Conditions at Zavial in September
September: Autumn's Clean Arrival
September is a sleeper month at Zavial. Average swell stays in the 4-5ft (1.2-1.5m) range, but the period claws back to 10.4 seconds, and the first atmospheric reawakening of autumn begins. NW (47.1%) and NNW (25.5%) still dominate, but the S/SSW/SW component starts to reappear (0.6%), and the wind patterns get kinder: ideal wind windows jump to 43%, helped by cleaner NNW/NW flows and more frequent light mornings. Water temperature is at its warmest, 19.3°C, air temps remain summery (max 32.2°C), and rain is still low at 0.75mm/day. For small-to-fun waves with clean, rippable surfaces, September often offers the best quality-to-crowd ratio of the entire year at Zavial.
Average Spot conditions at Zavial in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Zavial 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 Zavial for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Zavial 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 Zavial.