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Conditions at Sealion Cove in September
September: The Fall Pulse Starts to Build
September is the transition month. Average swell climbs back to 2.0m (6.6ft), but period remains modest at 9.9s. The swell rose shows a shift toward stronger SW (25.8%) and WSW (27.8%) energy, with a noticeable increase in the >1.5m classes. W and WNW still only combine for about 7%, so it's not yet the classic west-swell window, but the bigger swells are starting to show up on the buoy.
Offshore flow becomes more common at 37%, though SE/SSE winds dominate the offshore family and can add a little side texture. Water is still warm-ish at 13.0°C, air averages 10.0°C, and precipitation jumps to 8.87mm/day as fall storm systems begin to roll through. September is a sneak preview: not yet consistent, but with the first real swell pulses of the season.
Average Spot conditions at Sealion Cove in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Sealion Cove 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 Sealion Cove for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Sealion Cove 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 Sealion Cove.