uk es it fr pt nl
Kohala Lighthouse Voti
Qualità su una buona giornata: 5.0
Coerenza del surf: 4.0
Livello di difficoltà: 4.0
Folle: 3.0

Overall: 4.0

Vedi tutti i 18 voti

basato su 2 voti. Voto


Surf Report Feed

Kohala Lighthouse Swell Statistics, Winter: 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 northern hemisphere winter. It is based on 6931 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 highest swells greater than >3m (>10ft) are shown in red. In both graphs, the area of any colour is proportional to how often that size swell was forecast.

The diagram indicates that the prevailing swell direction, shown by the largest spokes, was NNW, whereas the the dominant 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 13% of the time, equivalent to 12 days. Open water swells exceeding >3m (>10ft) only occur 0.8% of the time in a typical northern hemisphere winter, equivalent to just one day but 3% of the time we expect swell in the range 2-3m (6.5-10ft) 3%, equivalent to (3 days). 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 calculate that clean surf can be found at Kohala Lighthouse about 13% of the time and that surf is messed up by onshore wind 30% of the time. This is means that we expect 39 days with waves in a typical northern hemisphere winter, of which 12 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.