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Conditions at Ferrugem in May
May: Prime Time Arrives
May is the official start of Ferrugem's prime season. The South Atlantic cold-front frequency ramps up, average swell height holds at 4.3ft (1.3m), and period jumps to 9.6s - the highest of the year. Ideal surf wind reaches 66%, a massive improvement from April. The swell direction spread is broad: SSE 18.9%, SE 17.4%, S 16.0%, ESE 16.8%, E 14.2% and ENE 10.1%. There is more south swell than summer, which can make conditions a little sandbar dependent, but the longer period makes even the E/SE pulses cleaner and more hollow.
Wind data shows why the lineup is so much better: NNW 15.6%, SSW 10.5%, SW 10.6%, plus healthy WSW/W/WNW/NW totals. With 66% ideal conditions, May delivers plenty of glassy mornings and lined-up, punchy surf in the 3-5ft (1-1.5m) range. Water temperature drops to 21.2°C, air to 17.9°C, and the lower humidity makes dawn patrol far more comfortable.
Average Spot conditions at Ferrugem in May
Swell history for May
Wind history for May
Swell quality
Analyze the groundswell consistency at Ferrugem 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 Ferrugem for your next trip in May.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Ferrugem 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 Ferrugem.