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Conditions at North Narrabeen in September
September: Spring Swing Into Transition
September is a spring transition. Average swell height remains at 5ft (1.6m) and average period is decent at 9.0s, while the dominant swell directions shift between SSE (17.5%), S (16.4%) and SE (10.8%), with ENE and NE energy beginning to return. Offshore wind frequency is still strong at 37%, with NNW at 11.2%, W at 8.9%, NW at 7.7% and WNW at 7.2%. However, NE and NNE winds are starting to pop in the afternoons. Water temperature is 18.4°C, air temp rises to 15.6°C, and rainfall stays minimal at 1.65 mm/day. Score the morning windows, and you will still find plenty of winter-quality surf before the spring sea breeze takes over.
Average Spot conditions at North Narrabeen in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at North Narrabeen 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 North Narrabeen for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at North Narrabeen 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 North Narrabeen.