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Conditions at Cottosloe in June
June: Winter Power - Peak Swell Direction and Solid Size
June brings the core of the winter season, with average swell height up to 2.5m (8.2ft) and period at 12.8s. The swell direction continues its westward shift: WSW accounts for 16.0%, W now 4.5%, WNW 2.3%, and NW 1.4% - combined optimal directional swell is at its annual peak. SW drops to 27.2% as the storm track moves closer and the angle improves. Wind percentages remain favourable with 43% ideal, though the pattern becomes more mixed than May. E (9.8%), ENE (10.3%), NE (9.0%) still offer offshore options, but NW and W winds (5.5-6.5%) can also bring choppy conditions at times. Water temp falls to 19.6°C, air to 16.8°C, and precipitation jumps to 4.44 mm/day - frequent winter fronts pass through. Expect pumping, powerful surf that is well worth a west-facing wetsuit.
Average Spot conditions at Cottosloe in June
Swell history for June
Wind history for June
Swell quality
Analyze the groundswell consistency at Cottosloe during June. 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 June.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Cottosloe for June. 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.