Conditions at Nazare in September
September: The First Breath of Autumn
September is where the year starts turning. Average swell height moves back up to 5ft (1.5m) and period lengthens to 10.5 seconds, giving the waves a bit more power. The dominant directions remain NW (43.6 percent), WNW (22.7 percent) and NNW (20.6 percent), with 5.2 percent true W. As the Atlantic hurricane season and the first autumn lows begin to stir, occasional longer-period W/SW groundswell can sneak into the mix. Offshore wind improves markedly: ideal conditions occur 41 percent of the time, while the persistent NNW drops to 41.3 percent. This means more workable mornings and a return to proper surf quality. Water temperature is still warm at 18.5°C, air temps average 19.3°C, and the beaches are less crowded. September is a sneaky good month for those who want warm-weather waves with a little more push.
Average Spot conditions at Nazare in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Nazare 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 Nazare for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Nazare 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 Nazare.