- Home
- ...Australia
Australia- Black Rock
Conditions at Black Rock in April
April: Longer Periods and the First Westerly Swell Pulses
April marks the true start of surf season building blocks. Average wave period rises to 9.3s, average swell height holds at 5-6ft (1.7m), and the SSW-W swell total finally reaches around 3.7 percent - a meaningful increase compared with summer. That said, the bulk of the energy is still coming from SSE (18.5 percent), SE (15.2 percent) and S (12.4 percent), so many days remain direction-challenged for this southwest-facing stretch. Winds become more variable: NNE is still strong at 10.2 percent, but WSW, W, WNW and NNW are all more present, dropping the ideal-wind score to 29 percent. Water temperatures cool to 21.7°C as autumn takes hold. This is a month where you need to pick the windows, but the growing westerly component hints at better things to come.
Average Spot conditions at Black Rock in April
Swell history for April
Wind history for April
Swell quality
Analyze the groundswell consistency at Black Rock during April. 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 April.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Black Rock for April. 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.