Conditions at Mejillones in April
April: Transitional Swell, Deteriorating Consistency
April is the first month where the quality meter starts to slide. Average swell height comes down to 1.9m (6ft) and the average period drops to 10.9s, so there is less open-ocean push behind the waves. The direction is still excellent-NNW dominates at 47.3 percent, NW adds 16.7 percent and N chips in 12.2 percent-but the period loss means the waves don't have the same heavy, liquid energy as winter. Wind is the real problem: NNE blows a whopping 36.8 percent of the time and NNW contributes 18.4 percent. Ideal wind drops to only 5 percent, making most sessions bumpy or cross-onshore. Water temperature remains cool at 18.7°C, air temps average 18.4°C and rain is low (0.24mm/day). April needs a patience strategy: wait for the tail end of a low to swing winds offshore, then go.
Average Spot conditions at Mejillones in April
Swell history for April
Wind history for April
Swell quality
Analyze the groundswell consistency at Mejillones during April. 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 April.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Mejillones for April. 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.