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Conditions at Bells Beach in August
August: Maximum Power and Period
August continues the winter peak with the longest average period of the year at 13.0 seconds. Average swell height remains at 1.3m (4ft), but the weighting toward bigger waves increases. SW swell reaches its highest annual share at 49.1%, with WSW adding a strong 14.1% and SSW contributing 19.1%. The 1.5-2m and 2-2.5m categories are well represented, especially from SW, meaning more days with overhead-plus sets and real power in the water.
Ideal offshore wind remains strong at 52%. WNW blows 18.1% of the time, NNW 18.3% and NW 14.4%, producing lots of clean, groomed surfaces for the long-period groundswell. Water temperature drops to its coolest of the year at 13.2°C, air temperatures hover around 11.2°C, and rainfall is highest at 2.76 mm/day. August is arguably the most dependable month for quality at Bells: powerful 4-7ft (1.2-2.1m) swell, long intervals, and frequent offshore wind.
Average Spot conditions at Bells Beach in August
Swell history for August
Wind history for August
Swell quality
Analyze the groundswell consistency at Bells Beach 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 Bells Beach for your next trip in August.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Bells Beach 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 Bells Beach.