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Conditions at Margaret River in December
December: Summer Surf - Smaller but Still Refined
December marks the start of summer proper. The average swell height sits at 1.9m (6.2ft) and the period has dropped to 11.9s, though the directional distribution is still beautifully lined up for Margaret River: SW (40.6%), SSW (28.3%) and WSW (7.7%) deliver a reliable south-southwest groundswell. The summer wind machine is in full effect, with SSE (24.3%), S (18.0%) and SE (15.1%) producing strong afternoon seabreezes and an ideal wind percentage of just 14%. Early morning remains the play, when ESE/E offshore winds clear the surface and the swell is still organized. Water temp rebounds to 19.7°C, air temp averages 18.9°C, and precipitation stays very low at 0.48 mm/day. It may not be winter's heavy-water showcase, but December still serves up fun, rippable waves across the region.
Average Spot conditions at Margaret River in December
Swell history for December
Wind history for December
Swell quality
Analyze the groundswell consistency at Margaret River 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 Margaret River for your next trip in December.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Margaret River 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 Margaret River.