Conditions at Baleal in September
September: The Autumn Rediscovery
September is when Baleal starts to wake up from summer slumber. Average wave heights lift to 1.7m (6ft), and more importantly the average period jumps back to 10.5s - enough to reintroduce genuine power into the water. Swell directions are still dominated by NNW (33.1%) and NW (33.5%), with WNW adding 15.5%. The bigger groundswells begin to push through in the 1.5-2.5m range, and the beach breaks start holding a more defined shape.
The improvement is not just from size but from wind. NNW winds, while still high at 40.4%, are less persistent than July and August, and ideal offshore wind readings climb back to 21%. Air temperatures remain warm at 19.3°C, water is at its warmest 18.7°C, and rainfall is modest at 1.08mm/day. September offers the first real opportunity to score solid waves on a summer board in warm water - one of the hidden gems of the Portuguese autumn.
Average Spot conditions at Baleal in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Baleal 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 Baleal for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Baleal 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 Baleal.