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Conditions at Virac Harbour in December
December: Peak Winter Swell
December matches January for the largest average swell of the year at 1.1m (3.5ft), with an 8.2s period. The northeast monsoon is running at full strength, driving ENE swell at 55.7%, NE at 34.0%, and NNE at 5.4%. There is a healthy portion of 1-1.5m (3-5ft) and even some 1.5-2m (5-6.5ft) energy, so the harbour can look inviting. The problem remains direction: most of this is ENE/NE trade windswell, not the S/SW/SSW/WSW groundswell that would truly maximise the spot.
Wind is NE 34.1%, ENE 28.4%, NNE 15.0%, with N and NNW adding just 3.4% and 3.3% respectively--enough to produce occasional clean windows, not enough to make it the norm. Ideal wind is 25%. When a strong cold surge from the continent pushes the flow into the NW/NNW offshore quadrant, Virac can deliver some of the best waves of the year. Rain peaks at 18.57 mm/day and water is a comfortable 27.9C, so December rewards those who pick the right day.
Average Spot conditions at Virac Harbour in December
Swell history for December
Wind history for December
Swell quality
Analyze the groundswell consistency at Virac Harbour 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 Virac Harbour for your next trip in December.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Virac Harbour 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 Virac Harbour.