Conditions at Tonel in August
August: Fading Summer, First Hints of Autumn
August closely mirrors July, but there are subtle signs that the turning point is near. Average swell height remains 1.4m (4-5ft), but the average period ticks up to 8.7s. Swell direction is still dominated by NW at 47.2% and NNW at 41.4%, with WNW at 6.9% and W at 0.8%. The lack of W and SW swell means Tonel is relying mostly on short to mid-period NW energy generated by the persistent northerly winds. Wind is still strongly summer-like, with ideal offshore E/NE flow just 9% of the time and NNW winds blowing 65.4%. The good news is that September is around the corner, and the first autumn low-pressure systems often arrive in the last week of August, lengthening the period and pulling the swell angle more westerly. For now, the average air temp of 21.8°C and water temp of 18.9°C make it comfortable to be in a light wetsuit, but the surf still demands patience.
Average Spot conditions at Tonel in August
Swell history for August
Wind history for August
Swell quality
Analyze the groundswell consistency at Tonel 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 Tonel for your next trip in August.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Tonel 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 Tonel.