Bay Area Gem

Cant vouch for the rest of the world but this app is pretty decent at displaying wind for the Bay Area windsurfing/kitesurfing hot spots. There is no human forecast just a computer generated prediction probably based off NOAA. All gradients are adjustable i.g. celcius vs. farenheit. Not a bad start. Can only get better.

sf_windsurfer about Windfinder: Wind & Weather map