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Conditions at Yzerfontein in May
May: Winter Swell Machine Switches On
The South Atlantic winter engine is now firing. May sees average swell climb to 8ft (2.4m) with a meaty 12.4s period, while ideal wind jumps to 34% - the highest yet. Swell direction shifts a bit west: SW (32%) and WSW (14%) lead, with SSW (13%) adding plenty of punch. Onshore S flow crashes to 16%, SSE is 15%, and the N/NE sector plus a healthy NNW pre-frontal component becomes a regular player. Water is 14.9°C, air averages 16.0°C, and precipitation rises to 1.52mm/day as cold fronts roll through. Expect powerful, clean overhead surf on the better days, with proper winter bite in the air.
Average Spot conditions at Yzerfontein in May
Swell history for May
Wind history for May
Swell quality
Analyze the groundswell consistency at Yzerfontein 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 Yzerfontein for your next trip in May.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Yzerfontein 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 Yzerfontein.