Jeffreys Bay (Supertubes) Swell Window
Eastern Cape, South Africa · part of the Jeffreys Bay (Supertubes) spot guide
- Swell window (from)
- 200°–245° (SSW–WSW)
- Best direction
- ~225° (SW)
- Period sweet spot
- 13–17 s
- Open-ocean height (Hs)
- 5–10 ft
- Resulting faces
- 4–10 ft
Open-ocean vs. the face: the heights on buoys and forecast models are significant wave height (Hs) in deep water. What you ride is the breaking face, which depends on period, direction and this break's bathymetry — that's why the two rows above differ. PierMonkey's spot ratings already do this conversion for you.
Because the wave is entirely a wrap, the productive window is the southwest quadrant — roughly 200° to 245°, centred on SW near 225° — even though the point itself faces southeast. Longer-period swells refract more and effectively arrive from a more southerly angle, focusing energy and linking the sections; shorter-period swells stay raw SW and section the wave up. Around 13 seconds and up is where it starts to line up.
The height on a model or buoy is not the face you ride: a two-metre SW groundswell stands up to head-high-plus faces on the reef. And more than almost any spot, the wind is a co-equal gate — the alert here includes it deliberately, because a perfect SW swell is unsurfable on the wrong wind and world-class on a light west-to-northwest offshore.