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Conditions at Pichilemu in May
May: The Winter Bulge Begins
May marks the real change in Pichilemu's surf climate. The average swell height creeps up to 1.7m (5.6ft), the wave period remains a solid 12.7s, and the swell window broadens: WSW drops to 53.3%, SW contributes 23.2% and W/WNW pushes in at 13.4% and 2.3% respectively. This is the first month where a noticeable amount of swell reaches the 2-2.5m (6.6-8.2ft) range (16.8%), so there is more raw energy in the water. The trade-off is wind quality. Ideal offshore wind drops to 64% as N (4.6%), NNE (10.1%), NE (4.8%) and NNW (6.4%) onshore winds become more common. With 2.48mm/day of rain and air temps down to 12.4°C, May is the start of the season where you need to pick your days carefully and watch for the backside of winter lows that flip the wind south.
Average Spot conditions at Pichilemu in May
Swell history for May
Wind history for May
Swell quality
Analyze the groundswell consistency at Pichilemu 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 Pichilemu for your next trip in May.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Pichilemu 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 Pichilemu.