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Conditions at Stimpy's in September
September: The Magic Transition
September is the first true fire-alarm month. The southwest monsoon still supplies offshore SSW-SW-W winds 53% of the time, while the average swell rises to 0.8m (2.6ft) and the period jumps to 9.5s - a sign of better-organized ocean swell. Direction is more varied than in summer: NE (27.1%), ENE (22.7%), and NNE (11.4%) all contribute, with the 0.5-1m (1.6-3.3ft) class dominant and a solid 1-1.5m (3.3-4.9ft) component appearing. This is the start of the season when Stimpy's can offer clean, offshore, chest-high waves with actual push. The offshore wind sector from SW through W accounts for a significant share of observations, and ideal conditions reach 53%. Air temperature is 28.0°C, water is 29.5°C, and precipitation is 6.3mm/day. Watch the forecast for the first North Pacific lows - the payoff can be excellent.
Average Spot conditions at Stimpy's in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Stimpy's 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 Stimpy's for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Stimpy's 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 Stimpy's.