Conditions at Yo-Yos in May
May: Bigger Swell, Changing Game
May is the transition month where the swell size increases noticeably. The average swell height jumps to 1.5m (5ft / 1.5m) and the period extends to a very powerful 14.2s - this is long-range, heavy groundswell. The direction locks in from the SSW (66.5%), with a significant chunk of energy in the 1.5-2m range and 5% in the 2-2.5m (6.5-8ft) category. However, the southeast trades are now in full swing, with ESE winds at 47.3% and SE at 30.5%, dropping ideal wind frequency to just 24%. Clean sessions are limited to early mornings and the occasional lull in the trades. The weather becomes much drier (2.09mm/day), air temps cool slightly to 26.0°C, and water remains warm at 29.1°C. When you catch it clean, the extra size and power are well worth the effort.
Average Spot conditions at Yo-Yos in May
Swell history for May
Wind history for May
Swell quality
Analyze the groundswell consistency at Yo-Yos 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 Yo-Yos for your next trip in May.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Yo-Yos 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 Yo-Yos.