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Woonona ratings
Quality on a good day: 3.7
Consistency of Surf: 4.3
Difficulty Level: 2.3
Wind and Kite Surfing: 3.0
Crowds: 2.3

Overall: 3.3

See all 18 ratings

Based on 3 votes. Vote


Surf Report Feed

Woonona Swell Statistics, September: Surf with Light or Offshore Winds

This image shows only the swells directed at Woonona that coincided with light winds or offshore conditions through a typical September. It is based on 2880 predictions, one every 3 hours. The direction of the spokes show where quality surf generating swell comes from. Five colours illustrate increasing wave sizes. Blue shows the smallest swells, less that 0.5m (1.5 feet) high. Green and yellow illustrate increasing swell sizes and red represents highest swells greater than >3m (>10ft). In each graph, the area of any colour is proportional to how commonly that size swell happens.

The diagram implies that the most common swell direction, shown by the biggest spokes, was ENE, whereas the the dominant 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 14% of the time, equivalent to 4 days. Open sea swells exceeding >3m (>10ft) are unlikely to arise in a normal September. Taking into account the proportion of these swells that coincided with predicted offshore winds, and given the fact that Woonona is exposed to open water swells, we calculate that clean surf can be found at Woonona about 14% of the time and that surf is spoilt by onshore wind 15% of the time. This is means that we expect 9 days with waves in a typical September, of which 4 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.