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Cathedral Rock ratings
Quality on a good day: 4.0
Consistency of Surf: 3.5
Difficulty Level: 3.0
Wind and Kite Surfing: 1.0
Crowds: 3.0

Overall: 3.0

See all 18 ratings

Based on 2 votes. Vote


Surf Report Feed

Cathedral Rock Swell Statistics, Winter: Surf with Light or Offshore Winds

This image shows only the swells directed at Cathedral Rock that coincided with light winds or offshore conditions through a typical southern hemisphere winter. It is based on 7266 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 illustrates largest 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 dominant swell direction, shown by the biggest spokes, was WSW, 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 13% of the time, equivalent to 12 days. Open sea swells exceeding >3m (>10ft) are unlikely to happen in a normal southern hemisphere winter but 3% of the time we expect swell in the range 2-3m (6.5-10ft) 3%, equivalent to (3 days). Taking into account the ratio of these swells that coincided with expected offshore winds, and given the fact that Cathedral Rock is slightly protected from open water swells, we think that that clean surf can be found at Cathedral Rock about 13% of the time and that surf is spoilt by onshore wind 32% of the time. This is means that we expect 41 days with waves in a typical southern hemisphere winter, of which 12 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.