Charts
Tide curves and swell periods, overlaid.
Read the curve
A tide chart is a sine wave: time on the horizontal, height on the vertical. The steep parts are when the water is moving fastest — and that movement is what shapes a wave.
What we overlay
tide height curve, animated swell period + direction, below wind speed + direction, colour-coded moon phase markers, top
The read
Steep incoming tide + offshore wind + a clean long-period swell is the trifecta. The chart lines all tilt the same way.