Conditions at Madalena do Mar in September
September: The Autumn Spark
September is the bridge between summer lulls and winter power. The average swell creeps back up to 5.2ft (1.6m) and the period extends to 10.5s, giving the waves just enough punch to recapture your attention. The swell rose is strongly NNW-dominated (40.4%), with NW (16.7%), NNE (16.7%) and N (13.8%) adding depth. More importantly, the first true low-pressure systems of the autumn season begin to form in the North Atlantic, and longer-period swells start to slip through the barriers. Wind is still on the summer schedule: ideal offshore flow is 60%, the best of the year, led by NNE (28.7%), NE (20.3%) and NNW (11.8%). Water temp hits a yearly high of 23.8°C, making September one of the most pleasant months to be in the water in a spring-suit or even boardshorts. When the first NW groundswell lines up with trade wind conditions, Madalena do Mar looks world-class.
Average Spot conditions at Madalena do Mar in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Madalena do Mar 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 Madalena do Mar for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Madalena do Mar 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 Madalena do Mar.