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Joss Bay ratings
Quality on a good day: 2.8
Consistency of Surf: 1.8
Difficulty Level: 4.0
Wind and Kite Surfing: 3.8
Crowds: 4.0

Overall: 4.0

See all 18 ratings

Based on 5 votes. Vote


Surf Report Feed

Joss Bay Swell Statistics, Autumn: Surf with Light or Offshore Winds

This image shows only the swells directed at Joss Bay that coincided with light winds or offshore conditions over a normal northern hemisphere autumn. It is based on 8462 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 show increasing swell sizes and red illustrates biggest swells greater than >3m (>10ft). In both graphs, the area of any colour is proportional to how commonly that size swell occurs.

The diagram implies that the prevailing swell direction, shown by the longest spokes, was N, whereas the the prevailing wind blows from the WSW. 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 0.8% of the time, equivalent to 1 days. Open sea swells exceeding >3m (>10ft) are unlikely to happen in a normal northern hemisphere autumn. Taking into account the proportion of these swells that coincided with forecast offshore winds, and given the fact that Joss Bay is slightly protected from open water swells, we estimate that clean surf can be found at Joss Bay about 0.8% of the time and that surf is spoilt by onshore wind 7% of the time. This is means that we expect 7 days with waves in a typical northern hemisphere autumn, of which 1 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.