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Conditions at Star Tubes in December
December: The Big Winter Swell
December is the biggest month of the year. The average swell height reaches 7ft (2.2m) and the period peaks at 8.0s - the longest of the year. The northeast monsoon is at its strongest, with NNE (38.0%) and NE (27.4%) supplying a relentless train of muscular swell. The favorable W-NNW window is negligible, so Star Tubes remains heavily shadowed to the primary direction. However, the sheer size and longer period open up wrap-around energy and make the waves more powerful when they arrive. Winds are strong from the NE (40.0%) and ENE (31.3%), but ideal windows still clock in at 42%. With cooler, drier air (24.2°C, 2.51mm/day) and water dropping to 26.0°C, December offers the best chance of a big winter swell crossing the reef. Be ready for occasional XXL days when a genuine NNW groundswell lines up.
Average Spot conditions at Star Tubes in December
Swell history for December
Wind history for December
Swell quality
Analyze the groundswell consistency at Star Tubes 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 Star Tubes for your next trip in December.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Star Tubes 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 Star Tubes.