Portorož Rainfall & Precipitation: Monthly Averages and Year-Round Insights

This page shows the average amount of rainfall per month in Portorož. The numbers are calculated over a 30-year period to provide a reliable average. Now, let’s break down all the details for a clearer picture.

Portorož experiences significant rainfall throughout the year, averaging 1277 mm of precipitation annually.

Monthly Precipitation Levels

The average number of days each month with precipitation (> 0.2 mm)

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.

November, the city’s wettest month, has a maximum daytime temperature of 15°C and receives 110 hours of sunshine. During the driest month July you can expect a temperature of 27°C. For more detailed insights into the city’s temperatures, visit our Portorož Temperature page.

Annual Precipitation in Slovenia

The map below shows the annual precipitation across Slovenia. You can also select the different months in case you are interested in a specific month.

Amsterdam Precipitation Compared World Wide

Portorož’s average annual precipitation is 1277 mm. Let’s compare this to some popular worldwide tourist destinations:

Chicago, USA, sees an annual precipitation of 1062 mm, with rain and snow contributing to its humid climate.

In Seoul, South Korea, the average annual precipitation is 1237 mm, with most rain falling during the summer monsoon season.

In Brisbane, Australia, the annual precipitation is 979 mm, making it wetter than Sydney.

Singapore, situated near the equator, gets 2581 mm of rainfall annually, with no distinct dry season and consistent monthly precipitation.

How is Precipitation Measured?

Precipitation amounts are measured using specific gauges installed at weather stations, collecting both rain and snow and any other type of precipitation. Rainfall is measured directly in millimeters, while that from snow and ice is obtained by melting it. Automated systems often incorporate heaters to make this easier.

Information from these stations is transmitted via Wi-Fi, satellite, GPS, or telephone connections to central monitoring networks. This information is immediately updated and integrated into weather models and forecasts.

Interesting weather facts

• Mawsynram in India is noted as being the wettest place on earth, with over 11 meters of rain falling every year.
• In contrast, Antofagasta in Chile is among the driest places on the planet, getting less than 0.1mm per year, with some years recording virtually no rainfall.
• Nearly 1,650 thunderstorm cells are estimated over the planet at any given time.

For more detailed information about Portorož’s weather, including sunshine hours, humidity levels, and temperature data, visit our Portorož Climate page.