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Conditions at Punta Arena in December
December: Winter Swells Roll In, Short-Period Punch
December closes the year with the classic northern winter pattern. The average period drops to 10.2s, the lowest of the autumn-winter run, but that can make the waves feel punchier and more localized. Average heights remain around 0.7m (2-3ft). NNW swell is back in full force at 37.7%, with SSE at 17.6% and S at 16.0%, while the preferred NE, ENE, E and ESE directions total nearly 2.5% - small, but still the best exposure window since November.
Ideal wind frequency holds at 48%, and the synoptic pattern is dominated by NNW and NW winds, often cross-offshore to offshore enough to keep the surface reasonably clean. Air temperatures cool to 21.6°C, water drops to 24.2°C, and precipitation is low at 0.32 mm/day. The holiday period offers consistent small surf with occasional chest-high sets when a NNW groundswell wraps in and the offshore wind finally locks onshore.
Average Spot conditions at Punta Arena in December
Swell history for December
Wind history for December
Swell quality
Analyze the groundswell consistency at Punta Arena 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 Punta Arena for your next trip in December.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Punta Arena 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 Punta Arena.