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Conditions at Rosie's Bay in August
August: The Calm Before the Autumn
August keeps Rosie's Bay in summer slumber, but there are faint signs of the approaching autumn. Average swell height remains at 1.2m (3.9ft) with a steady 11.3s period. The swell direction is even more west-dominated: W accounts for 41.8%, WSW for 29.9%, and SW for 14.1% - a very consistent, if undersized, directional window. Winds are still predominantly onshore, with WNW at 22.8%, NW at 14.8% and W at 15.1%. However, ideal offshore conditions nudge up to 23%, suggesting a few more clean windows, especially in the early mornings. The ocean teases with a slightly better average period and occasional pulses of background W/NW energy. Water temperature reaches its annual peak of 13.6°C, air averages 14.9°C, and rainfall is minimal at 2.0mm/day. While August rarely delivers epic surf, it is a month of quiet anticipation for what awaits in September.
Average Spot conditions at Rosie's Bay in August
Swell history for August
Wind history for August
Swell quality
Analyze the groundswell consistency at Rosie's Bay during August. 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 Rosie's Bay for your next trip in August.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Rosie's Bay for August. 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 Rosie's Bay.