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Conditions at Dungeons in May
May: The Roaring Forties Deliver
May is when Dungeons shifts into another gear. The average swell height jumps to 8.5ft (2.6m), the wave period reaches 12.4s, and the incidence of XL swell topping the 8ft (2.5m) mark from the SW to WSW direction becomes much more noticeable. SW is the clear engine at 25.7%, followed by WSW (11.9%) and SSW (11.8%), and there is a strong concentration in the 5-8ft (1.5-2.5m) band that keeps the reef loaded. On the wind side, the typical summer SSE flow begins to erode. SSE drops to 16.8%, SE to 14.3%, while NNW (20.7%) and NW (8.6%) winds become a regular feature, bringing cooler, drier air and, crucially, more offshore or cross-offshore line. Ideal N-NE wind jumps to 21% - the best yet. With air temps averaging 16.5°C (11.8-24.6), water at 16.0°C, and 1.57mm/day of rain, May delivers the most balanced combination of size, period, and clean wind since last winter. This is the beginning of the true big-wave season.
Average Spot conditions at Dungeons in May
Swell history for May
Wind history for May
Swell quality
Analyze the groundswell consistency at Dungeons 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 Dungeons for your next trip in May.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Dungeons 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 Dungeons.