Conditions at Oniguchi in July
July: Monsoon Miseries
July is the low point for wind quality at Oniguchi. Ideal offshore wind arrives only 21% of the time-the lowest of the year. Average swell height holds at 1.0m (3.3ft), and the average period increases slightly to 7.6s. The swell direction is actually favorable on paper: SW is 23.8%, WSW is 15.1% and SSW is 14.5%. But the wind is blowing from the same quadrant, with SW at 14.2%, WSW at 12.4% and SSW at 10.7%. Air temperature averages 27.1°C, water temperature is warm at 27.0°C, and precipitation remains significant at 10.79 mm/day. The result is a classic onshore summer pattern: plenty of southwest swell, but short-period, surface-choppy and hard to ride. Unless a typhoon passes close enough to shift winds offshore, July is best reserved for other activities.
Average Spot conditions at Oniguchi in July
Swell history for July
Wind history for July
Swell quality
Analyze the groundswell consistency at Oniguchi 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 Oniguchi for your next trip in July.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Oniguchi 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 Oniguchi.