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White Rock ratings
Quality on a good day: 4.6
Consistency of Surf: 2.8
Difficulty Level: 4.0
Wind and Kite Surfing: 1.0
Crowds: 4.2

Overall: 2.9

See all 18 ratings

Based on 6 votes. Vote


Surf Report Feed

White Rock Swell Statistics, Spring: Surf with Light or Offshore Winds

The rose diagram shows only the swells directed at White Rock that coincided with light winds or offshore conditions over a normal southern hemisphere spring. It is based on 8724 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 represents highest swells greater than >3m (>10ft). In either graph, the area of any colour is proportional to how often that size swell was forecast.

The diagram indicates that the dominant swell direction, shown by the largest spokes, was S, whereas the the dominant wind blows from the NW. 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 water swells exceeding >3m (>10ft) only occur 0.8% of the time in a typical southern hemisphere spring, equivalent to just one day but 8% of the time we expect swell in the range 2-3m (6.5-10ft) 8%, equivalent to (7 days). Taking into account the proportion of these swells that coincided with predicted offshore winds, and given the fact that White Rock is exposed to open water swells, we estimate that clean surf can be found at White Rock about 23% of the time and that surf is messed up by onshore wind 30% of the time. This is means that we expect 48 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.