Conditions at Muizenberg in December
December: High Summer, High Onshore Wind
December rounds out the year with the same summer dilemma: consistent groundswell but a relentless south-easterly wind. Average swell height is around 7.5ft (2.3m), period is 11.3s, and the SW (27.0%), SSW (15.6%), S (9.9%), WSW (7.4%) and SSE (5.7%) mix keeps some power in the water. However, SSE (30.8%), SE (16.1%), S (16.0%) and SSW (6.9%) make up nearly 70% of the wind. Offshore N/NNE/NW/NNW directions total only about 10%, and the ideal rating sinks to 13%. Water temp is up to 17.6°C, air temp averages 19.9°C, and rainfall is minimal at 0.76 mm/day. Add in holiday crowds and the Cape Doctor, and December is generally a month for optimistic dawn patrols rather than day-long surf sessions. Look for a rare light north-westerly morning and grab it.
Average Spot conditions at Muizenberg in December
Swell history for December
Wind history for December
Swell quality
Analyze the groundswell consistency at Muizenberg 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 Muizenberg for your next trip in December.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Muizenberg 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 Muizenberg.