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Conditions at Manhattan Beach in September
September: First Taste of Autumn, Long Periods and Warm Water
September is a transitional month with a hint of hope. The average size stays at 2-3ft (0.8m), but the period remains long at 12.6 seconds, and the swell mix is still dominated by SW at 36 percent and WSW at 39 percent, with SSW 13 percent and W 11 percent. Southern-Hemisphere swells are still active while early North Pacific lows begin to appear. Wind is still an issue, with ideal conditions at only 30 percent and onshore WSW/SW/W winds near 42 percent, but the sea breeze tends to be weaker than in July and August. Sea surface temperature peaks at 17.8°C - the warmest water of the year - and air temps hang near 22.9°C with almost no rain. This month rewards flexible surfers: find an early glass-off or a wind-sheltered bend in the beach and the long-period energy is genuine.
Average Spot conditions at Manhattan Beach in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Manhattan Beach 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 Manhattan Beach for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Manhattan Beach 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 Manhattan Beach.