San Augustin seasonal overview
Best Surf Season (July - October)
The heart of summer and early fall delivers the most consistent and high-quality surf at San Augustin. The Pacific storm track shifts, and we see a climatological uptick in powerful, long-period SSW and S swell trains marching straight into this south-facing beach. Average wave heights hover in the 1.6m range, with periods frequently stretching past 13 seconds – that's powerful and punchy stuff. Critically, the percentage of ideal offshore wind (N, NNE, NE, NNW) peaks during these months, often exceeding 55% and hitting 62% in July. This combination of consistent, well-aligned swell and clean, offshore breezes creates firing conditions that can rival any point in Mexico. While the occasional tropical disturbance can add extra juice, the reliable groundswell is the main draw.
Fair Surf Season (November - January & April - June)
The shoulder seasons bring a mix of quality and trade-offs. In late fall and early winter (November-January), the North Pacific kicks into high gear, sending NE and ENE swell into the region. While this swell doesn't align perfectly with the south-facing beach – it can still produce rideable, often fun-sized waves (0.5-1.5m) particularly when the wind is clean. Offshore wind frequency remains solid (59-62%), but the swell direction is less than ideal, so you have to pick your moments. The spring months (April-June) flip the script: the swell direction improves dramatically, with SSW and S accounting for over 85% of the energy, and wave periods climbing above 13 seconds. However, the wind patterns become more fickle, with ideal offshore rates dropping to 45-52%. This means you'll often need a northerly breeze early in the day to score the best quality, but when it all lines up, the waves can be absolutely world-class.
Low Surf Season (February - March)
The late winter and early spring lull is the quietest period for San Augustin. Although the average swell height holds steady around 1.5m and periods are still long (12-13 seconds), the split in swell direction hurts consistency. A significant portion of the energy comes from the NE and ENE quadrant – which wraps in with less power and form on this south-oriented beach. Simultaneously, the wind patterns become less reliable for surfers: the percentage of ideal offshore wind drops to 47-53%, while onshore and cross-shore winds from the WSW, W, and SW increase their grip. This often leads to bumpy, lumpy conditions, especially in the afternoon. The result is a season of frustrating potential – the swell is there, but waiting for a clean window becomes a game of patience. March is particularly tricky as the trade winds strengthen. Still, keen surfers can find the odd morning glass-off when a winter swell lines up right.
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Conditions at San Augustin in December
December: Winter Swell Sets In
December fully commits to winter. Average swell height settles to 1.4m, and the period drops to 11.2s – average but still rideable. Swell direction is a split personality: NE (18.2%) and ENE (14.7%) from winter storms, along with S (16.8%) and SSW (24.3%) from the Southern Hemisphere. The optimal directions now total about 45%. This is the lowest percentage of good-angle swell of the year. Wave heights from the NE quadrant are mostly in the 1-2m range, but they arrive with poor alignment and often weak form. The S/SSW swell, while smaller in percentage, still provides the best waves when it lines up. Wind is ideal 60% of the time – very good. Light NW (11.9%), WNW (12.3%), and NNW (9.2%) winds are common, providing clean surfaces on many days. The challenge is the lack of quality swell direction. If you catch a day with a decent SSW pulse and a light offshore, you can enjoy fun, punchy waves. But overall, December requires patience and a willingness to surf smaller, more jumbled sets.
Average Spot conditions at San Augustin in December
Swell history for December
Wind history for December
Swell quality
Analyze the groundswell consistency at San Augustin 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 San Augustin for your next trip in December.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at San Augustin 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 San Augustin.
