The temperatures in Opatija in August are comfortable with low of 16°C and and high up to 26°C.
You can expect about 3 to 8 days of rain in Opatija 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 Opatija in August 2025.
If you’re planning to visit Opatija in the near future, we highly recommend that you review the 14 day weather forecast for Opatija before you arrive.
Temperatures
26° / 16°
Rainy Days
6
Snowy Days
0
Dry Days
25
Rainfall
136
mm
Sun Hours
11.6
Hrs
