Portoroz weather live forecast

Today's maximum temperature in Portoroz is expected to be 97°F. Select a day from the live weather forecast for Portoroz, Slovenia for more weather parameters.

5-day weather forecast updated at 04:02 on Saturday 16th August 2025 GMT

More about Portoroz

Portoroz by month

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

Recommended for Slovenia

TUI: up to 8% off holidays booked online

  • Book online with TUI & save up to 8% on holidays
  • FREE child places available for select holidays
  • Pay £0 deposits with direct debit & spread the cost
Go to TUI deal >>

View all TUI offers

TUITUI deal finder

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 Saturday 16th August 2025

Expect scattered clouds in Portoroz, Slovenia with a maximum temperature of 97°F, high levels of heat & humidity, maximum UV of 7 (High) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 9 mph from the north-east.

  • 97°F maximum temperature97
    °F maximum temperature
  • 72°F minimum temperature72
    °F minimum temperature
  • Scattered clouds
    scattered clouds
  • 9 hours of bright sunshine9
    hours of sunshine
  • UV (maximum) index 7 (High)7
    UV index (High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • High heat & humidityH
    high heat & humidity
  • Gentle breeze of 9 mph from the North-East9
    mph wind from NE

Back to top

Portoroz weather for Sunday 17th August 2025

Expect isolated thunderstorms in Portoroz, Slovenia with a maximum temperature of 88°F, moderate levels of heat & humidity, maximum UV of 6 (High) and 9 hours of bright sunshine. There are 0-2 mm of rainfall expected with 24% chance of some rain and a gentle breeze of 10 mph from the north-east.

  • 88°F maximum temperature88
    °F maximum temperature
  • 73°F minimum temperature73
    °F minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 9 hours of bright sunshine9
    hours of sunshine
  • UV (maximum) index 6 (High)6
    UV index (High)
  • 24% chance of some rain24
    % chance of some rain
  • 0-2 mm of rainfall expected<2
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Gentle breeze of 10 mph from the North-East10
    mph wind from NE

Back to top

Portoroz weather for Monday 18th August 2025

Expect broken clouds in Portoroz, Slovenia with a maximum temperature of 86°F, moderate levels of heat & humidity, maximum UV of 6 (High) and 8 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 9 mph from the north-east.

  • 86°F maximum temperature86
    °F maximum temperature
  • 70°F minimum temperature70
    °F minimum temperature
  • Broken clouds
    broken clouds
  • 8 hours of bright sunshine8
    hours of sunshine
  • UV (maximum) index 6 (High)6
    UV index (High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Gentle breeze of 9 mph from the North-East9
    mph wind from NE

Back to top

Portoroz weather for Tuesday 19th August 2025

Expect scattered clouds in Portoroz, Slovenia with a maximum temperature of 86°F, moderate levels of heat & humidity, maximum UV of 7 (High) and 9 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 8 mph from the east.

  • 86°F maximum temperature86
    °F maximum temperature
  • 66°F minimum temperature66
    °F minimum temperature
  • Scattered clouds
    scattered clouds
  • 9 hours of bright sunshine9
    hours of sunshine
  • UV (maximum) index 7 (High)7
    UV index (High)
  • 0 mm of rainfall expected0
    mm of rainfall expected
  • Moderate heat & humidityM
    moderate heat & humidity
  • Gentle breeze of 8 mph from the East8
    mph wind from E

Back to top

Portoroz weather for Wednesday 20th August 2025

Expect isolated thunderstorms in Portoroz, Slovenia with a maximum temperature of 82°F, low levels of heat & humidity, maximum UV of 5 (Moderate) and 6 hours of bright sunshine. There are 5-10 mm of rainfall expected with 68% chance of some rain and a gentle breeze of 8 mph from the south-west.

  • 82°F maximum temperature82
    °F maximum temperature
  • 66°F minimum temperature66
    °F minimum temperature
  • Isolated thunderstorms
    isolated thunderstorms
  • 6 hours of bright sunshine6
    hours of sunshine
  • UV (maximum) index 5 (Moderate)5
    UV index (Moderate)
  • 68% chance of some rain68
    % chance of some rain
  • 5-10 mm of rainfall expected<10
    mm of rainfall expected
  • Low heat & humidityL
    low heat & humidity
  • Gentle breeze of 8 mph from the South-West8
    mph wind from SW

Back to top

TUI: up to 8% off holidays booked online

  • Book online with TUI & save up to 8% on holidays
  • FREE child places available for select holidays
  • Pay £0 deposits with direct debit & spread the cost
Go to TUI deal >>

View all TUI offers

TUITUI deal finder

Metric (°C)  |  Imperial (°F)

Back to top

More about Slovenia

Related posts

Popular travel offers

Explore holidays in the sun for less

More holidays

Airport parking

More parking

Airport lounges

More lounges

Top ^