If you planning to travel to Grand Dunes Golf Course, Myrtle Beach, 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 11:00 AM. The temperature feels like 72.05 with a humidity level of 92 so dress accordingly. Cloud coverage is 57 percent with visibility at 7 percent. Today’s UV index is 8, don’t forget the sunscreen if you need it! Today’s winds are traveling south at a speed of 9 MPH. At the end of the day don’t miss the sunset at 11:39 PM.