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Conditions at Hermosa Beach in October
October: Transition as Long-Period Windows Return
October is where the season begins to turn. The average period jumps to 12.9s, the highest of the year, and the W component grows again: W 16.4%, WSW 38.8%, SW 34.9% and SSW 9.3%. Average height dips slightly to 0.7m, but the percentage of 1m+ events climbs back toward 10% as the Aleutian Low starts to spin up. Ideal offshore wind improves to 23%, with NE/ENE/E/ESE flow becoming more regular. Air averages 19.4°C, water is 17.3°C, and rain remains low. Early-season W groundswell under clean offshore winds is a serious sign of what is coming.
Average Spot conditions at Hermosa Beach in October
Swell history for October
Wind history for October
Swell quality
Analyze the groundswell consistency at Hermosa Beach during October. 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 Hermosa Beach for your next trip in October.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Hermosa Beach for October. 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 Hermosa Beach.