Windguru on the iPhone
The app can be downloaded and installed directly from your iPhone, or through iTunes - in the Weather category of the App Store. It's FREE.
You can watch the forecasts more comfortably then using WAP, you can browse all the spots from the main list, search the spots, login with your username and password so that you can easily see your favourites.
The iPhone app was developed by Richard Hewitson from PerceiveIT. Please send bug reports, comments or new ideas to