Best year time to visit Postojna

General weather information about Postojna

Average annual temperature is 10.9 °C

Absolute maximum temperature: 31.2 °C

Absolute minimum temperature: -8.3 °C

Number of sunny days: 142 days

Number of rainy days: 209 days

Number of snow days: 14 days

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* Weather data for Postojna Slovenia is based on climate observations for 2026 year

Postojna air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)10.912.416.417.623.329.130.631.226.924.015.414.4
Average daytime temperature (°C)5.36.110.512.317.322.825.424.621.817.810.07.8
Average temperature (°C)2.41.76.17.313.217.920.219.817.213.76.24.3
Average night temperature (°C)0.2-1.52.13.19.613.415.915.713.610.33.01.4
Absolute minimum temperature (°C)-8.3-8.2-1.8-2.76.511.210.110.210.72.4-3.4-6.1

Postojna monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)9.011.012.014.015.015.015.014.013.011.010.08.0
Daylight mean duration (h)9.110.411.913.514.915.715.314.112.510.99.58.7
Daylight minimum duration (h)8.09.011.012.014.015.014.013.011.010.08.08.0
Sunshine mean duration (h)3.76.97.58.69.912.612.210.910.47.15.94.5
Precipitation (mm)2075214412814398350244102374246186
Sunny days62114106119131815613
Rainy days17516202519221812162316
Snow days821000000012

Postojna - weather forecast by months

Postojna weather in januaryPostojna weather in februaryPostojna weather in marchPostojna weather in aprilPostojna weather in mayPostojna weather in junePostojna weather in julyPostojna weather in augustPostojna weather in septemberPostojna weather in octoberPostojna weather in novemberPostojna weather in december

Best time to visit Postojna:

The best time to visit Postojna during the most sunny months:

  • June — 12.6(h)
  • July — 12.2(h)
  • August — 10.9(h)
  • September — 10.4(h)

Months with the longest average daylight duration in Postojna:

  • June — 15.7(h)
  • July — 15.3(h)

The largest precipitation sum in Postojna is at

  • July — 350(mm)
  • August — 244(mm)
  • October — 374(mm)
  • November — 246(mm)

    • Weather forecast in the closest to Postojna admin centers

    Weather forecast in the closest towns to Postojna

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    Frequently asked questions

    When is the best time to visit Postojna?
    The historical weather data above shows the warmest, sunniest and driest months to help you choose the best time to visit Postojna.
    What is the weather like in Postojna?
    See average temperature, rainfall and daylight hours for Postojna by month in the table above.
    How many sunny days does Postojna have?
    The monthly weather statistics above show sunshine and rainfall patterns for Postojna throughout the year.