Conditions at Leblon in December
December: Summer Starts, Small Swell and Crowded Days
December closes the year on a small-wave note. Average swell height drops to 1.1m (3.5ft) with a 9.7s period, and the wind is ideal 46% of the time. The swell direction is still dominated by SSE (27.4%), S (24.9%) and SE (21.0%), but with very little push: less than 16% of swells reach 1.5m (5ft), and the majority are in the 0.5-1m and 1-1.5m classes. ENE (15.7%) and E (16.7%) winds are the chief wind directions, with enough N/NNW light wind to groom the surface in the morning. Air temps average 24.7°C, water 21.9°C, and rainfall is the highest of the year at 7.05 mm/day. Expect fun-sized, groveling surf with a summer crowd - save the bigger-wave expectations for the coming autumn.
Average Spot conditions at Leblon in December
Swell history for December
Wind history for December
Swell quality
Analyze the groundswell consistency at Leblon 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 Leblon for your next trip in December.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Leblon 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 Leblon.