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Conditions at Petacalco in December
December: Small but Sleek Year-End Waves
December is the cleanest month of the year at Petacalco, with ideal wind conditions about 62% of the time. The tradeoff is size: average swell height drops to 0.9m (3ft), though the 13.1s period still gives the SSW (56.3%) and SW (32.7%) swells a long-period push. Expect mostly 0.5-1m (1.6-3.3ft) groveling waves, with about a third of the surf reaching 1-1.5m (3.3-4.9ft) on the better SSW pulses. The dry season is in full effect, with only 0.18mm/day of rain, warm 28.4°C water, and air temperatures averaging 25.2°C. The lack of wind makes even the smaller days incredibly user-friendly and the year ends on a clean note.
Average Spot conditions at Petacalco in December
Swell history for December
Wind history for December
Swell quality
Analyze the groundswell consistency at Petacalco 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 Petacalco for your next trip in December.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Petacalco 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 Petacalco.