What is swell direction?

Swell direction is the compass bearing the swell is traveling FROM. A "320° swell" is coming from the northwest and traveling toward the southeast. Reports use either degrees (0-360) or compass abbreviations (N, NW, WSW). Direction matters as much as size — a swell only breaks at beaches whose coastline faces the swell.

What is a swell window?

A swell window is the range of compass directions a surf break is open to. A north-facing beach has a swell window centered on N (0°). A west-facing point can take swell from SW through NW. Swells outside the window are blocked by land or refract away. Knowing your spot's swell window tells you which forecasts will deliver waves and which will leave the spot flat.

Why is SoCal sometimes pumping while NorCal is flat?

Different swell directions hit different parts of the coast. Summer southern-hemisphere swells (from storms off New Zealand) come from 180–220° and hit south-facing beaches in Southern California, Hawaii, and Mexico — but pass NorCal's north/west-facing beaches without breaking. Winter Pacific NW storms generate 280–320° swells that light up Oregon and Washington while leaving SoCal smaller.

Swell Direction Explained — Why Beach Orientation Matters

Swell Direction Explained — Why Beach Orientation MattersSwell direction is the compass bearing the swell is traveling FROM. Determines which coastlines see waves and which stay flat. How to match swell direction to beach exposure.

Frequently asked questions

What is swell direction?: Swell direction is the compass bearing the swell is traveling FROM. A "320° swell" is coming from the northwest and traveling toward the southeast. Reports use either degrees (0-360) or compass abbreviations (N, NW, WSW). Direction matters as much as size — a swell only breaks at beaches whose coastline faces the swell.
What is a swell window?: A swell window is the range of compass directions a surf break is open to. A north-facing beach has a swell window centered on N (0°). A west-facing point can take swell from SW through NW. Swells outside the window are blocked by land or refract away. Knowing your spot's swell window tells you which forecasts will deliver waves and which will leave the spot flat.
Why is SoCal sometimes pumping while NorCal is flat?: Different swell directions hit different parts of the coast. Summer southern-hemisphere swells (from storms off New Zealand) come from 180–220° and hit south-facing beaches in Southern California, Hawaii, and Mexico — but pass NorCal's north/west-facing beaches without breaking. Winter Pacific NW storms generate 280–320° swells that light up Oregon and Washington while leaving SoCal smaller.

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