ClimateForecastMayJune >>

Climate in Portorož (Carinthia), Slovenia

The graphs below show the monthly weather averages over the year.

Average day and night temperature

The mean minimum and maximum temperatures over the year.

Monthly precipitation

The mean monthly precipitation over the year, including rain, snow, hail etc.

Forecast for Portorož

Thu   May 30
24°C | 14°C
N 11 km/h
9.8 mm
broken clouds and rain

broken clouds and rain

Fri   May 31
24°C | 16°C
SE 14 km/h
28 mm
broken clouds and thunder

broken clouds and thunder

Sat   Jun 01
24°C | 13°C
W 14 km/h
2.9 mm
clear and small chance of slight rain

clear and small chance of slight rain

The best time of year to visit Portorož in Slovenia

During the months of May, June and September you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.

Other facts from our historical weather data:

  • Which months have the greatest rainfall in Portorož?
    Most rainfall (rainy season) is seen in September, October and November.
  • Which is the warmest month in Portorož?
    August has an average maximum temperature of 28°C and is the warmest month of the year.
  • Which is the coldest month in Portorož?
    The coldest month is January with an average maximum temperature of 9°C.
  • Which is the wettest month in Portorož?
    November tops the wettest month list with 177 mm of rainfall.
  • Which is the driest month in Portorož?
    July is the driest month with 55 mm of precipitation.
  • Which is the sunniest month in Portorož?
    July is the sunniest month with an average of 317 hours of sunshine.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.