Conditions at Shonan in May
May: Summer South Swell, Summer Onshore Wind
May sees Shonan lock into a south-swell regime that will last through the summer. S (25.8%) and SSE (24.7%) lead the wave rose, with SSW (18.6%) and SE (16.0%) close behind, meaning the swell direction is almost perfect on paper. Unfortunately the size is small -- average 2.3ft (0.7m) at 7.8s -- and the wind becomes the limiting factor. The sea breeze machine fires up earlier each day, with SSW (19.3%), S (12.9%) and SW (11.9%) winds raking the surface onshore; ideal windows drop to 16%. Water temperature rises to 18.7C and air averages 16.9C, but precipitation increases to 4.45mm/day as the spring rainy season approaches. There are still plenty of groveling, fun-sized waves for a log or a fish, but clean, lined-up Shonan sandbar waves become harder to find.
Average Spot conditions at Shonan in May
Swell history for May
Wind history for May
Swell quality
Analyze the groundswell consistency at Shonan 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 Shonan for your next trip in May.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Shonan 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 Shonan.