Conditions at Taito in September
September: Typhoon Swells and Onshore Headwinds
September is the pivot month at Taito. Average swell height rises to 1.3m (4ft), the period holds at 9.1s, and the E (25.2%) and ENE (13.8%) directions start to take over, lifting the optimal swell share to about 40%. This is the start of the autumn groundswell season, with typhoons and transitioning tropical systems sending solid E/ENE pulses toward the Japanese coast. The major problem is wind. NNE (13.4%) and NE (19.3%) are the dominant surface flows, and onshore directions collectively reach about 50%, leaving the ideal-wind score at only 22%. Rain is abundant at 6.84 mm/day, and air temps are still warm at 24.2°C while water temps sit at 25.3°C. When a typhoon passes with an eye to the east and winds snap offshore, September can produce some of the best and most powerful waves of the year; on other days, it is a battle against onshore chop.
Average Spot conditions at Taito in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Taito during September. 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 Taito for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Taito for September. 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 Taito.