Conditions at Omaezaki in May
May: Small but Rippable South Swells
May is the start of the Pacific High regime. The average swell height drops to 1.1m, but the direction window is much more favorable: SE 19.9%, SSE 16.5%, S 12.5%, SSW 12.7% and SW 6.0% fill the sea with south quadrant energy. Unfortunately much of it is short-fetch windswell at 7.7s, so the 2-4ft waves can be sectiony and soft unless a more organized swell sneaks in. The S/SSW/SW window totals about 31%, the highest of the transition months, but E/ENE and WSW winds are frequent.
Winds see a strong ENE (13.2%) and E (12.7%) signal, along with WSW (12.3%) and SW (10.6%), all of which are less than favorable for groomed surfaces. Ideal wind improves to 20%, but May is more about summer suits and small, fun sessions than heavy payoff. Air warms to 19.1°C, water to 19.0°C, and rain stays high at 6.32mm/day. Keep the grovel board close.
Average Spot conditions at Omaezaki in May
Swell history for May
Wind history for May
Swell quality
Analyze the groundswell consistency at Omaezaki 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 Omaezaki for your next trip in May.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Omaezaki 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 Omaezaki.