uk es it fr pt nl
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

Based on 1 vote. Vote


Surf Report Feed

Uchizuma Swell Statistics, Winter: Surf with Light or Offshore Winds

This image shows only the swells directed at Uchizuma that coincided with light winds or offshore conditions over a normal northern hemisphere winter and is based upon 7765 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 represent increasing swell sizes and largest swells greater than >3m (>10ft) are shown in red. In either graph, the area of any colour is proportional to how often that size swell was forecast.

The diagram indicates that the dominant swell direction, shown by the largest spokes, was SE, whereas the the most common 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 5% of the time, equivalent to 5 days. Open sea swells exceeding >3m (>10ft) are unlikely to occur in a normal northern hemisphere winter but 4% of the time you can expect swell in the range 1.3-2m (4-6.5ft) 4%, equivalent to (4 days). Taking into account the ratio of these swells that coincided with expected 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 5% of the time and that surf is messed up by onshore wind 3% of the time. This is means that we expect 7 days with waves in a typical northern hemisphere winter, of which 5 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.