Conditions at Belongas Bay in September
September: Relentless Trades and Hidden Power
September's trade wind regime remains locked in, with ideal wind at just 1%. SE and SSE directions combine for 73.5% of the wind, and S adds another 10.6%, meaning almost every breath comes from the onshore side. The swell is anything but small: average height is a powerful 6ft (1.9m) at 14.2 seconds, with SSW responsible for 78.3% of the wave energy. Belongas is receiving world-class groundswell, but the surface is frequently chopped out by 10-30kph southeast winds. The rare clean sessions happen when the trades relax at dawn or when a northerly push spills across the region. Air temp is 26.0°C, water temp is 26.9°C, and precipitation stays low at 1.07mm/day.
Average Spot conditions at Belongas Bay in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Belongas Bay 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 Belongas Bay for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Belongas Bay 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 Belongas Bay.