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 64.95 with a humidity level of 87 so dress accordingly. Cloud coverage is 9 percent with visibility at 7.1 percent. Today’s UV index is 0, don’t forget the sunscreen if you need it! Today’s winds are traveling south at a speed of 7 MPH. At the end of the day don’t miss the sunset at 12:35 AM.