Ocean Beach (SF) Surf Season
California, USA · part of the Ocean Beach (SF) spot guide
Ocean Beach is a raw, open, west-facing catch-all that turns on when North Pacific storms fire. Winter, November to March and peaking December to January, delivers long-period northwest-to-west groundswell to the outer bars with offshore-friendly dawns, and many guides call January the single best month. Summer gets frequent but shorter-period northwest windswell and is more often small, wind-affected and foggy; fall (September to October) is an underrated clean window with the warmest water before winter’s power arrives.
Where the swell comes from
North Pacific and Gulf of Alaska winter storms for the dominant long-period northwest-to-west groundswell, nearer northwest windswell for the summer bread-and-butter, and a partial Southern Hemisphere south swell that Ocean Beach catches weakly.
Historic swells at Ocean Beach (SF)
North Pacific storm train
Weeks of XL surf across NorCal — the same storm energy that ran the Eddie window in Hawaii — gave Ocean Beach big spitting outer-bar A-frames in the 12-to-15-foot face range and up.
El Niño winter
A famously swell-rich El Niño hammered the California coast; at Ocean Beach the relentless surf and high water drove major erosion at the Sloat end and emergency armoring — the spot’s history is told as winters, not single days.