Portoroz weather in April 2025

Expect 17°C daytime maximum temperatures in the shade with on average 6 hours of sunshine per day in Portoroz in April. Check more long-term weather averages for Portoroz in April before you book your next holiday to Slovenia in 2025/2026.

  • 17°C maximum daytime temperature in April in Portoroz17
    17°C max day temperature
  • 6 hours of sunshine per day
  • 13 days with some rainfall in April in Portoroz13
    13 days with some rainfall
  • 8°C minimum night-time temperature in April in Portoroz8
    8°C min night temperature
  • 14 hours of daylight per day in April in Portoroz14
    14 hours of daylight per day
  • No heat & humidity in April in Portoroz0
    No heat & humidity
  • 101 mm monthly rainfall in April in Portoroz101
    101 mm of monthly rainfall
  • UV (maximum) index 5 (Moderate) in April in Portoroz5
    5 (Moderate) UV index
  • 12°C sea temperature in April in Portoroz12
    12°C sea temperature

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The April 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 warm is it in Portoroz in April?

Daytime temperatures usually reach 17°C in Portoroz in April, falling to 8°C at night.

How sunny is it in Portoroz in April?

There are normally 6 hours of bright sunshine each day in Portoroz in April - that's 45% of daylight hours.

How warm is the sea around Portoroz in April?

The average sea temperature around Portoroz in April is 12°C.

Does it rain in Portoroz in April?

There are usually 13 days with some rain in Portoroz in April and the average monthly rainfall is 101mm.

Portoroz April sunrise & sunset times

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


Date Sunrise times Sunset times
Tuesday, 1st April 2025 05:46 18:34
Tuesday, 15th April 2025 05:20 18:52
Wednesday, 30th April 2025 04:55 19:11

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