Conditions at Shangri-la in September
September: Transition Rumbles
September is the first sign of the monsoon easing. Ideal wind improves to 39% as WSW (14.7%) and W (12.1%) become more common, with WNW adding 7.8%. Swell remains solid: average 1.6m (5.2ft), period 11.0s, and directions still locked in the S/SSE quadrant - SSE 46.3%, S 36.8%. Most waves sit in the 1-2m (3-6.5ft) range, with occasional 2-2.5m (6.5-8ft) pulses. The increasing westerly wind component makes late September a more realistic window for clean surf than July or August. Water temperature is 29.1°C, air 27.4°C, and rainfall is high at 5.95mm/day. Watch the synoptic pattern for a west/northwest wind event and you can be rewarded.
Average Spot conditions at Shangri-la in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Shangri-la 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 Shangri-la for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Shangri-la 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 Shangri-la.