Portoroz weather in October 2025

Expect 19°C daytime maximum temperatures in the shade with on average 5 hours of sunshine per day in Portoroz in October. Check more long-term weather averages for Portoroz in October before you book your next holiday to Slovenia in 2025/2026.

  • 19°C maximum daytime temperature in October in Portoroz19
    19°C max day temperature
  • 5 hours of sunshine per day
  • 11 days with some rainfall in October in Portoroz11
    11 days with some rainfall
  • 10°C minimum night-time temperature in October in Portoroz10
    10°C min night temperature
  • 11 hours of daylight per day in October in Portoroz11
    11 hours of daylight per day
  • No heat & humidity in October in Portoroz0
    No heat & humidity
  • 110 mm monthly rainfall in October in Portoroz110
    110 mm of monthly rainfall
  • UV (maximum) index 3 (Moderate) in October in Portoroz3
    3 (Moderate) UV index
  • 19°C sea temperature in October in Portoroz19
    19°C sea temperature

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The October weather guide for Slovenia (Portoroz) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

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More about Slovenia

How hot is it in Portoroz in October?

Daytime temperatures usually reach 19°C in Portoroz in October, falling to 10°C at night.

How sunny is it in Portoroz in October?

There are normally 5 hours of bright sunshine each day in Portoroz in October - that's 48% of daylight hours.

How warm is the sea around Portoroz in October?

The average sea temperature around Portoroz in October is 19°C.

Does it rain in Portoroz in October?

There are usually 11 days with some rain in Portoroz in October and the average monthly rainfall is 110mm.

Portoroz October sunrise & sunset times

Browse the sunrise and sunset times for Portoroz in October 2025. Select a month to view Portoroz sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Wednesday, 1st October 2025 06:04 17:46
Thursday, 16th October 2025 06:23 17:18
Friday, 31st October 2025 06:44 16:54

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