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Donut Island Voti
Qualità su una buona giornata: 4.0
Coerenza del surf: 1.0
Livello di difficoltà: 4.0
Folle: 5.0

Overall: 3.6

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Surf Report Feed

Donut Island Swell Statistics, Ottobre: Surf with Light or Offshore Winds

This image shows only the swells directed at Donut Island that coincided with light winds or offshore conditions through a typical October and is based upon 2973 predictions, one every 3 hours. The direction of the spokes show where quality surf generating swell comes from. Five colours represent increasing wave sizes. Very small swells of less than 0.5m (1.5 feet) high are shown in blue. Green and yellow show increasing swell sizes and biggest swells greater than >3m (>10ft) are shown in red. In both graphs, 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 longest spokes, was ENE, whereas the the prevailing wind blows from the W. 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 26% of the time, equivalent to 8 days. Open sea swells exceeding >3m (>10ft) are unlikely to arise in a normal October. Taking into account the proportion of these swells that coincided with forecast offshore winds, and given the fact that Donut Island is exposed to open water swells, we calculate that clean surf can be found at Donut Island about 26% of the time and that surf is blown out by onshore wind 21% of the time. This is means that we expect 15 days with waves in a typical October, of which 8 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.