Portoroz weather in March 2025

Expect 13°C daytime maximum temperatures in the shade with on average 5 hours of sunshine per day in Portoroz in March. Check more long-term weather averages for Portoroz in March before you book your next holiday to Slovenia in 2025/2026.

  • 13°C maximum daytime temperature in March in Portoroz13
    13°C max day temperature
  • 5 hours of sunshine per day
  • 11 days with some rainfall in March in Portoroz11
    11 days with some rainfall
  • 4°C minimum night-time temperature in March in Portoroz4
    4°C min night temperature
  • 12 hours of daylight per day in March in Portoroz12
    12 hours of daylight per day
  • No heat & humidity in March in Portoroz0
    No heat & humidity
  • 82 mm monthly rainfall in March in Portoroz82
    82 mm of monthly rainfall
  • UV (maximum) index 3 (Moderate) in March in Portoroz3
    3 (Moderate) UV index
  • 10°C sea temperature in March in Portoroz10
    10°C sea temperature

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The March 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 March?

Daytime temperatures usually reach 13°C in Portoroz in March, falling to 4°C at night.

How sunny is it in Portoroz in March?

There are normally 5 hours of bright sunshine each day in Portoroz in March - that's 40% of daylight hours.

Is the sea cold around Portoroz in March?

The average sea temperature around Portoroz in March is 10°C.

Does it rain in Portoroz in March?

There are usually 11 days with some rain in Portoroz in March and the average monthly rainfall is 82mm.

Portoroz March sunrise & sunset times

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


Date Sunrise times Sunset times
Saturday, 1st March 2025 06:44 17:53
Sunday, 16th March 2025 06:16 18:13
Monday, 31st March 2025 05:48 18:33

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