Sayulita seasonal overview
Best Surf Season (November - March)
Sayulita, with its north-northwest exposure, truly comes alive during the winter months. A powerful procession of North Pacific storms generates long-period swell from the WNW and NW quadrants, delivering consistent, well-formed waves in the 1-1.5m fun-to-head-high range. The average wave period hovers around 13.5 seconds, meaning the energy is substantial and the ride is long. However, the high pressure over the mainland often funnels cool, northerly winds (N, NNW) straight into the bay, creating choppy, onshore conditions a majority of the time. Ideal surfing windows are rare – often just a few percent of the month – but when a weak southerly breeze (SO, S, SSO) sets up during a lull in the trade winds, the result is glassy, peeling waves that make this stretch of coast a world-class winter destination.
Fair Surf Season (April - May & October)
During the transitional months, the jet stream shifts northward and the dominant swell source begins to rotate. In April and May, the swell becomes more westerly and even SW in origin, which is not ideal for Sayulita's orientation. Waves are generally smaller (0.5-1.5m) and less consistent, though the wind patterns start to improve slightly with more light offshore (SSW, SW) periods. October sees the return of longer-period swells as the first autumn storms develop, but the direction remains often too far south (WSW, SW). The wind is a mixed bag – mornings can be calm and offshore, while afternoons fill in with onshore flow. It's a season of careful timing: if you catch a day with a solid WNW pulse and a light south wind, you can score fun, rippable waves.
Low Surf Season (June - September)
Summer brings a complete regime change. The Pacific storm track retreats far to the north, leaving Sayulita exposed to south and southwest swells generated by distant Southern Hemisphere storms and regional tropical activity. This directional mismatch means the bay sees mostly small, weak waves – often under 1m – with a very low rideable percentage. The one silver lining is the wind: the summer monsoon and thermal patterns create a higher frequency of offshore southwesterly winds (ideal directions), particularly in the mornings. Even so, the swell quality is poor. Only a rare, well-aligned WSW groundswell with a period over 14s can produce a handful of decent waves, but the consistency is frustratingly low.
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Conditions at Sayulita in December
December: The Winter Peak Returns – Big Waves, Tough Wind
December is the start of the prime winter season. The swell rose is dominated by WNW (44.5%) and W (37.1%), with a significant 22.8% of WNW waves in the 1-1.5m range. The average swell height is 1.0m, and the period is 13.4s, producing long, powerful lines that wrap beautifully into the bay. This is the month where Sayulita shows its true potential. However, the wind is the familiar adversary: N (32.2%) and NNE (21.9%) winds dominate, often at 10-20kph, creating lumpy conditions. The ideal wind percentage is only 5%, so clean surf is rare. But when the pattern aligns – a strong WNW swell with high pressure setting up gentle SSW or S winds – the waves are as good as it gets in Sayulita. December is a month of extremes: you'll either be battling onshore chop or scoring epic, glassy, head-high+ sets.
Average Spot conditions at Sayulita in December
Swell history for December
Wind history for December
Swell quality
Analyze the groundswell consistency at Sayulita 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 Sayulita for your next trip in December.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Sayulita 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 Sayulita.
