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Conditions at San Blas in April
April: Maximum Period, Minimum Wind Trust
April delivers the longest average swell period of the year at 14.1s, and the swell-direction stats are almost absurdly one-sided: 85.6% of all energy is from the SSW, and the combined S/SSW/SW/WSW total is 99.7%. The vast majority of waves sit in the 3-5ft (1-1.5m) range - 68.5% from SSW alone - and 9.1% of SSW energy reaches 5-6.5ft (1.5-2m). For pure southern hemi groundswell potential, this month is a standout.
But April is the low point of wind quality: only 40% ideal wind, with onshore S/SSW/SW/WSW flow at 34.7% and plenty of W/WNW cross-shore energy to ruffle things up. The offshore quadrant drops to 20.0%, and N/NE flow is mostly light. With air temps at 28.3°C, water at 29.7°C and rain ramping up to 1.06mm/day, April is all about patience. Wait for the morning offshore pulse and jump on those clean, lined-up SSW bombs - they are the best of the year.
Average Spot conditions at San Blas in April
Swell history for April
Wind history for April
Swell quality
Analyze the groundswell consistency at San Blas during April. 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 San Blas for your next trip in April.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at San Blas for April. 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 San Blas.