Conditions at Kugenuma in June
June: The Summer Lull and South Windswell
June settles into the heart of the southern windswell season. The swell rose is dominated by S (33.6%), SSW (24.3%) and SSE (20.5%) - all in the south quadrant, but almost entirely under 1m. The average height is 0.7m with a short average period of 7.8s, giving Kugenuma a soft, mushy character. Wind is the bigger issue: SSW (16.6%) and S (14.3%) are the primary onshore components, while SW adds 10.6%. Although NNE and NE are still present at 13.3% and 9.7%, the summer sea-breeze cycle almost guarantees afternoon deterioration. Only 16% of conditions are ideal. The air warms to 20.7°C, water reaches 21.4°C, and precipitation is high at 6.01 mm/day, often associated with the early summer rainy season. For a surfer, June is about managing expectations: look for early high tides, N/NNE wind, and any tropical or frontal swell that can inject a little power into an otherwise sleepy, small-wave lineup.
Average Spot conditions at Kugenuma in June
Swell history for June
Wind history for June
Swell quality
Analyze the groundswell consistency at Kugenuma during June. 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 June.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Kugenuma for June. 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.