Conditions at Kuta Reef in September
September: The Classic Month
September is arguably the cleanest month of the year. Ideal offshore wind hits 79%, and the SE (37.5%) and ESE (36.6%) flow is mostly light-to-moderate, with SSE adding another 12.9%. That keeps the west-north-west-facing lineup glassy for long periods of the day. The swell remains meaty: average 2.0m (6-7ft), period 14.3s, and the SSW direction dominates hard at 70.9%, with around 65% of the spectrum in the 1.5-2.5m (5-8ft) range. This is the kind of month where long-period SSW groundswell wraps into Kuta Reef and peels under bright, dry-season sunshine. Rainfall is a bare 1.14mm/day, air temp sits near 24.4°C, and water temp is 26.8°C.
Average Spot conditions at Kuta Reef in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Kuta Reef 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 Kuta Reef for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Kuta Reef 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 Kuta Reef.