Aberdeen Swell Statistics, June: Surf with Light or Offshore Winds
This image shows only the swells directed at Aberdeen that coincided with light winds or offshore conditions over a normal June. It is based on 2305 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 represent increasing swell sizes and biggest 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 occurs.
The diagram implies that the prevailing swell direction, shown by the largest spokes, was SE, whereas the the prevailing wind blows from the SSE. 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 9% of the time, equivalent to 3 days. Open sea swells exceeding >3m (>10ft) are unlikely to happen in a normal June. Taking into account the ratio of these swells that coincided with predicted offshore winds, and given the fact that Aberdeen is exposed to open water swells, we estimate that clean surf can be found at Aberdeen about 9% of the time and that surf is blown out by onshore wind 23% of the time. This is means that we expect 10 days with waves in a typical June, of which 3 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.