Conditions at Kugenuma in July
July: Peak Summer Doldrums
July is the slowest month at Kugenuma. Average swell height remains 0.7m and the period improves slightly to 8.3s, but that is still far from powerful. Swell directions are overwhelmingly from the S (32.7%) and SSW (30.2%), with SSE at 19.3%. The wind pattern is the opposite of winter: SSW is the single largest wind direction at 22.2%, with SW at 14.4% and S at 13.9%. These are exactly the directions that ruin wave quality at this beach. Only 14% of the time is ideal. The water is warm at 24.2°C and air temperatures average 24.6°C, but warm does not mean good. The Pacific high and monsoon trough dominate the regional weather, locking in the southerly flow. Typhoons are still mostly south of Japan, and any swell they generate is often swallowed by onshore winds. When the rare N/NNE wind line lines up with a south pulse, Kugenuma can deliver clean but small waves; otherwise, it is a battle against bump and chop.
Average Spot conditions at Kugenuma in July
Swell history for July
Wind history for July
Swell quality
Analyze the groundswell consistency at Kugenuma during July. 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 July.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Kugenuma for July. 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.