Portorož Weather and Climate: A Comprehensive Guide
Portorož experiences great temperature shifts.
The city's weather can transition from warm days
to cold weather.
It also has a relatively rainy climate with high levels of precipitation.
Let’s explore the climate details in depth to provide you with a complete overview.
Average maximum day and minimum night temperature
The climate in Portorož is known for significant temperature differences throughout the year, making the weather dynamic. On average, daytime temperatures range from a comfortable 28°C in August to a chilly 9°C in January.
Nighttime temperatures can drop, with average lows reaching 5°C in January. Check out our detailed temperature page for more information.Temperature ranges by month
Precipitation and rainy days
Portorož has a notably wet climate with abundant precipitation, recording 1277 mm of rainfall per year. The seasons in Portorož, bring significant changes in precipitation. The wettest month, November, receives heavy rainfall, with an average of 177 mm of precipitation. This rainfall is distributed across 13 rainy days. In contrast, the driest month, July, experiences much less rainfall, totaling 55 mm over 11 rainy days. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our Portorož Precipitation page.The mean monthly precipitation over the year, including rain, hail and snow
The average number of days each month with precipitation
Sunshine over the year
In Portorož, summer days are longer and more sunny, with daily sunshine hours peaking at 10.6 hours in July. As the darker season arrives, the brightness of the sun becomes less. December sees a soft sun for only 3.2 hours per average day. Visit our detailed sunshine hours page for more information.Monthly hours of sunshine
Daily hours of sunshine
Average humidity
The relative humidity is moderate throughout the year in Portorož.
The city experiences its highest humidity in January, reaching 67%. In July, the humidity drops to its lowest level at 50%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
clear and no rain broken clouds and no rain partly cloudy and no rainForecast for Portorož
4 m/s
3 m/s
4 m/s
Select a Month of Interest
Check the conditions for any month of the year.
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:
Most rainfall (rainy season) is seen in September, October and November.
August has an average maximum temperature of 28°C and is the warmest month of the year.
The coldest month is January with an average maximum temperature of 9°C.
November tops the wettest month list with 177 mm of rainfall.
July is the driest month with 55 mm of precipitation.
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.
