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Conditions at Grumari in November
November: Rainy Season and a Drop in Power
November marks the slide into the low season. Average wave height stays at 3.5ft (1.1m), period falls to 9.9s, and ideal wind drops to 33%. Swell direction is still friendly, with S 29.3%, SSE 28.4%, SE 24.5% and ESE 13.7%, but the energy mix leans toward shorter-period trade windswell rather than the long, powerful groundswell of winter. The most common heights are in the 2-3ft (0.5-1m) and 3-5ft (1-1.5m) ranges, with only modest percentages of 5-6.5ft (1.5-2m) surf. Wind patterns are dominated by E (13.2%), ENE (12.5%), ESE (10.0%) and NE (8.5%), making clean, glassy days the exception rather than the rule. The rainy season fires back up with 6.76 mm/day, air temperature averages 23.4°C, and water temperature remains steady at 20.2°C.
Average Spot conditions at Grumari in November
Swell history for November
Wind history for November
Swell quality
Analyze the groundswell consistency at Grumari during November. 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 November.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Grumari for November. 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.