Portoroz weather live forecast

Today's maximum temperature in Portoroz is expected to be 26°C. Select a day from the live weather forecast for Portoroz, Slovenia for more weather parameters.

5-day weather forecast updated at 04:02 on Monday 15th September 2025 GMT

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The 5-day weather forecast for Slovenia (Portoroz) is provided by the Swiss meteorological agency, meteoblue. Find out more about our data sources.

Portoroz weather forecast by day

Below are the detailed weather forecasts for Portoroz for the next 5 days.

Portoroz weather for Monday 15th September 2025

Expect scattered clouds in Portoroz, Slovenia with a maximum temperature of 26°C, maximum UV of 5 (Moderate) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 9 kph from the south-east.

  • 26°C maximum temperature26
    °C maximum temperature
  • 18°C minimum temperature18
    °C minimum temperature
  • Scattered clouds
    scattered clouds
  • 8 hours of bright sunshine8
    hours of sunshine
  • UV (maximum) index 5 (Moderate)5
    UV index (Moderate)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 26°C wind chill26
    °C wind chill
  • Light breeze of 9 kph from the South-East9
    kph wind from SE

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Portoroz weather for Tuesday 16th September 2025

Expect isolated thunderstorms in Portoroz, Slovenia with a maximum temperature of 24°C, maximum UV of 4 (Moderate) and 4 hours of bright sunshine. There are 0-2 mm of rainfall expected with 72% chance of some rain and a gentle breeze of 15 kph from the south-east.

  • 24°C maximum temperature24
    °C maximum temperature
  • 17°C minimum temperature17
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 4 hours of bright sunshine4
    hours of sunshine
  • UV (maximum) index 4 (Moderate)4
    UV index (Moderate)
  • 72% chance of some rain72
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • 24°C wind chill24
    °C wind chill
  • Gentle breeze of 15 kph from the South-East15
    kph wind from SE

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Portoroz weather for Wednesday 17th September 2025

Expect isolated thunderstorms in Portoroz, Slovenia with a maximum temperature of 24°C, maximum UV of 6 (High) and 9 hours of bright sunshine. There are 2-5 mm of rainfall expected with 10% chance of some rain and a gentle breeze of 15 kph from the north-east.

  • 24°C maximum temperature24
    °C maximum temperature
  • 16°C minimum temperature16
    °C minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 9 hours of bright sunshine9
    hours of sunshine
  • UV (maximum) index 6 (High)6
    UV index (High)
  • 10% chance of some rain10
    % chance of some rain
  • 2-5 mm of rainfall expected<5
    mm of rainfall expected
  • No heat & humidity0
    no heat & humidity
  • Gentle breeze of 15 kph from the North-East15
    kph wind from NE

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Portoroz weather for Thursday 18th September 2025

Expect clear skies in Portoroz, Slovenia with a maximum temperature of 25°C, maximum UV of 6 (High) and 12 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 9 kph from the east.

  • 25°C maximum temperature25
    °C maximum temperature
  • 15°C minimum temperature15
    °C minimum temperature
  • Clear skies
    clear skies
  • 12 hours of bright sunshine12
    hours of sunshine
  • UV (maximum) index 6 (High)6
    UV index (High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 25°C wind chill25
    °C wind chill
  • Light breeze of 9 kph from the East9
    kph wind from E

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Portoroz weather for Friday 19th September 2025

Expect clear skies in Portoroz, Slovenia with a maximum temperature of 26°C, maximum UV of 6 (High) and 12 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 9 kph from the east.

  • 26°C maximum temperature26
    °C maximum temperature
  • 16°C minimum temperature16
    °C minimum temperature
  • Clear skies
    clear skies
  • 12 hours of bright sunshine12
    hours of sunshine
  • UV (maximum) index 6 (High)6
    UV index (High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • 26°C wind chill26
    °C wind chill
  • Light breeze of 9 kph from the East9
    kph wind from E

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Metric (°C / mm)  |  Imperial (°F / inches)

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