Conditions at T-Street in September
September: Transition Begins, Hints of Fall
September marks the first meaningful turn toward fall. The swell mix is still summer-like - SW at 43.7%, WSW at 26.6%, SSW at 24.3% - but the ocean starts to respond as the North Pacific shows signs of life. Average wave height remains 2.6ft (0.8m), and the 13.6s period provides excellent long-period groundswell quality. Ideal wind jumps to 18%, a noticeable improvement from the summer doldrums, as occasional NE and E offshore pulses sneak between the westerly sea-breeze days. The wind rose is still dominated by WSW at 19.8% and W at 19.1%, but the balance is shifting. Water stays warm at 18.2°C, air averages 22.4°C, and precipitation is minimal at 0.17mm/day. Late September is often when T-Street starts to turn back on.
Average Spot conditions at T-Street in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at T-Street 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 T-Street for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at T-Street 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 T-Street.