Conditions at Monobegawakakou in September
September: Prime Time - Long Period Swell and Clean Winds
September is the best all-round month on the calendar. Average period climbs to 9.3s, ideal wind jumps to 46%, and the swell direction is beautifully aligned for the south-facing beach. SE (29.0%), ESE (22.9%), SSE (22.1%) and S (15.5%) feed the coast with a mix of tropical cyclone leftovers and early-autumn frontal swells, including solid 3-8ft (1-2.5m) contributions from SE, SSE and S. Meanwhile the wind regime shifts back toward the offshore quadrant: NNW (13.2%), NNE (11.2%) and NE (8.2%) combine with NW (3.4%) to groom the ocean, while SSW wind fades to 7.9%. Water remains warm at 27.1°C, air cools slightly to 23.5°C, and the rainfall is still high but punctuated by clean post-frontal windows. This is the time to chase the peak of the typhoon season with a shortboard and a smile - if the swell and wind line up, Monobegawakakou turns from average to memorable.
Average Spot conditions at Monobegawakakou in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Monobegawakakou during September. 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 Monobegawakakou for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Monobegawakakou for September. 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 Monobegawakakou.