This image shows only the swells directed at Bean Hollow State Beach that coincided with light winds or offshore conditions over a normal November. It is based on 1680 predictions, one every 3 hours. The direction of the spokes show where quality surf generating swell comes from. Five colours illustrate increasing wave sizes. Blue shows the smallest swells, less that 0.5m (1.5 feet) high. Green and yellow represent increasing swell sizes and red shows the largest swells, greater than >3m (>10ft). In both graphs, the area of any colour is proportional to how often that size swell occurs.
The diagram indicates that the dominant swell direction, shown by the biggest spokes, was WSW, whereas the the most common wind blows from the NNW. 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 3% of the time, equivalent to 1 days. Open sea swells exceeding >3m (>10ft) are unlikely to happen in a normal November. Taking into account the proportion of these swells that coincided with forecast offshore winds, and given the fact that Bean Hollow State Beach is slightly protected from open water swells, we estimate that clean surf can be found at Bean Hollow State Beach about 3% of the time and that surf is spoilt by onshore wind 8% of the time. This is means that we expect 3 days with waves in a typical November, of which 1 days should be surfable.
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.