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Conditions at North Stradbroke Island in August
August: Consistency Over Size
August is winter's last true month, and it arrives with just a touch less juice. Average swell drops to 1.0m (3ft) and period eases to 8.8s, but the wind climate remains quality: ideal offshore flow is at 25%, with NNW winds becoming a major feature (12%) alongside W at 8%. Swell direction is still spread across SE (16%), ESE (16%), E (15%) and SSE (11%), so the beaches stay active. The shorter period means the waves are punchier and more wedge-like on the sandbanks, but the clean surface is the real winner. Rain is minimal at 1.56mm/day, air temps average 19.2°C, and water is at its coolest - 20.9°C. Dawn patrols with a fresh west/northwest offshore are the go-to play. Expect clean 2-4ft (0.6-1.2m) surf with the occasional bigger pulse.
Average Spot conditions at North Stradbroke Island in August
Swell history for August
Wind history for August
Swell quality
Analyze the groundswell consistency at North Stradbroke Island 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 North Stradbroke Island for your next trip in August.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at North Stradbroke Island 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 North Stradbroke Island.