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Conditions at Cottosloe in March
March: Autumn Transition - Longer Periods and More Offshore Flow
March marks the first real shift toward autumn quality. Average wave height remains 1.8m (5.9ft), but the period lengthens to 12.4s, adding punch to the swell. Directionally, SW swell dominates at 50.3%, but WSW has grown to 3.9% - still small, but a sign that the swell angle is beginning to rotate toward the ideal. Wind conditions improve markedly: ideal offshore flow (ESE/SE/E) jumps to 35%, with ESE (13.5%) and E (12.8%) as leading players. This creates more frequent glassy, offshore mornings. Air temps ease to 22.4°C, water holds at 22.2°C, and precipitation is still minimal. It's a classic pre-winter month - some great days are mixed with lingering summer patterns.
Average Spot conditions at Cottosloe in March
Swell history for March
Wind history for March
Swell quality
Analyze the groundswell consistency at Cottosloe during March. 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 March.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Cottosloe for March. 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.