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Uluwatu ratings
Quality on a good day: 4.4
Consistency of Surf: 4.2
Difficulty Level: 4.0
Wind and Kite Surfing: 1.0
Crowds: 1.6

Overall: 3.4

See all 18 ratings

Based on 7 votes. Vote


Surf Report Feed

Uluwatu Swell Statistics, August: Surf with Light or Offshore Winds

This image shows only the swells directed at Uluwatu that coincided with light winds or offshore conditions through a typical August. 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 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 highest swells greater than >3m (>10ft) are shown in red. In both graphs, the area of any colour is proportional to how commonly that size swell happens.

The diagram implies that the most common swell direction, shown by the largest spokes, was SSW, whereas the the dominant wind blows from the ESE. 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 99% of the time, equivalent to 31 days. Open water swells exceeding >3m (>10ft) only arise 1.9% of the time in a typical August, equivalent to just one day but 67% of the time we expect swell in the range 2-3m (6.5-10ft) 67%, equivalent to (21 days). Taking into account the proportion of these swells that coincided with forecast offshore winds, and given the fact that Uluwatu is exposed to open water swells, we calculate that clean surf can be found at Uluwatu about 99% of the time and that surf is spoilt by onshore wind 1.0% of the time. This is means that we expect 31 days with waves in a typical August, of which 31 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.