When to go · Postojna
Postojna in December
Mixed month. Outside the best window (All year). Across Slovenia: Ljubljana's lights and markets; ski season opens.
Key facts
- Verdict
- Mixed
- Temperature
- 5°C (41°F)41°F (5°C) / 0°C (32°F)32°F (0°C)
- average high / low
- Rain days
- 12
- Crowds
- Medium
- Slovenia overall
- Prices
- Medium
- Slovenia overall
Verdict
Outside the best window (All year). Across Slovenia: Ljubljana's lights and markets; ski season opens.
Is another month better than December?
December is rated mixed. These months rate higher:
- AprilGoodOutside the best window (All year). Across Slovenia: Spring in Ljubljana and the Karst; waterfalls full; Vršič may still be shut.
- MayGoodOutside the best window (All year). Across Slovenia: Green valleys, cave visits without queues; high trails still snowy.
- JuneGoodOutside the best window (All year). Across Slovenia: Excellent: long days, open passes, sea warming.
- SeptemberGoodOutside the best window (All year). Across Slovenia: Best month: warm sea, clear mountains, fewer people.
Weather in December
- PostojnaHighs around 5 °C (41 °F), lows around 0 °C (32 °F), rain on about 12 daysHighs around 41 °F (5 °C), lows around 32 °F (0 °C), rain on about 12 days
Festivals and holidays
Dates as our data lists them. Moving holidays (lunar and Islamic calendars, Easter) shift every year: check the date for your year before you build a trip on it.
Christmas, Independence and Unity Day big impact
25–26 Dec · Slovenia
Shops closed; ski resorts busy.
Crowds and prices
- Crowds · Slovenia overall
- Medium
- Prices · Slovenia overall
- Medium
Slovenia overall: Ljubljana's lights and markets; ski season opens.
Compare two months
Weather, crowds and prices for any two months in Postojna, side by side.
Verdict
Dec: Mixed
Apr: Good (better)
Daytime high
Dec: 5 °C (41 °F)41 °F (5 °C)
Apr: 15 °C (59 °F)59 °F (15 °C)
Night low
Dec: 0 °C (32 °F)32 °F (0 °C)
Apr: 7 °C (45 °F)45 °F (7 °C)
Rain days
Dec: 12
Apr: 8 (better)
Crowds
Dec: Medium
Apr: Medium
Prices
Dec: Medium
Apr: Medium
Festivals listed
Dec: 1
Apr: 0
December: Outside the best window (All year). Across Slovenia: Ljubljana's lights and markets; ski season opens.
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 coat, hat and gloves for mornings and evenings
- A rain jacket or umbrella and shoes that dry fast