If you planning to travel to McCarthy's Marina, Captiva, 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 10:59 AM. The temperature feels like 76.6 with a humidity level of 85 so dress accordingly. Cloud coverage is 7 percent with visibility at 9.5 percent. Today’s UV index is 3, don’t forget the sunscreen if you need it! Today’s winds are traveling south-southwest at a speed of 8 MPH. At the end of the day don’t miss the sunset at 11:55 PM.