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Conditions at Watergate Bay in September
September: The Autumn Awakening
September is the first true sign of the surf season reviving. Average swell height climbs to 4ft (1.3m), the period stretches back to 9.6s, and the Atlantic is beginning to remember how to produce groundswell. W remains the primary swell direction at 40.2%, with WNW at 19.0% and WSW at 13.0%, so the bay continues to face right into the renewed energy. More of the swell is now in the 3-5ft (1-1.5m) range, and the first 5-8ft (1.5-2.5m) pulses of the autumn appear as lows deepen. Ideal wind frequency improves to 24%, and the autumnal progression of frontal systems often brings cleaner W-to-NW groundswell followed by clearing E/SE winds. Water temp is still pleasant at 16.4°C, air temp averages 15.3°C, and precipitation is 2.59mm/day. September can be one of the best combinations of warmth and surf quality all year.
Average Spot conditions at Watergate Bay in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Watergate Bay 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 Watergate Bay for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Watergate Bay 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 Watergate Bay.