uk es it fr pt nl
E-Bay ratings
Quality on a good day: 4.0
Consistency of Surf: 3.0
Difficulty Level: 4.0
Crowds: 3.0

Overall: 3.2

See all 18 ratings

Based on 1 vote. Vote


Surf Report Feed

E-Bay Swell Statistics, Spring: Surf with Light or Offshore Winds

The rose diagram shows only the swells directed at E-Bay that coincided with light winds or offshore conditions over a normal southern hemisphere spring. It is based on 7252 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 represent increasing swell sizes and red illustrates the highest swells, greater than >3m (>10ft). In either graph, the area of any colour is proportional to how frequently that size swell occurs.

The diagram suggests that the dominant swell direction, shown by the largest spokes, was SW, whereas the the dominant wind blows from the SSW. 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 23% of the time, equivalent to 21 days. Open sea swells exceeding >3m (>10ft) are unlikely to happen in a normal southern hemisphere spring but 2% of the time we expect swell in the range 2-3m (6.5-10ft) 2%, equivalent to (2 days). Taking into account the ratio of these swells that coincided with expected offshore winds, and given the fact that E-Bay is exposed to open water swells, we calculate that clean surf can be found at E-Bay about 23% of the time and that surf is messed up by onshore wind 22% of the time. This is means that we expect 41 days with waves in a typical southern hemisphere spring, of which 21 days should be clean enough to surf.

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.