uk es it fr pt nl
Kohala Lighthouse ratings
Quality on a good day: 5.0
Consistency of Surf: 4.0
Difficulty Level: 4.0
Crowds: 3.0

Overall: 4.0

See all 18 ratings

Based on 2 votes. Vote


Surf Report Feed

Kohala Lighthouse Swell Statistics, October: Surf with Light or Offshore Winds

This image shows only the swells directed at Kohala Lighthouse that coincided with light winds or offshore conditions through a typical October. It is based on 2976 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 illustrate increasing swell sizes and red illustrates 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 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 5% of the time, equivalent to 2 days. Open sea swells exceeding >3m (>10ft) are unlikely to occur in a normal October. Taking into account the proportion of these swells that coincided with forecast offshore winds, and given the fact that Kohala Lighthouse is exposed to open water swells, we estimate that clean surf can be found at Kohala Lighthouse about 5% of the time and that surf is messed up by onshore wind 31% of the time. This is means that we expect 11 days with waves in a typical October, of which 2 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.