Portoroz weather in July 2025

Expect 28°C daytime maximum temperatures in the shade with on average 9 hours of sunshine per day in Portoroz in July. Check more long-term weather averages for Portoroz in July before you book your next holiday to Slovenia in 2025/2026.

  • 28°C maximum daytime temperature in July in Portoroz28
    28°C max day temperature
  • 9 hours of sunshine per day
  • 11 days with some rainfall in July in Portoroz11
    11 days with some rainfall
  • 18°C minimum night-time temperature in July in Portoroz18
    18°C min night temperature
  • 15 hours of daylight per day in July in Portoroz15
    15 hours of daylight per day
  • Low heat & humidity in July in PortorozL
    Low heat & humidity
  • 80 mm monthly rainfall in July in Portoroz80
    80 mm of monthly rainfall
  • UV (maximum) index 8 (Very High) in July in Portoroz8
    8 (Very High) UV index
  • 24°C sea temperature in July in Portoroz24
    24°C sea temperature

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The July 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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How hot is it in Portoroz in July?

Daytime temperatures usually reach 28°C in Portoroz in July with low heat and humidity, falling to 18°C at night.

How sunny is it in Portoroz in July?

There are normally 9 hours of bright sunshine each day in Portoroz in July - that's 60% of daylight hours.

How warm is the sea around Portoroz in July?

The average sea temperature around Portoroz in July is 24°C.

Does it rain in Portoroz in July?

There are usually 11 days with some rain in Portoroz in July and the average monthly rainfall is 80mm.

Portoroz July sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Tuesday, 1st July 2025 04:21 19:58
Wednesday, 16th July 2025 04:32 19:51
Thursday, 31st July 2025 04:48 19:35

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