I love the Windy app. I have it on my phone and use the site on my computer. I use it to study the weather and scout sea conditions for spearfishing. Today however I noticed that the wave reading for where I live was way off.
I live on the Corinthian Gulf in Greece, and if you check the data which much surely be available by now, you can compare it to the readings you gave in your app.
It has been showing something like 0.1 meters for where I live and yet I've been looking out the window and for the past 6 hours or so it's been very wavy. Waves crashing over the pier etc.
I felt this was worth mentioning because this renders the wave function useless. If it can be off by this much, even in the present time, then how can it be reliable?