Surf forecastStatisticsHistorical report

Topanga Beach seasonal overview

Best Surf Season (November - February)

The heart of winter delivers the most consistent and quality surf for Topanga Beach. With ideal offshore wind percentages climbing above 56% and peaking at 60% in December, the combination of long-period groundswell and clean north winds sets the stage. While average wave heights hover around 0.8-0.9m, the long periods (12-12.4s) pack a punch, and when a strong storm track sends S-SSW swell our way, the beach can fire with fun, rippable waves. This is the prime time to score.

Fair Surf Season (March - April & September - October)

During the transition months, the offshore wind frequency drops to 43-50%, but the swell remains consistent. The decline in north wind strength leads to more variable conditions, but the ocean still churns with long-period energy from the west. These months offer a good chance at clean surf, especially when high pressure sets up off the coast and delivers those coveted N/NE breezes. It's a shoulder season worth watching.

Low Surf Season (May - August)

Summer is the quietest period for Topanga. Favorable offshore winds plummet to below 27% as the Southern California climate shifts to a persistent southwesterly onshore flow. Swell heights remain small (0.8m average) and while the period is still impressive (12.5-12.7s), the dominant westerly swell direction often combines with onshore winds to produce subpar conditions. Early morning north winds can offer a narrow window, but overall it's a time for a shortboard or a groveler, not expectations of pumping surf.

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Conditions at Topanga Beach in December

December: Peak Performance

December hits the highest ideal wind percentage of the year at 60%. The average swell height is 0.8m with a period of 12.4s. Swell arrives predominantly from the W (53.6%) and WSW (29.5%), with a solid SW component at 10.4% and even some SSW at 2.5%. The north-northeasterly winds are at their peak, blowing light to moderate in the mornings and often lasting through the day. The long-period swell from winter storms can occasionally reach head-high or better when a strong low-pressure system aligns. December offers the best chance for clean, powerful, rippable surf at Topanga Beach. It's the month to plan your sessions around.

Average Spot conditions at Topanga Beach in December

Swell history for December

0 - 0.5
0.5 - 1
1 - 1.5
1.5 - 2.0
2.0 - 2.5
> 2.5 m

Wind history for December

0 - 10
10 - 20
20 - 30
30 - 40
40 - 50
> 50 km/h

Swell quality

Analyze the groundswell consistency at Topanga Beach during December. Based on historical data, there is a % probability of groundswell occurring this month. The chart below provides a detailed breakdown of the average wave height distribution, offering deep insights into the swell quality and surf potential you can expect at Topanga Beach for your next trip in December.

Ground swell

Ground swell by size

Wind conditions

Evaluate the wind and swell alignment at Topanga Beach for December. Our analysis shows that favorable offshore or side-shore winds coincide with surfable swell approximately % of the time. The accompanying graph illustrates the average size distribution of waves during these optimal wind windows at Topanga Beach.

Swell with good wind

Swell with good wind by size