Conditions at La Graviere in September
September: The Autumn Re-awakening
September is the turning point. Average swell height climbs back to 3-4ft (1.1m) and average period lengthens to 10.6 seconds, as Atlantic lows begin to sharpen the storm track once again. The swell direction spreads a bit more, with NW at 53.8% and WNW at 33.3%, and there is a slight increase in 1.5-2m energy compared to summer - almost 11% of swells reach that range. It doesn't yet have the deep-winter dog, but the shift is tangible.
Wind conditions improve too. The ideal wind percentage rises to 29%, and offshore ENE through SE winds account for roughly 22%. Westerly and northwesterly wind percentages drop from their summer peak, though the thermal sea breeze can still cause afternoon bump. Precipitation picks up to 2.65 mm/day. Water temperatures hold warm at 20.8°C, air at 18.9°C, making September one of the most pleasant months to surf - warm water, early-season groundswell and a happy medium. This is a prime month for fun, recharging sandbars.
Average Spot conditions at La Graviere in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at La Graviere 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 La Graviere for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at La Graviere 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 La Graviere.