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Conditions at Isla Chepillo in May
May: First South Swell Pulse
The surf climate shifts noticeably in May. The average wave height edges up to 0.4m (1.3ft), and for the first time a meaningful chunk of SSW swell reaches 0.5-1m (1.5-3.3ft), with 12.1% of all waves in that range and even a tiny 0.1% reaching 1-1.5m (3.3-5ft). SSW now makes up 96.4% of the swell direction, which is excellent for the southwest-facing beach. The average period remains healthy at 11.0s, so there is more shape in the water. The problem is wind: the dry-season trades collapse, and N/NNE flow drops to around 22%, while S/SW onshore winds appear 26.5% of the time. Surfable conditions are limited to early mornings when nearshore north winds or light offshore breezes coincide with the south swell. Ideal conditions remain rare at 2%. Air temps average 27.7°C, rainfall jumps to 7.06mm/day, and water temp climbs to 28.5°C.
Average Spot conditions at Isla Chepillo in May
Swell history for May
Wind history for May
Swell quality
Analyze the groundswell consistency at Isla Chepillo 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 Isla Chepillo for your next trip in May.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Isla Chepillo 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 Isla Chepillo.