Conditions at Banzai in September
September: Early Autumn Stirs
September is the first month that shows real hope for surfers. Average wave height climbs back to around 2ft (0.6m), period to 4.3s, and ideal wind to 12%. WSW (15.0%), S (14.4%), SW (11.9%), and SSE (10.6%) dominate the swell spectrum, with a noticeable increase in 3-5ft (1-1.5m) energy compared with July and August. The wind field is split between the last summer sea breezes and the first autumn northeasterly pulses: NE (8.4%), NNE (8.5%), SSE (8.2%), and SE (7.6%) all share the stage. The return of synoptic lows to the western Mediterranean raises precipitation to 2.67mm/day and helps generate more organized swell. Water temp is still warm at 23.2°C, air temp 21.9°C, so a boardshorts-to-springsuit range is all you need. The early mornings are your best bet.
Average Spot conditions at Banzai in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Banzai 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 Banzai for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Banzai 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 Banzai.