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Conditions at Victoria Bay in December
December: High Summer, Onshore Trades and Southern Fetches
December brings the summer pattern back in full. The ideal wind percentage slips to 23%, with ESE winds roaring at 19%, SE at 12%, and E at 9%; onshore trades dominate most afternoons and often persist deep into the night. The swell is still there - an average 7ft (2.2m) at 10.7s - but the surface quality is heavily dependent on catching the early-morning offshore transition.
The swell direction mix remains favourable underneath: SSW 24%, SW 21%, S 12%, SSE 8%, SE 6%, and ESE 5%, giving the preferred ESE-S window a 31% share. This makes December one of the more likely months for direct southeast groundswell, yet those waves almost always arrive with the onshore wind. When a cold front or cut-off low nudges the high pressure system and turns the wind northwest, the bay can still deliver rippable, fun-sized waves in the 5-8ft (1.5-2.4m) range. Air temps hit 20.0°C, the water warms to 19.4°C, and the holiday crowds add the final challenge.
Average Spot conditions at Victoria Bay in December
Swell history for December
Wind history for December
Swell quality
Analyze the groundswell consistency at Victoria Bay 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 Victoria Bay for your next trip in December.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Victoria Bay 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 Victoria Bay.