Conditions at Devil's Rock in July
July: Small and Mostly Cross-Shore
July is the height of summer stability. The swell average is 5-6ft (1.6m) with the shortest average period of the year at 7.8s, and an astonishing 93.8% of the swell is NNW. This means the spot is essentially seeing windswell from one direction - plenty of movement, but rarely any real power. Ideal wind improves slightly to 33%, partly because the northern/eastern breezes become lighter, yet NNW (40.4%) and NW (23.4%) still dominate the wind rose. Water temperature is 17.8°C, air temp reaches 29.2°C, and rainfall is essentially zero. If you're willing to log some groveling waves in warm air, the very early hours can occasionally be glassy.
Average Spot conditions at Devil's Rock in July
Swell history for July
Wind history for July
Swell quality
Analyze the groundswell consistency at Devil's Rock 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 Devil's Rock for your next trip in July.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Devil's Rock 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 Devil's Rock.