MARÉE

The tide runs 50 minutes late every day. Your timetable does not.

You set the beginner lessons for 9am because that week the tide was right at 9am. Two weeks later the same 9am lesson gets a full tide and shore-break — and nobody changed anything, because nobody noticed.

You say which tide that lesson works on — low, rising, high — and the hour stops being yours and becomes the sea's. Every day the system finds the right window on that beach and books the lesson inside it. Lessons stay between 7am and 8pm.

See this in SurfBooking OS Combien ça coûte

~50minHow much later the tide runs each day

Per beachEvery break has its own window

By itselfThe hour is recomputed every day

En production depuis avril 2026, entre les mains d'écoles de surf.

COMMENT ÇA MARCHE

Four steps.

You say the tide, not the hour
When you create the lesson you pick the window: low, rising, high. It is the same call you already make in your head looking at the tide table — except it gets written down once instead of every week.
It finds the window on that beach
The tide is not the same in Carcavelos and in Matosinhos, and the gap between two breaks can be over an hour. The window is computed at the break where the lesson happens, not on a national average.
The hour recomputes every day
Because the tide runs about 50 minutes later each day, the lesson hour moves with it. Monday's lesson and Friday's are not the same clock hour — they are the same sea hour.
And it stays between 7am and 8pm
Lessons stay between 7am and 8pm. If the tide window falls outside those hours, the lesson stays where it was.