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Conditions at Red Tree Reef in September
September: The Autumn Awakening
September is when Red Tree Reef feels the North Pacific flex its muscles again. Average height jumps to 6-7ft (1.8-2.1m), though the period is still a slightly inconsistent 9.9s. Swell from WSW (27.8%) and SW (25.8%) dominates, with SSW at 11.2% and solid chunks of 5-8ft (1.5-2.5m) energy appearing in the distribution. This is an improvement over summer, although the shorter period means the waves can be a bit lumpier and more wind-sensitive than the long-period winter groundswells.
Wind quality is still a summer holdover, with ideal conditions only 24% of the time. SSE (13.5%) and SE (11.8%) are frequent, which are offshore or angular for this exposure, but they can also be accompanied by early-fall moisture and stronger gusts. Water temp holds at 13.0°C (55°F), and rainfall jumps to 9.13 mm/day as frontal systems become more active. For the dedicated surfer, September is the start of a new chapter-and the first real swell of autumn is always worth the wait.
Average Spot conditions at Red Tree Reef in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Red Tree Reef 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 Red Tree Reef for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Red Tree Reef 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 Red Tree Reef.