Conditions at Playa de San Juan in July
July: The North-East Monsoon
July looks okay on paper and feels disappointing in the water. The average swell height is an inflated 1.4m (4.5ft) because the NNE direction accounts for 61.2% of all swell, with much of it in the 1-2m (3-6ft) range. However, the average period sinks to 7.3s, which classifies most of this as short-period, wind-driven slop. The beach is constantly exposed to an onshore NNE fetch.
This is the worst wind month of the year: ideal offshore flow registers 0%, while NNE winds run at 62.4% and N at 24.5%, mostly between 20-40kph. The summer pressure gradient locks Playa de San Juan into a strong north-easterly pattern. Air temperatures average 21.7°C and the sea reaches a warm 20.7°C, but surfing becomes a battle with chop and wind texture.
Average Spot conditions at Playa de San Juan in July
Swell history for July
Wind history for July
Swell quality
Analyze the groundswell consistency at Playa de San Juan 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 Playa de San Juan for your next trip in July.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Playa de San Juan 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 Playa de San Juan.