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Conditions at Hermosa Beach in January
January: Winter Groundswell and Offshore Windows
Swell directions are heavily concentrated in the W (58.9%) and WSW (27.6%), with another 8% from SW and 2.2% from WNW. That places almost the entire month inside Hermosa's optimal swell window. Average wave height is 0.8m (2.6ft) but the average period is 12.4s, so the energy is far from messy; a large share of the W/WSW swells sit in the 0.5-1m range, and roughly 20% of the month produces 3-8ft (1-2.5m) surf. Winds are ideal 33% of the time, mostly from the NE/ENE/E/ESE quadrants, which flow straight offshore. With air temps around 11.8°C and water at 14.0°C, it is proper winter surf; expect clean, long-period lines when the offshore window lines up.
Average Spot conditions at Hermosa Beach in January
Swell history for January
Wind history for January
Swell quality
Analyze the groundswell consistency at Hermosa Beach during January. 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 January.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Hermosa Beach for January. 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.