Portoroz weather in June 2025

Expect 77°F daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in Portoroz in June. Check more long-term weather averages for Portoroz in June before you book your next holiday to Slovenia in 2025/2026.

77
77°F max day temperature
8
8 hours of sunshine per day
14
14 days with some rainfall
59
59°F min night temperature
16
16 hours of daylight per day
0
No heat & humidity
4.5
4.5 inches of monthly rainfall
8
8 (Very High) UV index
72
72°F sea temperature

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Destination

The June 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) | Imperial (°F)

More about Slovenia

How hot is it in Portoroz in June?

Daytime temperatures usually reach 77°F in Portoroz in June with no heat and humidity, falling to 59°F at night.

How sunny is it in Portoroz in June?

There are normally 8 hours of bright sunshine each day in Portoroz in June - that's 51% of daylight hours.

How warm is the sea around Portoroz in June?

The average sea temperature around Portoroz in June is 72°F.

Does it rain in Portoroz in June?

There are usually 14 days with some rain in Portoroz in June and the average monthly rainfall is 4.5 inches.

Portoroz June sunrise & sunset times

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

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Date	Sunrise times	Sunset times
Sunday, 1st June 2025	04:20	19:47
Sunday, 15th June 2025	04:16	19:56
Monday, 30th June 2025	04:20	19:58

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Slovenia - quick facts
Flight time^✝	2 hours
Time difference	UK +1 hour
Language(s)	Slovenian
Currency	Euro
Electricity	C + F plug (230V)
Driving side	Right
Why visit?	Beaches Nature Nightlife
Tourist info	Slovenian Tourist Board