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Conditions at La Isla in January
January: A Rare Window of Clean Summer Surf
January serves up a steady diet of long-period SSW groundswell. The average swell height is 1.4m (4.6ft) with a 13.0s period, and the direction chart is almost completely dominated by SSW (71%) and SW (28%) energy. This is exactly the southwest window La Isla's southwest-facing break is built to handle, producing powerful, lined-up peaks in the 3-6ft (1-1.8m) range.
The main issue is wind. True offshore flow from N, NNO, NO and ONO accounts for only 2% of the month. Instead, S, SSW and SW winds fill about 86% of the time, mostly under 10kph but occasionally pushing into the 10-20kph band. That keeps most of the surf bumpy and wind-affected, with the best conditions reserved for rare dawn patrols when the southerly flow eases.
With air temperatures between 16.7-26.3°C, minimal precipitation and 19.0°C water, a summer wetsuit is all you need while you wait for those fleeting clean windows.
Average Spot conditions at La Isla in January
Swell history for January
Wind history for January
Swell quality
Analyze the groundswell consistency at La Isla 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 La Isla for your next trip in January.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at La Isla 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 La Isla.