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J-Bay ratings
Quality on a good day: 4.2
Consistency of Surf: 3.7
Difficulty Level: 2.7
Wind and Kite Surfing: 1.0
Crowds: 2.7

Overall: 3.5

See all 18 ratings

Based on 6 votes. Vote


Surf Report Feed

J-Bay Swell Statistics, June: Surf with Light or Offshore Winds

This image shows only the swells directed at J-Bay that coincided with light winds or offshore conditions through a typical June and is based upon 2786 predictions, one every 3 hours. The direction of the spokes show where quality surf generating swell comes from. Five colours show increasing wave sizes. The smallest swells, less than 0.5m (1.5 feet), high are coloured blue. Green and yellow illustrate increasing swell sizes and largest swells greater than >3m (>10ft) are shown in red. In each graph, the area of any colour is proportional to how commonly that size swell occurs.

The diagram implies that the dominant swell direction, shown by the largest spokes, was SSW, whereas the the most common wind blows from the WNW. The chart at the bottom shows the same thing but without direction information. For example, swells larger than 1.5 feet (0.5m) coincided with good wind conditions 61% of the time, equivalent to 18 days. Expect open water swells to exceed >3m (>10ft) 23% of the time (7 days). Taking into account the fraction of these swells that coincided with expected offshore winds, and given the fact that J-Bay is exposed to open water swells, we estimate that clean surf can be found at J-Bay about 61% of the time and that surf is blown out by onshore wind 31% of the time. This is means that we expect 28 days with waves in a typical June, of which 18 days should be surfable.

IMPORTANT: Beta version feature! Swell heights are open water values from NWW3. There is no attempt to model near-shore effects. Coastal wave heights will generally be less, especially if the break does not have unobstructed exposure to the open ocean.