Conditions at Inamuragasaki in August
August: Typhoon Swell Potential Meets Long Periods and Onshore Winds
August brings the longest average wave period of the year at 9.3s, along with an average swell height of 0.8m (2.6ft). This translates to more powerful, longer-period groundswell character than the rest of summer, often spun up by typhoons tracking through the western Pacific. The swell direction is again overwhelmingly from S (32.0%), SSE (28.4%) and SSW (19.5%) - ideal for the beach's exposure - and there are slightly more 1-1.5m (3.3-4.9ft) waves than in previous months. However, the wind remains a major obstacle: onshore SSE/S/SSW/SW winds account for about 56% of the time, with SSW (21.4%) and SW (12.7%) dominating the stronger bins. Offshore wind is only around 26%, and ideal conditions sit at 14%. Water temperature peaks at 26.5°C with air at 25.6°C, and precipitation averages 4.73 mm/day. If you can find a window after a typhoon passes and the wind swings offshore, August can serve up the most powerful surf of the summer.
Average Spot conditions at Inamuragasaki in August
Swell history for August
Wind history for August
Swell quality
Analyze the groundswell consistency at Inamuragasaki during August. 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 Inamuragasaki for your next trip in August.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Inamuragasaki for August. 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 Inamuragasaki.