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Conditions at Petacalco in January
January: Clean, Low-Margin Southern Groundswell
January is the heart of the dry season at Petacalco, and while the wave heights are on the smaller side, the quality can be high. Swell data shows an average height of 0.9m (3ft) with a long 13.1s period, and the energy comes almost exclusively from the S/SSW/SW/WSW quadrant: SSW delivers 38.5% and SW 39.5% of the waves, with another 18.1% from WSW. That puts the beach right in the sweet spot for its southeast-facing orientation. Most of the swell sits in the 0.5-1m (1.6-3.3ft) groveling-to-fun range, though a few 1-1.5m (3.3-4.9ft) peaks appear thanks to the strong SSW/SW distribution. Winds are light and variable for January, with ideal conditions reported around 59% of the time. Expect morning offshore or calm NW/WNW/NNW flows to groom these long-period SSW lines into playful, rippable waves. Air temperatures average 24.9°C (15.2-34.0°C), rain is scarce at 0.53mm/day, and the 28.1°C water means a thin wetsuit or just boardshorts.
Average Spot conditions at Petacalco in January
Swell history for January
Wind history for January
Swell quality
Analyze the groundswell consistency at Petacalco during January. 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 January.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Petacalco for January. 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.