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Avaliar Drumnacraig Beach


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Drumnacraig Beach Swell Statistics, Maio: Surf with Light or Offshore Winds

This image shows only the swells directed at Drumnacraig Beach that coincided with light winds or offshore conditions over a normal May. It is based on 2838 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 shows the largest swells, greater than >3m (>10ft). In each graph, the area of any colour is proportional to how frequently that size swell was forecast.

The diagram suggests that the prevailing swell direction, shown by the largest spokes, was NNW, whereas the the most common wind blows from the SSW. 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 1.1% of the time, equivalent to 0 days. Open sea swells exceeding >3m (>10ft) are unlikely to occur in a normal May. Taking into account the ratio of these swells that coincided with expected offshore winds, and given the fact that Drumnacraig Beach is exposed to open water swells, we calculate that clean surf can be found at Drumnacraig Beach about 1.1% of the time and that surf is blown out by onshore wind 8% of the time. This is means that we expect 3 days with waves in a typical May, of which 0 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.