Conditions at Puerto Sandino in December
December: Trade-Wind Perfection on Smaller Swell
December rounds out the year with the most reliable trade-wind setup. Average height is 3.3ft (1.0m) with a 12.5-second period, so it is smaller than the summer peaks but far from flat. The wave mix remains favorable: SSW 42.1%, S 25.2%, SW 4.7%, with more SSE and SE energy filling in the gaps. The big story is wind: ENE blows 63.1% of the time, mostly at 10-30kph, pushing ideal wind to 71%. Rain is nearly absent at 0.26mm/day, water temp is 27.4°C, and air temps average 27.6°C. With smooth offshore conditions and consistent 2-4ft (0.6-1.2m) SSW swell, December is one of the cleanest months of the year.
Average Spot conditions at Puerto Sandino in December
Swell history for December
Wind history for December
Swell quality
Analyze the groundswell consistency at Puerto Sandino 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 Puerto Sandino for your next trip in December.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Puerto Sandino 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 Puerto Sandino.