Conditions at Kugenuma in October
October: The Autumn Switch Delivers Clean Windows
October is arguably Kugenuma's most consistent surfing month. The ideal-wind frequency peaks at 20%, the highest of the year. The wind rose is dominated by NNE (32.3%), NE (15.1%) and N (12.2%), while SSW and SW winds drop to just 6.1% and 6.3%. That is a huge shift from summer and creates frequent offshore, glassy mornings. Swell direction is a bit more easterly than pure south: SE is the leading direction at 17.3%, with SSE (14.7%) and S (11.8%) close behind, plus ESE at 11.4% and SSW at 8.7%. The average period of 8.7s shows lingering typhoon energy mixing with the first autumn fronts. Average height is still only 0.7m, so it is not a big-wave month, but the quality is high: clean, punchy peaks in the 2-3ft (0.6-0.9m) range, with occasional bigger sets when a typhoon remnant or extratropical low aligns. Air temperatures are pleasant at 16.1°C, water is warm at 22.9°C, and early autumn rains at 6.51 mm/day are part of the recipe. When the pressure gradient tightens over the western North Pacific, Kugenuma turns into a fun, rippable beachbreak.
Average Spot conditions at Kugenuma in October
Swell history for October
Wind history for October
Swell quality
Analyze the groundswell consistency at Kugenuma during October. 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 Kugenuma for your next trip in October.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Kugenuma for October. 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 Kugenuma.