I agree with the good remarks and comments to improve the tidal data in Windy.
For navigation and sailing it is important to know the reference of the
tidal height. Many nautical charts in Europe are referred to L.A.T. (lowest astronomical tide).
On other areas there will be an other reference level.
In addition it is important to get the exact time(zone) for HW and LW. If a harbour is
accessible e.g. HW +-2 hours, the exact time is essential. Ignoring the one hour of daylight
saving time can cause problems. I suggest a text containing
local time and difference to UTC like: "BST = UTC+1"
A good reference for tidal navigation in Europe is the "Reeds Nautical Almanac"