Conditions at Yerbabuena in July
July: Peak Summer Flat Season
July is generally the slowest month of the year at Yerbabuena. Average wave height bottoms out at 2.6ft (0.8m) and period shrinks to 6.8s, the lowest period on the annual calendar. WNW energy dominates the wave rose at a huge 59.5%, but it arrives as low-energy windswell and short-period lumps. E windswell accounts for another 18.2%, while direct S/SW swell reads zero. This is the heart of the low season: micro to waist-high, often messy and hard to ride on a normal board.
Wind isn't much better: ideal offshore conditions are only 20% of the time. The thermal easterly machine grinds away, with E at 24.7% and ESE at 12.6% creating bumpy afternoons. W at 16.1% and WNW at 9.9% can mix things up but rarely offer glass. Air temp is 22.5°C, water 20.4°C, and precipitation is essentially absent at 0.03mm/day. If the forecast ever shows a south swell in July, drop everything, but otherwise keep the longboard for fun days and the summer suit ready.
Average Spot conditions at Yerbabuena in July
Swell history for July
Wind history for July
Swell quality
Analyze the groundswell consistency at Yerbabuena 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 Yerbabuena for your next trip in July.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Yerbabuena 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 Yerbabuena.