Katakai is a surf spot in Chiba North. The beach faces ESE, so winds from the WSW-NNW are offshore and groom the faces, and swell from the E-SE works best.
See today's forecast for Katakai →Offshore wind blows from land to sea and keeps the faces clean. Onshore blows from sea to land and makes the same size harder to ride. In between is sideshore.
The closer the swell direction is to the beach's facing, the more of a distant low's energy arrives intact. Off-angle swell produces smaller waves for the same swell height.
MICHIHIKI does not compute tides itself; it uses the forecast values from the tide tables published by the JMA.High/low tide times and the tide graph are on the spot page.
General guidance only. It varies with the bottom, the day's swell quality and your own experience. Set your level on the spot page to see a ◎○△ rating for the day's conditions.
This page is a general guide derived mechanically from the beach orientation; how waves actually break depends on the seabed, season and the day's swell. Everything MICHIHIKI shows is a forecast. Decide whether to enter the water only after checking the beach yourself and official sources such as the JMA.