@idefix37 I agree that Harmonie would be a very nice addition. Two years ago windguru added the Harmonie model when I requested them. I prefer Windy's interface, but for short term precision I still switch to windguru... I'm a paying user for both.

To make things easier for you: a Dutch guy already translates the 6-hourly updates to grib(1?)-files.

Here is the explanation in dutch, with subsets and the update times:
http://www.euroszeilen.utwente.nl/weer/grib/

Here are the links to the grib files (first one is all data, second is only wind)
https://www.euroszeilen.utwente.nl/weer/grib/download/harmonie_xy.grb
https://www.euroszeilen.utwente.nl/weer/grib/download/harmonie_xy_wind.grb
If the links don't bring you to a download but a website instead, the bottom right links are for the full model area.

Model run Beschikbaar
00:00 UTC ± 04:00 CET
06:00 UTC ± 10:00 CET
12:00 UTC ± 16:00 CET
18:00 UTC ± 22:00 CET

For more (technical) info you can contact menno@euros.nl (same first name, different guy)

I hope you give it a go.