Conditions at Hokkaido in August
August: Typhoon Season's Reluctant Promise
August is the most interesting summer month. The average wave period peaks at 8.8s, the average height nudges 2-3ft (0.8m), and the ideal wind window improves to 16%. SSE swell (57.1%) and SE swell (29.7%) continue to dominate, but now some of that energy comes from typhoons spinning up in the western Pacific. Those systems can deliver more powerful 3-5ft (1-1.5m) SSE/SE swell, and if the wind shifts into the N/NNW quadrant after a typhoon passes, the SSW-facing beach can actually turn on. The catch is that prevailing SSE winds still blow onshore about half of the time. Still, August offers the best low-season potential and is the month to watch during typhoon season. Water temp is 20.2°C.
Average Spot conditions at Hokkaido in August
Swell history for August
Wind history for August
Swell quality
Analyze the groundswell consistency at Hokkaido 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 Hokkaido for your next trip in August.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Hokkaido 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 Hokkaido.