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Hilo Breakwall ratings
Quality on a good day: 5.0
Consistency of Surf: 1.0
Difficulty Level: 4.0
Crowds: 5.0

Overall: 3.6

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Surf Report Feed

Hilo Breakwall Swell Statistics, October: Surf with Light or Offshore Winds

The rose diagram shows only the swells directed at Hilo Breakwall that coincided with light winds or offshore conditions through a typical October and is based upon 2480 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 red represents the biggest swells, greater than >3m (>10ft). In each graph, the area of any colour is proportional to how commonly that size swell was forecast.

The diagram implies that the prevailing swell direction, shown by the largest spokes, was N, 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 22% of the time, equivalent to 7 days. Open sea swells exceeding >3m (>10ft) are unlikely to occur in a normal October but 10% of the time we expect swell in the range 2-3m (6.5-10ft) 10%, equivalent to (3 days). Taking into account the fraction of these swells that coincided with expected offshore winds we think that that clean surf can be found at Hilo Breakwall about 22% of the time and that surf is blown out by onshore wind 33% of the time. This is means that we expect 17 days with waves in a typical October, of which 7 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.