Conditions at Imsouane in September
September: The First Hint of Autumn
September is where the changing season starts to show up in the surf statistics. The average wave height bottoms out at 1.6m (5ft), but the period climbs back to a respectable 10.0s - a signal that the North Atlantic is beginning to wake up. The swell rose still looks summery with 74.9% from the NNW, but the NW component increases to 15.2% and there is a little more WNW energy at 2.4% in the mix. That extra west in the direction gives Imsouane more life than it had in July or August. The wind is superb: ideal conditions 70% of the time, with NNW at 36.1%, N at 13.4%, NNE at 13.3% and NW at 10.1% all contributing to a glassy offshore texture. Water temperature is a warm 18.2C, air temps average 22.6C, and rainfall is only 0.23mm/day. It is the classic shoulder-season window: not too big, but clean - and the first proper groundswell of autumn isn't far away.
Average Spot conditions at Imsouane in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Imsouane 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 Imsouane for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Imsouane 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 Imsouane.