Conditions at Rincao in December
December: Summer Return with Smaller, Shorter-Period Waves
December brings the summer pattern back to Rincao. Average wave heights dip to 4-5ft (1.4m), the period shortens to 8.5 seconds, and the energy is dominated by E (25 percent) and ESE (22 percent) trade-swell. It is the classic summer setup: constant waves, but softer, more sectiony faces with less grinding power than the winter months.
Ideal offshore wind drops to 24 percent, while NE/ENE winds combine for nearly 37 percent of all observations, and E/ESE/SE/SSE onshore winds remain common. Air temperatures rise to 22.9°C and water temps to 21.9°C, so the beach is crowded and the surface is often bumpy in the heat of the day. That said, dawn patrols with a morning W/NW breeze can still score fun 3-5ft (1-1.5m) waves before the summer seabreeze kicks in.
Average Spot conditions at Rincao in December
Swell history for December
Wind history for December
Swell quality
Analyze the groundswell consistency at Rincao 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 Rincao for your next trip in December.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Rincao 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 Rincao.