Conditions at Kuta in September
September: Powerful Swells, Tricky Trades
September keeps Kuta in the big-swell bracket, averaging 6ft (1.9m) with a 14.2s period. The swell direction is remarkably focused: 78% from the SSW, with S adding 9% and SW 4%. That is about as optimal as swell direction gets for this SSW-facing beach, and there will be serious 5-8ft (1.5-2.5m) sets moving through the breaks.
However, the wind remains the limiting factor. SE winds lead at 48%, ESE at 29% and SSE at 16%, producing a strong cross-onshore flow that chops up the surface. Ideal wind is at its annual low of 17%, tied with October. The combination of heavy groundswell and side-shore trade wind often means heavy, bumpy conditions, best left to experienced surfers. Air temps rise slightly to 26.0°C, water temperature is 26.9°C and rainfall is still low at 1.07 mm/day, so at least the tropics are comfortable.
Average Spot conditions at Kuta in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Kuta 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 for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Kuta 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.