- Home
- ...Australia
Australia- Gunnamatta
Conditions at Gunnamatta in August
August: Peak Size and the Search for Clean Windows
August is statistically the heaviest month of the year at Gunnamatta. Average swell height reaches 5.5ft (1.7m), and the wave period is a powerful 12.8s. The swell mix remains west-southwest-heavy, with WSW at 23.1%, W at 9.6%, and SW at 36.1%. There is more energy in the 5-6.5ft (1.5-2m) and 6.5-8ft (2-2.5m) classes than any other time of year. If the wind behaves, Gunnamatta can be as good as it gets-big, grinding, high-latitude Southern Ocean lines.
But August sees only 14% ideal offshore wind, tied for the lowest of the year. The persistent NNW flow (19.0%) and WNW/NW winds keep the beach churned up, and westerly groundswell often arrives under straight W/SW onshore winds. The best windows come from a blocking high in the Tasman Sea that angles NE/E offshore winds across the coast for a day or two, usually with 6-8ft (1.8-2.4m) swell. Water temp is at its coldest-12.3°C-air averages 11.4°C, and rainfall is the highest of the year at 2.47mm/day.
Average Spot conditions at Gunnamatta in August
Swell history for August
Wind history for August
Swell quality
Analyze the groundswell consistency at Gunnamatta 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 Gunnamatta for your next trip in August.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Gunnamatta 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 Gunnamatta.