Conditions at Bogliasco in September
September: The Autumnal Switch - First Real Swell of the Season
September signals the beginning of the end of summer flatness. Average swell height edges up to 1.5-2ft (0.5m), the period improves to 4.6s, and ideal wind frequency jumps to 20%. SW (28.5%) and SSW (14.3%) still dominate, but the distribution shifts toward slightly larger sizes, with about 12% of all swells now exceeding 3ft (1m) and around 4% reaching 5ft (1.5m) or more. It's not yet winter, but the Atlantic storm track is starting to probe into the Mediterranean.
The wind profile is more promising than in summer: N (10.6%), NNE (14.2%) and NNW (12.9%) total nearly 38%, while SSE (12.6%), S (10.2%) and SE (8.9%) remain stubbornly present. Water temperature is still warm at 22.7°C and air averages 18.0°C. As autumn progresses, the sea breeze weakens, opening the door for cleaner late-season surf. Perfect for a summer wetsuit and the first solid SW pulses.
Average Spot conditions at Bogliasco in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Bogliasco 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 Bogliasco for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Bogliasco 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 Bogliasco.