The weather in Koper in August is hot. The average temperatures are between 20°C and 28°C.
You can expect about 3 to 8 days of rain in Koper 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 Koper in August 2025.
If you’re planning to visit Koper in the near future, we highly recommend that you review the 14 day weather forecast for Koper before you arrive.
Temperatures
28° / 20°
Rainy Days
7
Snowy Days
0
Dry Days
24
Rainfall
148
mm
Sun Hours
11.5
Hrs
