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Conditions at Grumari in July
July: Midwinter Swell Holding Strong
July keeps the winter consistency alive. Average height is still 4ft (1.2m), period is 10.8s, and ideal wind remains high at 53%. The swell window is led by S (35.5%) and SSE (23.0%), with SE (17.4%), SSW (12.5%) and ESE (9.7%) also contributing. The meat of the surf is in the 3-5ft (1-1.5m) range, but there are still solid 5-6.5ft (1.5-2m) peaks from S and SSW, plus 6.5-8ft (2-2.5m) offerings from those same directions. The northerly and northwesterly offshore directions are present alongside typical NE trades and SW flow, giving a 53% window of clean conditions. Rain is minimal at 1.59 mm/day, air temperatures bottom out at 20.3°C, and water temperature sits at 21.7°C. Bring a spring suit for the cooler mornings.
Average Spot conditions at Grumari in July
Swell history for July
Wind history for July
Swell quality
Analyze the groundswell consistency at Grumari 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 Grumari for your next trip in July.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Grumari 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 Grumari.