Conditions at Niijima in November
November: Transitional Power and Shifting Winds
November carries a lot of October's swell memory. Average height stays at 1.6m (5ft), period falls slightly to 7.7s, and the optimal quadrant remains strong at 53.4%. ENE is the top direction at 18.4%, E follows at 16.0%, ESE at 9.9%, and SE at 5.4%. The western sector also starts reappearing - WSW 7.3%, W 13.2% - as winter low-pressure systems punch through the Sea of Japan.
Wind patterns become more mixed. NE is still the most frequent enemy at 16.2%, with ENE at 11.7%, but offshore W jumps to 15.3%, WNW to 10.1%, and WSW to 6.0%. Ideal wind is 12%. The turning point: strong W/NW monsoons return, and when they blow offshore, they groom the ENE/E swell into clean, hollow walls. Cooler air (18.1C) and water (22.8C) signal the onset of winter, but the tropical-midlatitude mix in November can produce some of the most powerful long-period events before December's short-period windswell takes over. Rain eases to 4.37 mm/day.
Average Spot conditions at Niijima in November
Swell history for November
Wind history for November
Swell quality
Analyze the groundswell consistency at Niijima during November. 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 Niijima for your next trip in November.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Niijima for November. 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 Niijima.