Slovenian Istria enjoys a climate that is quite different from other parts of Slovenia. Here, visitors can expect Mediterranean-style weather in the summer, with plenty of sunshine and high temperatures, as well as mild winters. Slovenian Istria does experience a fair amount of rainfall throughout the year, so both summer and winter visitors should come prepared with appropriate wet weather gear.

When to go – the best time to visit Slovenian Istria
Summers in Slovenian Istria are pretty hot and mostly sunny, with average daytime temperatures between 22°C and 30°C. There are usually almost 11 hours of sunshine a day in July and August, so it’s worth packing some sunscreen in anticipation of the fine weather and clear skies. Hot temperatures are usually tempered by a cooling summer breeze, making the climate feel quite comfortable. Evening summer temperatures in Slovenian Istria are usually pleasant enough to be able to sit on the terraces and eat outside. However, the odd summer thunderstorm can sometimes break up the sunshine during the summer.

Autumn is a fantastic time to visit Slovenian Istria, with temperatures at a nice comfortable level between 20°C and 25°C. This means that it’s often warm enough to continue swimming in the sea right through until October.

The winter weather and climate in Slovenian Istria is quite mild compared to other parts of Slovenia. As a result, frost and snow are experienced only infrequently. Look out for the bora wind, which is a strong wind that brings blustery and rather cold weather to the town. Temperatures in Slovenian Istria tend to stay between 4°C and 8°C during the winter months.

Springtime in Slovenian Istria brings with it a relatively mild climate. It’s worth remembering that March and April can experience a fair amount of rainy weather. However, from May onwards, temperatures can reach around 20°C, which means that it is sometimes mild enough for visitors to be able to comfortably swim in the sea.

Summers in Slovenian Istria are pretty hot and mostly sunny, with average daytime temperatures between 22°C and 30°C. Image by Nicolas Vollmer / CC BY 2.0

SLOVENIAN ISTRIA YEARLY WEATHER SUMMARY

What’s the best time to travel to Slovenian Istria in Slovenia? Here are some facts:
– The months May, June, July, August, September and October have a nice average temperature.
– July is the warmest month with an average high of 28,8 °C and an average low of 16,9 °C.
– July is also the month with the most sunshine, with 11 hours per day.
– January is the coolest month with an average high of 8,9 °C and an average low of 0,7 °C.
– September is the wettest month with an average of 118 millimeters of precipitation.
– December and January are the most cloudy months with an average of 12 mostly cloudy days.
– July is the driest month with an average of 56 millimeters of rainfall.
– January is the month with the most snowfall, with a little over 3 centimetres on average.

For more specific information about the climate of Slovenian Istria, Slovenia, please take a look at the graphs shown below.

A climate graph for Slovenian Istria, Slovenia showing mean daily maximum and minimum temperature for a month and average monthly precipitation (rain/snow).

Graph showing average monthly hours of sunshine and average monthly number of cloudy days for Slovenian Istria, Slovenia.

Graph showing average monthly number of days with precipitation, average monthly number of days with snow cover and average monthly snowfall (in cm) for Slovenian Istria, Slovenia.

Graph showing average monthly number of hot and cold days for Slovenian Istria, Slovenia.

Swimming season in Slovenian Istria lasts from mid-May to late October. Image by Ric18Ek / CC BY-SA 3.0