If you planning to travel to Siesta Key Marina, Siesta Key, Florida, 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 11:40 AM. The temperature feels like 80 with a humidity level of 79 so dress accordingly. Cloud coverage is 8 percent with visibility at 13 percent. Today’s UV index is 2, don’t forget the sunscreen if you need it! Today’s winds are traveling east-northeast at a speed of 13 MPH. At the end of the day don’t miss the sunset at 10:45 PM.