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 11:46 AM. The temperature feels like 82.15 with a humidity level of 83 so dress accordingly. Cloud coverage is 23 percent with visibility at 12.4 percent. Today’s UV index is 3, don’t forget the sunscreen if you need it! Today’s winds are traveling east at a speed of 14 MPH. At the end of the day don’t miss the sunset at 10:40 PM.