If you planning to travel to Fort Moultrie National Monument, Sullivans Island, South Carolina, 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 10:23 AM. The temperature feels like 73.44999999999999 with a humidity level of 87 so dress accordingly. Cloud coverage is 51 percent with visibility at 11 percent. Today’s UV index is 6, don’t forget the sunscreen if you need it! Today’s winds are traveling west-southwest at a speed of 13 MPH. At the end of the day don’t miss the sunset at 12:09 AM.