postojna in May
Good month. Outside the best window (All year). Across Slovenia: Green valleys, cave visits without queues; high trails still snowy.
Key facts
- Verdict
- Good
- Temperature
- 20°C (68°F)68°F (20°C) / 12°C (54°F)54°F (12°C)
- average high / low
- Rain days
- 7
- Crowds
- Medium
- Slovenia overall
- Prices
- Medium
- Slovenia overall
Verdict
Outside the best window (All year). Across Slovenia: Green valleys, cave visits without queues; high trails still snowy.
Is another month better than May?
No other month rates higher than May for Postojna in this guide.
Weather in May
- PostojnaHighs around 20 °C (68 °F), lows around 12 °C (54 °F), rain on about 7 daysHighs around 68 °F (20 °C), lows around 54 °F (12 °C), rain on about 7 days
Crowds and prices
- Crowds · Slovenia overall
- Medium
- Prices · Slovenia overall
- Medium
Slovenia overall: Green valleys, cave visits without queues; high trails still snowy.
Compare two months
Weather, crowds and prices for any two months in Postojna, side by side.
Verdict
May: Good
Apr: Good
Daytime high
May: 20 °C (68 °F)68 °F (20 °C)
Apr: 15 °C (59 °F)59 °F (15 °C)
Night low
May: 12 °C (54 °F)54 °F (12 °C)
Apr: 7 °C (45 °F)45 °F (7 °C)
Rain days
May: 7 (better)
Apr: 8
Crowds
May: Medium
Apr: Medium
Prices
May: Medium
Apr: Medium
Festivals listed
May: 0
Apr: 0
May: Outside the best window (All year). Across Slovenia: Green valleys, cave visits without queues; high trails still snowy.
April: Outside the best window (All year). Across Slovenia: Spring in Ljubljana and the Karst; waterfalls full; Vršič may still be shut.
Postojna: figures are long-term averages from this guide, not a forecast.
What to pack
- A warm layer for the evenings