Conditions at Leblon in May
May: Peak Autumn Power and Long-Period South Swell
May is one of Leblon's strongest months. Average swell height climbs to 1.5m (5ft), and the average period lengthens to 11.0s - proper groundswell. S swell dominates with 36.5%, followed by SSE 25.4%, SE 15.8% and SSW 9.2%. Approximately 39% of the recorded swells are 1.5m (5ft) or larger, and S alone produces 18.4% of those bigger sets, with SSW adding 7.4% in the 1.5-2.5m range. Ideal wind is 52%, though SW and WSW winds increase to 18.4% as autumn lows pull through. Air temps average 22.2°C, water is still warm at 23.2°C, and rainfall is only 2.61 mm/day. When the cold front passes and the wind clocks northwest, May delivers peaky, powerful surf along Leblon.
Average Spot conditions at Leblon in May
Swell history for May
Wind history for May
Swell quality
Analyze the groundswell consistency at Leblon 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 Leblon for your next trip in May.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Leblon 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 Leblon.