Wind Guru

Awesome Wind and Surf Stats this is the one we use most.

buoyweather.com

5 Day Wave predictions for UK waters

Interactive Marine Buoys

These are buoys strategically placed around the British Isles. Click on the one nearest to you or your destination and scroll down the page to find out about the wave activity. Large wave height and quick time means a windy choppy swell, large waves and a long gap means and good clean well ordered ground swell.

http://www.ndbc.noaa.gov/maps/United_Kingdom.shtml

European Wave Forecast Animation

An excellent animated wave chart for the Europe

Shows the swells movement across the atlantic

http://facs.scripps.edu/surf/images/euranim.gif

North Atlantic Wave Animation

An excellent animated wave chart for the Northern Hemisphere

Shows the swells movement across the atlantic

http://facs.scripps.edu/surf/nata.html