If you planning to travel to Open Air Summer Theater, Opatija, Croatia, here is your 6-day travel weather forecast to make sure you have all the essentials needed during your stay. Start your day when the sunrises at 5:47 AM. The temperature feels like 49.900000000000006 with a humidity level of 60 so dress accordingly. Cloud coverage is 8 percent with visibility at 14.9 percent. Today’s UV index is 3, don’t forget the sunscreen if you need it! Today’s winds are traveling northwest at a speed of 6 MPH. At the end of the day don’t miss the sunset at 3:42 PM.