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City Beach Groyne ratings
Quality on a good day: 2.5
Consistency of Surf: 2.7
Difficulty Level: 2.2
Wind and Kite Surfing: 3.0
Crowds: 2.0

Overall: 3.1

See all 18 ratings

Based on 6 votes. Vote


Surf Report Feed

City Beach Groyne Swell Statistics, Autumn: Surf with Light or Offshore Winds

This image shows only the swells directed at City Beach Groyne that coincided with light winds or offshore conditions through a typical southern hemisphere autumn. It is based on 8052 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 shows largest swells greater than >3m (>10ft). In each graph, the area of any colour is proportional to how frequently that size swell occurs.

The diagram suggests that the most common swell direction, shown by the largest spokes, was WSW, whereas the the most common wind blows from the SSE. 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 35% of the time, equivalent to 32 days. Open water swells exceeding >3m (>10ft) only happen 1.2% of the time in a typical southern hemisphere autumn, equivalent to just one day but 11% of the time we expect swell in the range 2-3m (6.5-10ft) 11%, equivalent to (10 days). Taking into account the fraction of these swells that coincided with forecast offshore winds, and given the fact that City Beach Groyne is slightly protected from open water swells, we estimate that clean surf can be found at City Beach Groyne about 35% of the time and that surf is blown out by onshore wind 47% of the time. This is means that we expect 75 days with waves in a typical southern hemisphere autumn, of which 32 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.