Conditions at Campelo in September
September: The Autumn Switch Flicks On
September is where Campelo starts to wake from its summer nap. Average swell height climbs back to around 5-6ft (1.5-1.8m), period increases to 10.4s, and the ideal wind window jumps to 31%. NW remains the main swell source at 27.3%, closely followed by WNW (20.3%) and NNW (16.7%), and the height distribution now spreads more evenly into the 1.5-2m range as early-season Atlantic lows begin to form. Winds are split between a fading NE/ENE summer regime and increasing SSW/SW offshore patterns; when the SW flow kicks in after a low passes, Campelo can be surprisingly good. Air temperatures hold at 17.5°C, water temperature is still warm at 17.2°C, and precipitation increases to 1.99 mm/day. This is a month for opportunists, with quality often better than the size suggests.
Average Spot conditions at Campelo in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Campelo 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 Campelo for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Campelo 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 Campelo.