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Uchizuma ratings
Quality on a good day: 2.0
Consistency of Surf: 2.0
Difficulty Level: 1.0
Crowds: 3.0

Overall: 2.7

See all 18 ratings

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Surf Report Feed

Uchizuma Swell Statistics, All Year: Surf with Light or Offshore Winds

The rose diagram shows only the swells directed at Uchizuma that coincided with light winds or offshore conditions over a normal year. It is based on 34628 predictions, one every 3 hours. The direction of the spokes show where quality surf generating swell comes from. Five colours show increasing wave sizes. The smallest swells, less than 0.5m (1.5 feet), high are coloured blue. Green and yellow illustrate increasing swell sizes and biggest swells greater than >3m (>10ft) are shown in red. In both graphs, 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 longest spokes, was SE, whereas the the prevailing wind blows from the NNW. 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 8% of the time, equivalent to 29 days. Open water swells exceeding >3m (>10ft) only arise 0.3% of the time in a typical year, equivalent to just one day but 2% of the time we expect swell in the range 2-3m (6.5-10ft) 2%, equivalent to (7 days). Taking into account the fraction of these swells that coincided with forecast offshore winds, and given the fact that Uchizuma is slightly protected from open water swells, we estimate that clean surf can be found at Uchizuma about 8% of the time and that surf is messed up by onshore wind 11% of the time. This is means that we expect 69 days with waves in a typical year, of which 29 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.