A Year-Round Surf Destination with Two Distinct Seasons
Southern California is one of the most accessible surf regions on earth — warm water, reliable surf, world-class breaks, and the infrastructure of a mature surf culture that has been building since the 1950s. Unlike Hawaii or Portugal, where the surf is heavily concentrated in a single winter season, Southern California operates on two distinct swell seasons that between them cover the entire calendar year.
Understanding which season is active, and which breaks come alive when, is the key to planning any SoCal surf trip.
The Two Seasons
Northwest Swell Season (October – March)
The dominant swell source for Southern California during autumn and winter is the North Pacific storm track. Low-pressure systems track across the Pacific and generate northwest swells that hit the California coast from the north. These swells are often long-period — 13 to 17 seconds — and produce the best quality surf of the year at breaks oriented to receive northwest energy.
The drawback is direction: most Southern California coastline runs roughly north to south, with breaks facing west or southwest. Northwest swells wrap around headlands and arrive at reduced size compared to what the open ocean is producing. The spots that benefit most are those that jut out into the Pacific or face more northerly.
South Swell Season (April – September)
During late spring, summer, and early autumn, the dominant swell source shifts to the South Pacific. Storms in the Southern Ocean — particularly around New Zealand and the sub-Antarctic — generate south swells that travel thousands of kilometres northward to reach Southern California. These swells arrive from a direction that the California coastline faces almost directly, so they hit beach breaks and south-facing points with minimal shadow loss.
South swells also tend to produce longer-interval waves than local wind swells, often in the 14–18 second range, which creates the long, rolling lefts and rights that define the classic California surfing aesthetic. Malibu, San Onofre, and Lower Trestles are iconic examples of breaks that reach their best on long-period south swells. Rincon, by contrast, is shadowed by the Channel Islands and is effectively flat on south swells — it is strictly a northwest winter break.
Month by Month
October – November (Transition to NW Season)
October is one of the best months in Southern California. The summer crowds have thinned, water temperature is still warm from summer (around 18–20°C / 64–68°F), and the first northwest swells of the season begin to arrive alongside the last south swells of summer. Breaks like Salt Creek and Rincon begin to wake up on the first northwest pulses, and Lowers can still fire on late-season south energy before the season fully turns. November brings more consistent northwest energy as the storm track strengthens.
December – February (Peak NW Season)
This is the most powerful time of year in Southern California. Large northwest swells generate serious surf at exposed breaks, while point breaks and more sheltered spots handle the energy more gracefully. Rincon in Carpinteria can produce the best surfing in California on a well-aimed northwest swell, with point break walls stretching hundreds of metres. Windansea and Blacks Beach in La Jolla also come alive, along with Salt Creek in Dana Point. Water temperature drops to around 14–16°C (57–61°F) — a full 5/4 wetsuit is standard.
March – May (Transition to S Season)
Spring is often the most inconsistent period — between seasons, with neither northwest swells delivering reliably nor south swells fully established. But it is also uncrowded and the water begins to warm. Good south groundswells can arrive as early as April, and when they do the classic California breaks come alive before the summer crowds arrive.
June – September (Peak S Season)
Summer in Southern California is synonymous with long-period south swells, warm water (18–22°C / 64–72°F), and the longboard culture that defines the region. Lower Trestles is at its best during south and southwest swells — this is when the WSL holds its Championship Tour event there, typically in September. First Point Malibu is at its best on south swells, producing the long, logging walls that made California surf culture famous. Huntington Beach comes alive during summer south swells, as does San Onofre — one of the most relaxed and community-oriented surf spots in the world. Swamis in Encinitas produces excellent right-handers when south swells wrap around the kelp beds.
The Spots
Lowers (Lower Trestles) — Consistently rated one of the best waves in the world. A point break in San Onofre State Beach that fires on south and southwest swells, producing powerful, mechanical lefts and rights that reward progressive surfing. The WSL holds a Championship Tour event here each September. No vehicle access — park at San Onofre State Beach and walk, bike, or skateboard the ~1.5-mile trail to the break.
Uppers (Upper Trestles) — The break immediately north of Lowers, with a more raw and unpredictable character. Less consistent but capable of producing exceptional surf on the right swell and tide.
Rincon — The Queen of the Coast. A world-class right-hand point break at the Santa Barbara/Ventura county line that produces walls of 300 metres or more on a good northwest swell. At its best in winter and early spring. Rincon is an icon.
C-Street (California Street) — A long, mellow right-hand point break in Ventura. Consistent, fun, and accessible across a wide range of skill levels. Best on northwest swells that wrap into the point.
First Point Malibu — The birthplace of California surf culture. A right-hand point break that can produce walls of 200 metres or more on a south swell. Best at mid to low tide. In summer it is among the most crowded breaks in the world.
El Porto — A punchy, powerful beach break in Manhattan Beach that handles both north and south swells. Often has more size than nearby breaks due to its exposure. Popular with shortboarders and bodyboarders year-round.
Huntington Beach — Surf City USA. A long stretch of consistent beach break centred around the pier. Best on summer south swells. The WSL has held the US Open here for decades.
Salt Creek — A reef and sand break in Dana Point that works on northwest swells with more consistency than many nearby spots. Often one of the best bets when swells are in the 4–6 foot range.
San Onofre — A mellow, longboard-friendly right-hander inside a state park. Best on south swells. The epitome of relaxed California surf culture.
Swamis — A rocky reef break in Encinitas that produces excellent rights on south swells. Named after the Self-Realization Fellowship temple above the cliff. A local institution.
Windansea — A rocky reef break in La Jolla. Works best on northwest swells and produces hollow, fast waves that reward experienced surfers. The Windansea Surf Club is one of the oldest in California.
Blacks Beach — A beach break below the Torrey Pines cliffs in La Jolla, accessible only by a steep trail or cliff. The remote setting keeps crowds thin and the surf can be excellent on both north and south swells.
When to Go
For the best overall conditions, October and November hit the sweet spot: the first northwest swells are arriving, water is still warm, crowds are thin, and the weather is ideal.
For classic California summer vibes — long south swells, warm water, longboards at Malibu — July and August are the answer.
For the most powerful surf — heavy winter northwest swells at Rincon and Windansea — December through February delivers, but pack a thick wetsuit.
Check live conditions at groundswell.surf/spots/lowers, groundswell.surf/spots/rincon, or any of the spots above before paddling out.