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Portoroz weather in August 2025
Expect 27°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in Portoroz in August. Check more long-term weather averages for Portoroz in August before you book your next holiday to Slovenia in 2025/2026.
- 2727°C max day temperature
- 8 hours of sunshine per day
- 1111 days with some rainfall
- 1717°C min night temperature
- 1414 hours of daylight per day
- LLow heat & humidity
- 109109 mm of monthly rainfall
- 77 (High) UV index
- 2525°C sea temperature
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Recommended for Slovenia
The August 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)
More about Slovenia
How hot is it in Portoroz in August?
Daytime temperatures usually reach 27°C in Portoroz in August with low heat and humidity, falling to 17°C at night.
How sunny is it in Portoroz in August?
There are normally 8 hours of bright sunshine each day in Portoroz in August - that's 60% of daylight hours.
How warm is the sea around Portoroz in August?
The average sea temperature around Portoroz in August is 25°C.
Does it rain in Portoroz in August?
There are usually 11 days with some rain in Portoroz in August and the average monthly rainfall is 109mm.
Portoroz August sunrise & sunset times
Browse the sunrise and sunset times for Portoroz in August 2025. Select a month to view Portoroz sunrise and sunset times for the next 12 months.
JanFebMarAprMayJunJulAugSepOctNovDec
Date | Sunrise times | Sunset times |
---|---|---|
Friday, 1st August 2025 | 04:50 | 19:34 |
Saturday, 16th August 2025 | 05:08 | 19:11 |
Sunday, 31st August 2025 | 05:26 | 18:45 |
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