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Conditions at Mossel Bay in January
January: Long-Period Summer Gold
January delivers the cleanest and most reliable surf of the year at Mossel Bay. The average swell height sits at 6.6ft (2.0m) with a 10.6s period, placing every pulse firmly in the powerful long-period class. SSW swell leads the pack at 31 percent, and S and SW swells add another 30 percent, so the Southern Ocean is consistently feeding the bay. The 5-8ft (1.5-2.5m) range carries most of the energy, giving the typical January session real push and head-high-plus shape.
Wind quality is the reason January shines. Ideal offshore flow is present 47 percent of the time, with S, SSW and SW breezes grooming the surface. The frequent E and ESE winds are warm sideshore summer flow, more of a textural annoyance than a full onshore killer. With air temperatures averaging 22°C and water temperature at 21.6°C, this is peak summer surf: warm, clean and consistent.
Average Spot conditions at Mossel Bay in January
Swell history for January
Wind history for January
Swell quality
Analyze the groundswell consistency at Mossel Bay during January. 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 Mossel Bay for your next trip in January.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Mossel Bay for January. 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 Mossel Bay.