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Conditions at Yallingup in May
May: Bigger Swell, Cleaner Winds and Maximum Quality
May delivers Yallingup at its best. Average swell height jumps to 7.5ft (2.3m) and period holds steady at 12.9s, but the key change is direction. WSW swells jump to over 16 percent, W adds 5 percent, and NW/WNW components begin contributing, so the west-northwest-facing coast is now being hit by both direct and refracted energy. Even though SW still supplies a third of the total, the mix creates the kind of staged, lined-up waves that make Yallingup's reefs shine.
The offshore wind window remains generous at 26 percent, second only to April, while the post-frontal ESE/SE flow is often clean and light. Air temperatures drop to 18.2 degrees C (min 12.9, max 24.0), water temperature is a still-mild 20.4 degrees C, and rainfall increases to 2.70mm/day as frontal systems become more active. This is peak season in every sense: powerful, rippable and far less storm-ravaged than midwinter.
Average Spot conditions at Yallingup in May
Swell history for May
Wind history for May
Swell quality
Analyze the groundswell consistency at Yallingup 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 Yallingup for your next trip in May.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Yallingup 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 Yallingup.