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Conditions at Jan Juc in August
August: Peak Power and Deep-Water Groundswell
August carries winter's momentum into the last full month of the season. Ideal wind remains impressive at 49%, and the average period stays among the longest of the year at 12.5s. Swell height also matches the annual peak at around 6ft (1.8m). The direction spread is SW-heavy at 37.0%, with WSW (18.0%), SSW (9.5%), W (7.6%) and NW/NNW lines all in the mix. This gives Jan Juc a lot of deep-water swell energy, much of it arriving as long-period groundswell.
The offshore wind pattern is still powerful. NNW (18.3%), WNW (18.1%) and NW (14.4%) dominate, providing clean, offshore conditions more often than not. Water temperature reaches its coldest reading of the year at 13.3°C, air temperature averages 11.2°C, and rainfall is at its highest at 2.76mm/day. The combination of cold fronts and high pressure ridges produces some of the biggest, most organised swells of the year - this is when 6-8ft (1.8-2.4m) days become realistic for experienced surfers.
Average Spot conditions at Jan Juc in August
Swell history for August
Wind history for August
Swell quality
Analyze the groundswell consistency at Jan Juc 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 Jan Juc for your next trip in August.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Jan Juc 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 Jan Juc.