Conditions at Cap Sim in July
July: The Heart of Summer Lull
July is the slowest month of the year for consistent surf quality at Cap Sim. The average height is 5.2ft (1.6m) but the period slumps to 7.6 seconds, the lowest of the entire year. The direction is almost exclusively NNW at 85 percent, with a small N component near 12 percent; there is virtually no W/SW swell in the data. Ideal wind drops to a yearly low of 23 percent. The NNE trade wind blows at 57 percent, and much of that falls into the 20-40kph range, which is strong enough to make even moderate waves messy. Because the wind is from the northeast it remains technically offshore, but the intensity and the small, short-period, poorly aligned swell are the limiting factors.
Water temperature stays around 18.9°C despite warm air temps averaging 21.6°C and negligible rainfall. In July, look for dawn patrol windows when the trades relent, and bring a groveler board.
Average Spot conditions at Cap Sim in July
Swell history for July
Wind history for July
Swell quality
Analyze the groundswell consistency at Cap Sim 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 Cap Sim for your next trip in July.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Cap Sim 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 Cap Sim.