Conditions at Serangan in December
December: Peak Season Prime Time
December closes the year with Serangan firing on all cylinders. Swell height settles at 5-6ft (1.5-1.8m) with a 12.7s period, and the direction mix is clean: SSW 57.0 percent, SW 36.5 percent, and WSW 3.6 percent - nearly all incoming energy from the preferred window. Wind is back to wet-season form, with W at 33.7 percent, WNW at 10.7 percent, and ideal offshore conditions reaching 62 percent of the month. The trades have all but disappeared. That adds up to consistent, groomed, long-period surf in the 4-7ft (1.2-2.1m) range, plus warm 29.3°C water and a tropical air mass averaging 25.8°C. Precipitation is high at 8.14 mm/day, so plan around rain squalls - the waves will be worth it.
Average Spot conditions at Serangan in December
Swell history for December
Wind history for December
Swell quality
Analyze the groundswell consistency at Serangan 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 Serangan for your next trip in December.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Serangan 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 Serangan.