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Conditions at Mossel Bay in May
May: More Power, Fewer Clean Windows
May is a warning that winter has arrived. The average swell is up to 7.2ft (2.2m) and the period stretches to 12.1s, so Southern Ocean groundswell is becoming more powerful. SSW still leads at 28 percent, but SW is now a close second at 24 percent, confirming the west-southwest trend. Larger waves in the 5-8ft (1.5-2.5m) and occasional over-8ft (over-2.5m) category start to appear more regularly.
The trade-off is wind. Ideal flow drops to 30 percent, and the W/WSW/NW/NNW directions take command, bringing lumpy and cross/onshore conditions. Air temperature averages 15.6°C, water temperature is 17.1°C, and rainfall is still modest at 1.00mm/day. The swell is there, but you need to be picky.
Average Spot conditions at Mossel Bay in May
Swell history for May
Wind history for May
Swell quality
Analyze the groundswell consistency at Mossel Bay during May. 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 May.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Mossel Bay for May. 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.