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Conditions at Itacoatiara in December
December: Warm, Small, and Mostly Clean
December kicks off the summer low season for size, but the weather is inviting. The average swell height drops to 3.5ft (1.1m) and the period to 9.7s, so the power is limited. Swell direction is still dominated by SSE at 27.4%, S at 24.9%, and SE at 21.0%, with SSW at 4.4%. Although S/SE lines are frequent, they mostly sit in the 2-5ft (0.5-1.5m) range. The good news is wind quality: ideal wind climbs back to 55%, with ENE at 21.2%, E at 17.4%, and NE at 8.4%, allowing clean, warm summer sessions on softer 2-4ft (0.6-1.2m) waves. Occasional summer cold fronts can still deliver a fun 3-5ft (0.9-1.5m) day. Rain is the highest at 7.05 mm/day, water temp is 21.5°C, and air is 24.7°C. Board selection: log or fish.
Average Spot conditions at Itacoatiara in December
Swell history for December
Wind history for December
Swell quality
Analyze the groundswell consistency at Itacoatiara 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 Itacoatiara for your next trip in December.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Itacoatiara 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 Itacoatiara.