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Conditions at Wilderness in September
September: A Fresh Pulse in the Tropics
September is the turnaround month. Average wave height climbs slightly to 3-4ft (1.1m), and period jumps to 9.1s, signaling the return of more organized swell. The wave rose is still NE/ENE-heavy at 34% and 34%, but there is a noticeable increase in N (2.5%) and NNW (2.0%) energy, plus a solid NNE component at 12.7%. For Wilderness, these north pulses are the first taste of the upcoming season and can offer punchy chest- to head-high waves at the right sandbars.
Wind conditions are excellent: 67% ideal, with E (27%) and ENE (32%) providing clean offshore flow. Onshore W/NW wind is rare. Water temp is 29.3°C, air temp 27.8°C, and rainfall peaks at 5.74 mm/day due to tropical moisture. September is a low-ceiling month but one of the most reliable for clean, rideable surf.
Average Spot conditions at Wilderness in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Wilderness during September. 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 Wilderness for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Wilderness for September. 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 Wilderness.