Conditions at Thunders in August
August: S Swell Steps Up and Trade-Wind Energy Remains
August serves up the same average size as July - 1.7m (5.6ft) - with a long-period consistency of 14.3s. The character changes slightly: S direction increases to 45.7% and SSW still contributes 47.9%, making this the month with the most pure south swell in the mix. While SSW usually works best at Thunders, the S energy is still inside the exposed window and can wrap in nicely at certain tides. Wave heights remain heavy-hitting: 59.3% at 1.5-2m (5-6.5ft) and 17.5% at 2-2.5m (6.5-8ft).
The trade winds are in full force, with SE alone at 39.9% and ESE/SSE combining for another 28.8%. This keeps the atmosphere dry and the cloud cover low, but it can also get strong - 18% of SE observations are in the 20-30kph bracket, and 2.4% blow 30-40kph. When the wind cranks, surface conditions become more challenging. The ideal surfing wind percentage drops to 48% from July's 55%, a sign that intensity matters. Still, with rainfall at 6.30mm/day and water temp at 28.9°C, August remains a prime month for quality Indo surf if you chase the dawn window.
Average Spot conditions at Thunders in August
Swell history for August
Wind history for August
Swell quality
Analyze the groundswell consistency at Thunders 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 Thunders for your next trip in August.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Thunders 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 Thunders.