Rio de Coyula - surf spot statistics

Best Surf Season (May - September)

The heart of the south swell season arrives in May and continues through September as powerful storms in the Southern Hemisphere generate long-period groundswell that march thousands of miles north to consistently hit Rio de Coyula's south-facing beach. Average wave heights settle in the 1.5-1.7m range with periods well above 13 seconds, delivering solid, rippable waves day after day. The offshore wind regime prevails, with the North Pacific high-pressure system dominating and funneling clean N to NW winds across the break. This is prime time for surfing.

Fair Surf Season (October - February)

As the Southern Hemisphere storm track weakens, average swell heights drop to around 1.2-1.5m, but the wave period remains long (12-13s), keeping the surf quality high. The dominant swell direction remains from the SSW-SW, though occasional pulses of ENE background swell from distant North Pacific fronts add variety. Offshore winds are still frequent, especially in November and December when the continental high pressure sets in. While the surf is smaller, it remains fun and grovel-worthy on the better days.

Low Surf Season (March - April)

The transition months of March and April see a dip in both swell consistency and wind reliability. The average wave height holds around 1.4-1.5m, but the percentage of favorable offshore winds drops to its lowest annual levels (44-47%). The typical pattern involves a battle between lingering winter winds and building summer breezes, often resulting in onshore flow from the south. Still, occasional long-period SSW groundswell can reward those who pick the right day, offering punchy, clean waves when conditions align.

November: Smaller but Clean – A Surfer's Delight

November sees average swell drop to 1.3m but period holds at 12.7s, keeping the quality high. Swell is still primarily from SSW (42%) and S (27.3%). The wind hits its best reliability at 62% ideal, with a dominant NW and NNW flow creating clean, glassy conditions. The waves are smaller – fun-sized and groveling – but the consistency and cleanliness make up for it.