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Conditions at Cottosloe in January
January: Peak Summer - SW Swell Machine, Onshore Sea Breeze
January is classic mid-summer for Cottosloe, and the swell clocks in at a respectable 1.9m (6.2ft) average with a period of 11.6 seconds. The direction tell the story: SSW and SW combine for over 81% of the wave energy, with only a tiny sliver of the more favourable WSW/W directions. This means the break sees plenty of south-west groundswell, but the angle is often too far south, wrapping less cleanly onto the west-facing sand. The bigger issue is wind - ideal offshore breezes from the ESE/SE only occur 26% of the time. Instead, a strong SSW component (25%) and S winds (14.5%) dominate, putting a persistent side-shore chop on the face. Water temp sits at 22.0°C with warm air around 22.9°C, so summer rubber is optional, but plan for early dawn sessions when the morning easterly kicks in before the seabreeze ruins it.
Average Spot conditions at Cottosloe in January
Swell history for January
Wind history for January
Swell quality
Analyze the groundswell consistency at Cottosloe 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 Cottosloe for your next trip in January.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Cottosloe 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 Cottosloe.