If you planning to travel to H.L. Hunley Submarine, Charleston, 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 10:38 AM. The temperature feels like 66.9 with a humidity level of 66 so dress accordingly. Cloud coverage is 5 percent with visibility at 12.7 percent. Today’s UV index is 10, don’t forget the sunscreen if you need it! Today’s winds are traveling southwest at a speed of 9 MPH. At the end of the day don’t miss the sunset at 11:58 PM.