Conditions at Sultans in December
December: Northeast Monsoon Short-Period Swell
December marks the return of the northeast monsoon and a big shift in the swell spectrum. The waverose snaps back to ENE (41.4 per cent) and E (23.0 per cent) dominance, with most energy in the 1.6-5ft (0.5-1.5m) range. The average height is around 3.3ft (1.0m), but the period compresses to 6.9s, producing short-interval, bumpy trade-wind swell. Winds are once again dominated by ENE (27.5 per cent), NE (18.7 per cent) and E (8.9 per cent), while the ideal W-NW offshore quadrant drops to 30 per cent. The result is a lot of surface texture along the southeast-facing reef, with clean rides limited to the occasional northwesterly lull. Air temperature is 27.3°C, water is 28.6°C, and precipitation is 5.37mm/day. December is best for surfing small boards and hunting the rare clean east-swell window.
Average Spot conditions at Sultans in December
Swell history for December
Wind history for December
Swell quality
Analyze the groundswell consistency at Sultans during December. 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 Sultans for your next trip in December.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Sultans for December. 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 Sultans.