Conditions at Sendai in October
October: The North Pacific Wakes Up and Sendai Turns On
October is the true start of the best season. The average swell height is 3.5ft (1.1m), the period climbs to 9.3s, and ideal wind jumps to 48%. E and ESE swells dominate - ESE (31.1%), E (25.0%), SE (17.3%) and ENE (7.4%) - as the Aleutian Low strengthens and mid-latitude storms begin firing across the Northwest Pacific. At the same time, the Siberian High starts to push westerly and northwesterly winds offshore. The result is a rapid increase in clean, long-period surf. Water temp is still very pleasant at 20.0°C, and air temps average 15.2°C. The combination of building swell, improving wind and mild conditions makes October a standout month for Sendai.
Average Spot conditions at Sendai in October
Swell history for October
Wind history for October
Swell quality
Analyze the groundswell consistency at Sendai during October. 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 Sendai for your next trip in October.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Sendai for October. 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 Sendai.