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Conditions at Gnaraloo in May
May: The Winter Engine Starts
May is where Gnaraloo's season really turns on. The average wave period jumps to 13.8s, height holds around 4-5ft (1.2-1.4m), and ideal wind reaches 35%-the highest of the year. Swell direction shifts further into the SW (57.7%) and SSW (25.8%) quadrants, and the southern quadrant now generates more 5-8ft (1.5-2.4m) groundswell. The long-period energy compensates for the less-than-perfect angle, and winds become more variable between SE, SSE and S, producing cleaner morning sessions and a more lined-up feel. Water is still a pleasant 26.2°C, air drops to 22.7°C, and rainfall is modest at 0.74 mm/day. Late autumn is prime time: the Indian Ocean has switched on, and the wind hasn't yet reached full winter strength.
Average Spot conditions at Gnaraloo in May
Swell history for May
Wind history for May
Swell quality
Analyze the groundswell consistency at Gnaraloo 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 Gnaraloo for your next trip in May.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Gnaraloo 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 Gnaraloo.