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Conditions at La Isla in July
July: Heavy Swell, Zero Offshore Flow
July is the deepest part of the Peruvian winter. The average swell height remains at 1.9m (6.2ft), but the period eases slightly to 12.8s. The southwest-facing beach receives a powerful mix of SSW (70%) and S (18%) swell, with a sizeable portion of surf falling in the 1.5-2.5m (5-8ft) range. It is a heavy, grinding winter break when the energy arrives.
The bad news is that wind is ideal exactly 0% of the time. The S and SSW directions combine for about 78% of all observations, and SSW winds reach 10-20kph a significant share of the month. The result is persistent onshore and cross-onshore conditions that leave La Isla looking fat and bumpy more often than not. Any clean wave in July is a gift.
With air temperatures of 13-23.2°C and water at 15.9°C, this is a cold and demanding month - bring the hood and the patience.
Average Spot conditions at La Isla in July
Swell history for July
Wind history for July
Swell quality
Analyze the groundswell consistency at La Isla during July. 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 La Isla for your next trip in July.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at La Isla for July. 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 La Isla.