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Conditions at La Isla in May
May: Solid Winter Swell Meets Persistent South Wind
May sees La Isla entering the heart of the austral winter swell season. Average wave height jumps to 1.8m (5.9ft) and the period stays long at 13.6s. SSW direction is again the engine, producing 84% of the waves, with S and SW adding secondary pulses. This is consistent, powerful surf with a large share of 5-8ft (1.5-2.5m) waves rolling through the southwest-facing break.
Yet the quality equation is getting harder. Ideal offshore wind is down to 2%, and the wind rose is dominated by S (34%) and SSW (34%) flow, much of it in the 10-20kph band. These persistent onshore winds put a cap on how good La Isla can get; when a proper N/NNO/NO/ONO morning does align, the rewards are serious.
Autumn air temperatures range from 14-24.9°C, precipitation remains negligible, and the water cools to 17.0°C - surfable but with a crisp early-winter bite.
Average Spot conditions at La Isla in May
Swell history for May
Wind history for May
Swell quality
Analyze the groundswell consistency at La Isla during May. 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 La Isla for your next trip in May.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at La Isla for May. 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 La Isla.