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James Kealoha Beach Park ratings
Quality on a good day: 2.0
Consistency of Surf: 3.0
Difficulty Level: 1.0
Crowds: 3.0

Overall: 3.2

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Surf Report Feed

James Kealoha Beach Park Swell Statistics, September: Surf with Light or Offshore Winds

The rose diagram shows only the swells directed at James Kealoha Beach Park that coincided with light winds or offshore conditions over a normal September. It is based on 2880 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 show 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 frequently that size swell happens.

The diagram suggests that the dominant swell direction, shown by the largest spokes, was NE, whereas the the prevailing wind blows from the E. 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 23% of the time, equivalent to 7 days. Open sea swells exceeding >3m (>10ft) are unlikely to arise in a normal September but 19% of the time you can expect swell in the range 1.3-2m (4-6.5ft) 19%, equivalent to (6 days). Taking into account the fraction of these swells that coincided with expected offshore winds, and given the fact that James Kealoha Beach Park is exposed to open water swells, we think that that clean surf can be found at James Kealoha Beach Park about 23% of the time and that surf is spoilt by onshore wind 52% of the time. This is means that we expect 22 days with waves in a typical September, of which 7 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.