Conditions at Uluwatu in December
December: Monsoon Return
December marks the return of the northwest monsoon. Swell remains in the 5ft (1.6m) range at a period of just 12.7s-still rideable, but shorter and less organized than the dry-season peaks. SSW (57.0%) and SW (36.5%) again provide the wave energy, with a good chunk in the 3-6ft (1-2m) range. The wind regime flips back to W (28.1%), WSW (19.0%) and WNW (9.3%), giving ideal surf wind only 39% of the time. Rain increases sharply to 7.59 mm/day, air temperatures are 27.9°C, and water temperature is back up to 29.3°C. December can still produce fun waves if you catch a morning clean-up, but the onshore trend wins out more often than not.
Average Spot conditions at Uluwatu in December
Swell history for December
Wind history for December
Swell quality
Analyze the groundswell consistency at Uluwatu 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 Uluwatu for your next trip in December.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Uluwatu 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 Uluwatu.