Weather

Forecasts

Inshore Waters Forecast
Shipping Forecast
Shipping Forecast (plain text)
UK Forecast (Met Office - very good)
High Seas / Storm warnings
BBC Coast and Sea (lots of information and very good)
BBC Coastal forecast Selsey Bill to St Albans Head

RYA Forecasts - Southampton but you can select your own location

Meteo France

US National Weather Service NOAA site (incredibly comprehensive worldwide)
MetVU - a Kiwi site which does worldwide forecast charts
ECMWF forecast (surface pressure, geostrophic wind)
Theyr.tv - great site from Iceland  (sadly now chargeable)
Accuweather
Weather.co.uk 10 day forecasts
Weatheronline
Metcheck
WindGuru

XC Weather - UK

XC Weather - France

Weathercharts.org - a very interesting site which provides a huge variety of charts
Weatherweb dot tv - an internet broadcast of UK weather - very good indeed
Weatherweb - there are free basic forecasts, but also longer range ones to buy
Wetterzentrale (German site which is very good)
Westwind (more choices in presentation)
Magic Seaweed (very good for animated wind and swell)

Irish Waters
Mediterranean Waters around Italy (Italian Site, very good)

Grib US - a very good site to download a view which gets you updated wind forecasts - excellent