The weather in Istria in August is very hot. The average temperatures are between 23°C and 28°C, drinking water regularly is advisable.
You can expect about 3 to 8 days of rain in Istria during the month of August. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Istria in August 2025.
If you’re planning to visit Istria in the near future, we highly recommend that you review the 14 day weather forecast for Istria before you arrive.
Temperatures
28° / 23°
Rainy Days
5
Snowy Days
0
Dry Days
26
Rainfall
120
mm
Sun Hours
11.7
Hrs
