I was just working my way through comments to see if anyone had said this.
I so often care about weather and tide in conjunction with each other. "Shall we go for a wander on the beach? - Better check the forecast and the tide."
For us, we have a substantial tidal range - commonly around 5 metres. And that is reflected in a beach that either totally disappears or takes ten minutes to walk to the sea!
Would like tidal state on my Apple Watch as well.
I know full well that there are lots of apps. But it really should be integrated - at least if you are within a certain distance of the coast.