If you planning to travel to St. John's Fortress, Sibenik, 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 6:27 AM. The temperature feels like 49.85 with a humidity level of 50 so dress accordingly. Cloud coverage is 2 percent with visibility at 14.9 percent. Today’s UV index is 2, don’t forget the sunscreen if you need it! Today’s winds are traveling north-northeast at a speed of 9 MPH. At the end of the day don’t miss the sunset at 3:26 PM.