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Conditions at Troncones in December
December: Holiday Season Magic - Offshore Breezes and Long Glassy Swell
December is the statistical pick for the most consistent surf conditions of the year at Troncones. Average height is a modest 1.2m (4ft), but the period is a lovely 13.4s and the wind is the friendliest of the entire calendar: ideal winds 54% of the time. Swell direction is still well inside the window - SSW 27.5%, SW 41.5%, WSW 22.4% - with the majority sitting in the 1-1.5m (3-5ft) range and a solid 22% in the punchy 0.5-1m (2-3.3ft) bracket. You won't get the biggest surf of the year, but you will get clean, long-period, perfectly-shaped waves.
High pressure over Mexico strengthens the N/NNE offshore flow (NNE 11.8%, NNW 13.2%, N 6.8%), keeping the surface glassy through the morning hours. Rain is almost nonexistent (0.18 mm/day), air temps average 25.2°C, and water temp is a pleasant 28.7°C. When a winter swell fills in from the SSW/SW, Troncones turns into a warm-water, low-stress beach break session. For consistent quality and high probability of clean waves, December is hard to beat.
Average Spot conditions at Troncones in December
Swell history for December
Wind history for December
Swell quality
Analyze the groundswell consistency at Troncones 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 Troncones for your next trip in December.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Troncones 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 Troncones.