Conditions at Hokkaido in April
April: Onshore Direction, Offshore Hope
April is a lesson in direction versus wind. The swell compass is almost perfect for Hokkaido: SSE (42.6%), S (18.7%), SE (14.1%) and SSW (10.2%) dominate, and the average period is 8.2s. But the wind rose is dominated by S, SSW and SW winds, all onshore and all capable of chopping the surface to pieces. The ideal wind figure drops to just 14%, so clean sessions are the exception rather than the rule. When a lingering winter high sits to the north and a storm lingers east, the SSE pulses can wrap into the beach under NW offshore wind, producing some surprisingly fun 3-5ft (1-1.5m) waves. Air temps average 4.8°C, water temp is 5.4°C and spring precipitation is on the rise.
Average Spot conditions at Hokkaido in April
Swell history for April
Wind history for April
Swell quality
Analyze the groundswell consistency at Hokkaido during April. 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 April.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Hokkaido for April. 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.