Conditions at Sanur in September
September: Last Gasp of the Trade-Wind Machine
September is the final month of the low season, and signs of change are subtle. The swell average drops slightly to 6.6ft (2.0m) with a still-long 14.0-second period, and SSW becomes absolutely dominant at 70.9% of the swell. The 5-8ft (1.5-2.5m) range remains fully represented. Winds, however, are still terrible for Sanur: SE 37.5%, ESE 36.6% and SSE 12.9% combine for nearly 87% onshore and cross-shore flow, and ideal wind is just 7%. Rain remains low at 1.14mm/day, sea temp nudges up to 26.7°C, and air temps rise to 24.4°C. The backend of the month often brings longer lulls in the trades, hinting at the return of cleaner surf in October.
Average Spot conditions at Sanur in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Sanur 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 Sanur for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Sanur 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 Sanur.