January is midsummer, and the Southern Ocean lows that drive the Eastern Cape have tracked too far south to reach it. Jeffreys Bay runs at two to four feet and the point breaks into disconnected sections instead of joining up, which is what people mean when they call J-Bay a winter wave.
Durban is having the opposite month. KwaZulu-Natal runs on Indian Ocean storm swell from December to February, and those swells turn its sand-bottom points into the best waves in the country for a few weeks a year. Cape Town, as always, has something somewhere. The water at J-Bay is at 21°C, the year's warmest, which is a shorty and no more.

