Rio de Coyula • Surf Spot Statistics

Best Surf Season (May - September)

As the North Pacific surf machine winds down, the South Pacific storm track fires up, and Rio de Coyula's south-facing beach becomes a magnet for consistent, long-period SSW and SW groundswells. Average wave heights climb to 1.6-1.7m (5-6ft) and periods sit reliably between 13.2 and 14.2 seconds during this stretch - powerful, organized lines that wrap cleanly into the bay. Offshore N and NW flow is common in the mornings, and even though this is the rainy season, the morning window frequently delivers glassy conditions before the thermal sea breeze kicks up. This is the heart of the year for quality surf at Rio de Coyula.

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

The transition months still offer plenty of south swell, but the consistency and wind quality get more complicated. March and April see the first strong injections of SSW/SW groundswell as average heights build from 1.4m to 1.5m (4.5-5ft), yet ideal wind days drop to 44-47 percent as west and southwest flow becomes more frequent. October and November are the back side of the swell peak: the ocean remains warm at 28-29°C, SSW swell still makes up more than 40 percent of the spectrum, and wind consistency returns, but the average size slowly loses its summer punch.

Low Surf Season (December - February)

Winter marks the lowest swell window on this south-facing coast. The North Pacific is alive with storms, but the energy is mostly aimed from the northwest - a direction that Rio de Coyula cannot see directly. Average swell heights fall to 1.2-1.3m (4-4.3ft) and period drops to around 12 seconds as E/SE windswell mixes into the SSW groundswell. That said, the dry season brings clear skies, light winds, and warm 27°C water, and when a true S/SW groundswell slips through the pattern, the resulting winter sessions can be glassy, uncrowded, and better than the averages suggest.