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Conditions at Motunau Beach Island in December
December: Summer Mode and Small Easterly Swell
December rounds out the year in full summer mode. The average swell height is 1.1m (3-4ft), the period drops to the year's lowest at 9.2s, and ideal wind frequency is only 34 percent. ENE and E together account for over 38 percent of the swell, while the S component shrinks to just over 10 percent including SSW. Expect mostly fun-sized, grovelly waves with punchy but average periods. The most consistent window is the morning, when NW and NNW offshore winds clean up the E/ENE windswell. With water temperature at 15.0°C and air temps near 14.9°C, it is the most comfortable time of year to be out, but surfers will need to hunt for stray S groundswell to get the really good waves.
Average Spot conditions at Motunau Beach Island in December
Swell history for December
Wind history for December
Swell quality
Analyze the groundswell consistency at Motunau Beach Island 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 Motunau Beach Island for your next trip in December.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Motunau Beach Island 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 Motunau Beach Island.