If you planning to travel to Sankaty Head Light, Nantucket, Massachusetts, 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 11:38 AM. The temperature feels like 42.55 with a humidity level of 86 so dress accordingly. Cloud coverage is 85 percent with visibility at 8.6 percent. Today’s UV index is 1, don’t forget the sunscreen if you need it! Today’s winds are traveling west at a speed of 15 MPH. At the end of the day don’t miss the sunset at 9:13 PM.