Conditions at Mejillones in August
August: Short-Period Summer Grind
August is a continuation of the summer grind, with only the faintest hints of change. Average swell height is 1.5m (5ft) and average period is 8.1s-still dominated by short-period N (41.4 percent), NNW (33.0 percent) and NNE (24.4 percent) swell. Wind remains locked in the NNE sector at 64.9 percent, with N at 17.4 percent and NNW at 9.3 percent, giving Mejillones a constant onshore bias. Ideal wind is 0 percent, which means the surface is almost always rippled or choppy. Water temperature peaks at 22.3°C, air temps average 22.6°C, and the whole system is stable and low-energy. For surfers, August is about chasing the rare glassy morning, the occasional seabreeze-free window, or simply saving energy for autumn. The swell magnet is still there, but without longer periods and offshore flow it is not the real Mejillones.
Average Spot conditions at Mejillones in August
Swell history for August
Wind history for August
Swell quality
Analyze the groundswell consistency at Mejillones 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 Mejillones for your next trip in August.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Mejillones 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 Mejillones.