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Conditions at Esterillos in April
April: Green Season Transition, Peak Period Swell
The first month of the rainy-season transition, April, often serves up Esterillos' most powerful long-period surf. The average wave period rises to 14.0s, one of the longest of the year, and average height climbs to 4ft (1.2m). Directionally, things become even more concentrated, with SSW pumping in 97.8% of the swell. The real story is the jump in size: 78.1% of the surf now falls in the 3-5ft (1-1.5m) range and 6.3% pushes into the 5-6.5ft (1.5-2m) class. This is proper, powerful groundswell.
Wind quality begins to fade, with ideal surf wind dropping to 32%. Offshore flow from the northern quadrants weakens, while SSE (9.6%), SE (9.1%), S (9.6%), SSW (12.1%) and SW (10.4%) fill in more frequently. Still, all winds remain mostly in the 0-10kph class, and dawn patrol often provides clean windows before the seabreeze gets going. As the ITCZ reawakens, April sees the rainfall average jump to 2.99mm/day, with air temps of 27.6°C and increasingly warm water at 29.6°C.
Average Spot conditions at Esterillos in April
Swell history for April
Wind history for April
Swell quality
Analyze the groundswell consistency at Esterillos 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 Esterillos for your next trip in April.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Esterillos 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 Esterillos.