Weather

Wetter3.de:

http://www.wetter3.de/

Windguru (if you want is available a PRO version):

http://windguru.com/it/index.php?switchlang=1

Meteo Trieste (Only for the Gulf of Trieste):

http://www.meteo.trieste.it/

AccuWeather.com:

http://www.accuweather.com/

Eurometeo MeteoMar:

http://www.eurometeo.com/italian/meteomar

Windfinder:

http://www.windfinder.com/

Datameteo (professional):

http://www.datameteo.com/meteo/index.php

IlMeteo.it (Marine):

http://www.ilmeteo.it/portale/marine

Meteo Italia (Webcam):

http://meteolive.leonardo.it/meteo-webcamlive.php

WeatherBug:

http://weather.weatherbug.com/

Meteo France (Marine):

http://marine.meteofrance.com/

Yahoo! Weather:

http://weather.yahoo.com/