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Ala Moana ratings
Quality on a good day: 1.0
Consistency of Surf: 5.0
Difficulty Level: 3.0
Crowds: 3.0

Overall: 3.2

See all 18 ratings

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Surf Report Feed

Ala Moana Swell Statistics, April: Surf with Light or Offshore Winds

This image shows only the swells directed at Ala Moana that coincided with light winds or offshore conditions over a normal April. It is based on 2160 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 red shows the highest swells, greater than >3m (>10ft). In each graph, the area of any colour is proportional to how commonly that size swell happens.

The diagram implies that the prevailing swell direction, shown by the longest spokes, was SSW, whereas the the dominant wind blows from the S. 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 6% of the time, equivalent to 2 days. Open sea swells exceeding >3m (>10ft) are unlikely to arise in a normal April. Taking into account the proportion of these swells that coincided with expected offshore winds, and given the fact that Ala Moana is exposed to open water swells, we calculate that clean surf can be found at Ala Moana about 6% of the time and that surf is blown out by onshore wind 94% of the time. This is means that we expect 30 days with waves in a typical April, of which 2 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.