Conditions at Inamuragasaki in May
May: Summer South Swell Arrives, Then Gets Blown Out
By May the oceanic pattern has flipped into a summer-like regime. The average swell remains 0.7m (2.3ft) with period 7.8s, but the direction is almost exclusively from the south: SSE (24.7%), S (25.8%) and SSW (18.6%) dominate, with SW reduced to nearly nothing. That gives Inamuragasaki a huge percentage of directional swell - just over 70% - but the wind statistics tell a less pretty story. Onshore SSE/S/SSW/SW winds blow approximately 49% of the time, and the strongest winds come out of SSW (19.3%) and SW (11.9%), exactly the directions that ruin the surface. Offshore flow drops to 31%, and ideal wind sits at only 16%. The result is small, wind-affected, lumpy surf for many days, with occasional clean windows under morning N/NNE breezes. Air temperatures are warmer at 16.9°C, water temperature climbs to 18.8°C, and precipitation averages 4.45 mm/day. Bring a smaller board and a positive attitude.
Average Spot conditions at Inamuragasaki in May
Swell history for May
Wind history for May
Swell quality
Analyze the groundswell consistency at Inamuragasaki 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 Inamuragasaki for your next trip in May.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Inamuragasaki 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 Inamuragasaki.