Conditions at Esposende in September
September: Autumn Tease
September is when Esposende starts to wake up from the summer slumber. The average swell height creeps back to 1.6m (5.2ft) and the average period jumps to 10.4s, signifying the first real groundswells of autumn beginning to filter through. The swell rose remains dominated by NW (34.1%), WNW (22.8%) and NNW (22.4%), but the period push makes those waves noticeably more powerful and organised than July and August.
Wind quality improves too. The ideal wind percentage climbs to 34%, and while the nortada still blows 27.3% from the NNW and 10.5% from the NW, the mornings are increasingly glassy. The combination of warm water (16.6°C), mild air (19.2°C) and freshly arriving swell makes September one of the most pleasant months for surfers, even if the sizes are not yet winter-like. A 3/2 wetsuit is ideal, and any tropical-origin early-season storm can suddenly turn Esposende into a firing, hollow beachbreak.
Average Spot conditions at Esposende in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Esposende 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 Esposende for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Esposende 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 Esposende.