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Conditions at Snapper Rocks in December
December: Pre-Summer Onshore Grind
December is much like November, with a persistent NNW/NNE wind regime. NNW (19.2%), NNE (9.7%) and N (6.9%) make up the lion's share of the wind rose, keeping ideal wind at 37%. Average swell height is 3-4ft (0.9-1.2m), period sits at 7.5s, and the vast majority of waves come from E (28.4%), ENE (20.0%), ESE (18.7%) and NE (11.8%).
This is not a month for groomed point perfection. The consistent easterly trade-wind swell under a northerly sea-breeze tends to become lumpy and sectiony. The wildcard is tropical cyclone season in the Coral Sea: a well-placed tropical low can send in N/NE swell with S/SW offshore winds and deliver one of the best waves of the year. Water temps climb to 24.0°C, air is 18.3-29.9°C, and rainfall increases to 4.42mm/day.
Average Spot conditions at Snapper Rocks in December
Swell history for December
Wind history for December
Swell quality
Analyze the groundswell consistency at Snapper Rocks 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 Snapper Rocks for your next trip in December.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Snapper Rocks 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 Snapper Rocks.