Resting on the Adriatic Sea, Piran comes with a typically-pleasant Mediterranean climate, which means hot, dry summers and mild winters. Daytime summer temperatures hover around the upper 20s (°C), while winters rarely see dips below 0°C during the day. Indeed, Piran’s favourable climate and sunny weather has attracted visitors for hundreds of years. Slovenia generally averages some of the highest levels of sunshine in Europe and Piran is no exception to this, boasting almost 2,000 hours of sunshine in a year, with up to ten hours of sunshine a day.

When to go – the best time to visit Piran
Summers in Piran are fairly 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 Piran 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.

For many visitors, the best time of year to visit Piran is the autumn, when the climate is especially pleasant. In September, in particular, the sea is still warm enough for swimming and the summer crowds have gone.

The winter weather and climate in Piran 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 Piran tend to stay between 4°C and 8°C during the winter months.

Springtime in Piran 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.

PIRAN YEARLY WEATHER SUMMARY
What’s the best time to travel to Piran 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 Piran, Slovenia, please take a look at the graphs shown below.

A climate graph for Piran, 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 Piran, 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 Piran, Slovenia.

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

Visitors to Piran can expect Mediterranean-style weather in the summer, with plenty of sunshine and high temperatures. Image by nagerw / CC BY-SA 2.0

All You Need To Know To Visit Piran

PIRAN – the gem of the Adriatic Sea located in Slovenian Istria The charming coastal town of Piran is a medieval jewel on the Adriatic coast, situated at the cape of the Piran peninsula on the northern side of Istria, with Italy on the horizon. Since being part of the Republic of Venice, Piran has a rich cultural heritage and the close Venetian influence is immediately apparent in its architecture with the narrow winding streets, houses huddled close together, rising in cascades, beautiful squares and churches and breathtaking sea views.