Conditions at Sosua in September
September: The Atlantic Wakes Back Up
September is the turning point. Average height is still modest at 3.9ft (1.2m), but period jumps to 8.8s and the N/NNE/NNW source reappears with just over 8% of the wave rose. ENE (49%) and NE (20%) still headline, and the stronger fetch from developing tropical systems adds real punch to the east swell. This is also the month with the highest ideal wind percentage of the year at 58%; the ESE trades are lighter and the S/SW offshore window opens more frequently, producing some surprisingly clean, rippable days. Water temp peaks at 28.9°C, air temp averages 27.9°C, and precipitation increases to 2.6mm/day. Keep an eye on Cape Verde storms - they can turn this transitional month into one of the most exciting swell periods of the year.
Average Spot conditions at Sosua in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Sosua 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 Sosua for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Sosua 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 Sosua.