I use windguru normally, but at work we've just started using this website for the routing of commercial vessels. You can play around with it, but basically it can give you wind speed/direction, wave height/frequency/direction in an animated format. It's free and it works up to a week in advance. It's not spam or a virus.
Copy and paste this address into your browser
https://www.ventusky.com/?p=43.0;4.0;3&l=wind
Copy and paste this address into your browser
https://www.ventusky.com/?p=43.0;4.0;3&l=wind
