Conditions at Nalvo in September
September: Season Shift on the Horizon
September is the turning point of the Philippine surf year. The southwest monsoon is loosening while the northeast monsoon begins to poke through, and ideal wind days climb to 28 percent. Swell is still primarily WSW (22.3%) and SW (22.4%), but W (9.3%), WNW (6.3%) and NW (5.9%) contribute a solid western component, and NNW/NNE energy is sneaking back in. Average height sits around 3ft (0.9m), period is 7.1s. Rain is still heavy at 12.97mm/day, water temp is 29.7°C and air temp averages 25.4°C. Look for tropical cyclones to the east and northeast: they can throw long-period W/NW swell at Nalvo just as the wind flips to offshore, creating the first clean, lined-up surf in months.
Average Spot conditions at Nalvo in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Nalvo 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 Nalvo for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Nalvo 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 Nalvo.