Conditions at Zonte in September
September: Tropical Energy and Sneaky Swell
September is a dynamic month. Average swell height stays at a robust 4.5ft (1.4m), though period eases to 13.0 seconds. The swell direction spreads out more than mid-summer: SSW is still the king at 73.1%, but SW jumps to 16.2% and S adds 8.7%, with a small WSW component. That broader south-southwest window actually helps Zonte, as more angles wrap into the cove. The 5-8ft (1.5-2.5m) bracket remains around 31%, so there is no shortage of heavy days.
Winds are the most variable of the year, with ideal offshore flow at just 52%. E winds (11.6%) and ESE (7.5%) compete with WNW (8.3%), W (7.9%), and NNW (7.6%). This is also the wettest month with 8.14 mm/day of rain, while air temp averages 26.4°C and water temp 29.9°C. The waves can be a bit more challenging to catch clean, but when a tropical cyclone or a strong southern Pacific storm lines up, September can deliver epic, pumping Zonte.
Average Spot conditions at Zonte in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Zonte 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 Zonte for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Zonte 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 Zonte.