Conditions at Cotton Trees in December
December: Small, Clean, Full of Potential
December closes the year with smaller but frequently clean surf. Average wave height drops to 3ft (0.9m), period 10.6s, and S swell once again rules at 84.3%, mostly in the 2-3ft (0.5-1m) range; 14.4% of readings still reach 3-5ft (1-1.5m). SSW provides 14.8%, enough for an occasional punchy set. Ideal wind sits at 26%, and while SW (18.4%) and WSW (15.0%) still appear, the stronger monsoon fury has faded. With water temperature 28.7°C, air temperature around 27.0°C and only 0.86mm/day of rain, December offers decent odds of warm, clean longboard waves - a nice way to finish the season.
Average Spot conditions at Cotton Trees in December
Swell history for December
Wind history for December
Swell quality
Analyze the groundswell consistency at Cotton Trees 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 Cotton Trees for your next trip in December.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Cotton Trees 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 Cotton Trees.