Conditions at Mejillones in October
October: The North Atlantic Wakes Up
October is the true turning point. The North Atlantic low-pressure train begins to fire and Mejillones sees a sharp increase in average wave height to 1.7m (5-6ft) and average period to 11.4s. The swell direction is beautifully aligned-NNW at 56.7 percent, NW at 16.6 percent and N at 12.4 percent-so the spot's exposure is working hard. Even more importantly, the wind regime loosens: NNE drops to 33.9 percent, NE to 19.0 percent and NNW to 10.7 percent, while offshore directions start to appear more often; ideal surf wind rises to 13 percent. Water is still warm at 22.9°C, air temps average 22.3°C and precipitation increases to 0.51mm/day as the first frontal systems arrive. When the wind sets in from the S/SW after a low passes, October delivers long-period waves with warm water and autumn sun-some of the best combination waves of the year.
Average Spot conditions at Mejillones in October
Swell history for October
Wind history for October
Swell quality
Analyze the groundswell consistency at Mejillones during October. 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 October.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Mejillones for October. 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.