Someone asked me about my favorite weather websites for Dewees. Here goes:
General Weather Information
Hourly Information, including Wind Direction
Great Surfing and Wind Information from the Isle of Palms (next to Dewees)
Run by a sailing friend of mine; used by all the local surfers.
NOAA Hourly Information, including Wind Direction
Great for sailors, but a little harder to read.
Historical Weather Information for Sullivans Island (the closest site to Dewees)
Very useful when trying to figure out what clothes to bring in, say, November.