Conditions at Yin Yang in September
September: The Monsoon Holds Its Ground
September keeps the southwest monsoon alive, though the period dips slightly to 6.9s. Ideal wind remains at 53%, with W (24.6%) and WSW (21.8%) still providing excellent offshore flow for Yin Yang. Swell direction is still heavily south-based: SSE 35.4%, S 23.8%, SSW 16.8%, SW 12.9% and WSW 5.5%. Average height is a solid 1.3m (4.3ft), and there is still a meaningful amount of 1.5-2m (5-6.5ft) energy from the S, SSW and SW quadrants. September is a good month for surfers who want the power of the southwest monsoon without the extreme wind strengths of late spring. It is the last month of the year that delivers truly reliable, clean, rippable waves before the monsoon begins to fade.
Average Spot conditions at Yin Yang in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Yin Yang 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 Yin Yang for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Yin Yang 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 Yin Yang.