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Conditions at Middleton in December
December: Summer Groundswell, Soupy Textures
December wraps the year with the classic Australian summer surf package: plenty of swell, warm water, and a never-ending sea breeze. The average remains 1.4m (4.6ft) at 11.1s, with SSW (55.1%), SW (26.7%) and S (13.5%) delivering consistent Southern Ocean energy. The wave heights are surprisingly generous - 26.6% of the SSW swell sits in the 1-1.5m (3.3-4.9ft) range and 14.7% in the 1.5-2m (4.9-6.6ft) class - so you won't be starved for waves.
But the wind rose takes away with one hand what the swell gives with the other. Onshore SSE (17.6%), S (16.2%) and SSW (11.8%) winds tear up the surface, and ideal offshore flow is down to just 19% of the time. The patterns are clear: inland heat, sea breezes, and a lot of layered-up, lumpy mid-summer slop. The water sits at 18.4°C, air is 18.7°C and rain is scarce at 0.74 mm/day. Catch the dawn patrol or wait for the next Southern Ocean front to clean things out - both are part of the summer dance at Middleton.
Average Spot conditions at Middleton in December
Swell history for December
Wind history for December
Swell quality
Analyze the groundswell consistency at Middleton 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 Middleton for your next trip in December.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Middleton 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 Middleton.