I go to:
http://mvcodata.whoi.edu/cgi-bin/mvco/mvco.cgi
That is a cam on south beach, MV and a bouy 1 mile off. It tells you a ton and the cam gives you a picture of what the beach looks like.
I live a quarter mile from the beach and still use that to tell me what is up on the south side.
Also:
www.ndbc.noaa.gov/Maps/Northeast.shtml
This is the bouys offshore in the region and give you a pretty good idea of swell height, period, water temp, etc.
It is especially good because you can determine roughly when the swell will arrive or start.
Go get em' !
