Forecasting
Swell period: the number that decides your session.
Two-foot at 6 seconds and two-foot at 16 seconds are not the same wave. Here's why period — not height — is the first thing to read on any forecast.
Plain-English guides to reading swell, wind, tide and forecast models — so the numbers in the app always mean something.
Two-foot at 6 seconds and two-foot at 16 seconds are not the same wave. Here's why period — not height — is the first thing to read on any forecast.