Conditions at Omaezaki in August
August: Typhoon-Powered Groundswell, But Wind Is the Catch
August is the deepest part of the Japanese typhoon season, and the swell statistics reflect it. Average wave height bumps back to 1.3m, and the period climbs to 9.2s, tied with September for the longest of the year. ESE (9.6%), SE (18.2%), SSE (21.1%), S (19.8%) and SSW (17.8%) create a hugely southern sea state, with noteworthy amounts of 2-2.5m energy from the SSE/S/SW directions. This is serious, organized swell.
Yet the wind rose keeps quality in check. ENE (12.0%), E (15.0%), WSW (15.2%) and SW (14.4%) are all onshore or cross-shore, and the ideal wind percentage sits at only 18%. The real mission in August is to find a typhoon that tracks offshore enough to swing winds north, because the ocean temperature is a warm 26.7°C and air averages 26.9°C. When that alignment clicks, Omaezaki can be heavy and firing. Precipitation eases slightly to 5.02mm/day.
Average Spot conditions at Omaezaki in August
Swell history for August
Wind history for August
Swell quality
Analyze the groundswell consistency at Omaezaki during August. 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 August.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Omaezaki for August. 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.