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Port Robinson ratings
Quality on a good day: 3.0
Consistency of Surf: 3.0
Crowds: 4.0

Overall: 3.6

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Surf Report Feed

Port Robinson Swell Statistics, January: Surf with Light or Offshore Winds

This image shows only the swells directed at Port Robinson that coincided with light winds or offshore conditions over a normal January. It is based on 2620 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 illustrate increasing swell sizes and highest swells greater than >3m (>10ft) are shown in red. In either graph, the area of any colour is proportional to how commonly that size swell was forecast.

The diagram implies that the most common swell direction, shown by the longest spokes, was SE, whereas the the dominant wind blows from the NNE. 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 30% of the time, equivalent to 9 days. Open sea swells exceeding >3m (>10ft) are unlikely to occur in a normal January but 6% of the time we expect swell in the range 2-3m (6.5-10ft) 6%, equivalent to (2 days). Taking into account the proportion of these swells that coincided with forecast offshore winds, and given the fact that Port Robinson is exposed to open water swells, we think that that clean surf can be found at Port Robinson about 30% of the time and that surf is spoilt by onshore wind 40% of the time. This is means that we expect 22 days with waves in a typical January, of which 9 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.