Because of the rising heat of the land and the moist air drawn in from the Atlantic Ocean, almost every day from May though October holds a chance for "Popup Afternoon Showers and Thunderstorms".
The residents of Coastal South Carolina welcome this brief respite from the heat to wash away the dust and to cool and refresh the air, typically sometime between 2 and 6 pm. Even then, the showers can be very widely scattered, and not everyone will have the opportunity to enjoy them. It may be raining where you are but sunny only a 1/4 mile away.
You may hear on the radio and television the Weather Forecasters announcing thunderstorms for days in advance. Please do not be alarmed ... go ahead and make your reservations anyway. We have become very adept at checking current Weather Satellite Photos and Doppler Weather Radar on the internet in the morning. Although we can never be 100% accurate, we can much better assess our local weather than the general statewide alarms that the radio and TV weather broadcasts offer.
Although we do not cancel tours for passing showers (refreshing!), we do not intentionally conduct tours during thunderstorms. If there is a problem anticipated, we will cancel, delay, or reschedule the tour and call you early enough in advance to let you make other plans.