- Home
- ...Australia
Australia- Black Rock
Conditions at Black Rock in July
July: Peak Southern Ocean Energy and Maximum Frustration
July is the heart of the Australian winter and the month where Black Rock's optimal swell window reaches its widest point. SSW, SW, WSW and W swells combine for about 17.4 percent of the total wave energy - the highest of any month - while average period remains a solid 9.3s and heights average 5-6ft (1.7m). S and SSE swells add another 29.6 percent, so the ocean is constantly active. However, the wind data is brutal: W winds blow 17.1 percent of the time, WNW 15.2 percent, and SSW 13.1 percent, leaving the ideal-wind score at only 16 percent. This is the classic Black Rock paradox: the swell is there, but the surface is often blown apart. Patience is key. When westerly gales ease and high pressure builds, the beach transforms into a powerful, heaving left-and-right reef that rewards the faithful. Water temperature drops to 17.1°C.
Average Spot conditions at Black Rock in July
Swell history for July
Wind history for July
Swell quality
Analyze the groundswell consistency at Black Rock during July. 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 Black Rock for your next trip in July.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Black Rock for July. 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 Black Rock.