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Ujung Genteng Harbour ratings
Quality on a good day: 3.5
Consistency of Surf: 4.0
Difficulty Level: 4.0
Wind and Kite Surfing: 4.0
Crowds: 3.5

Overall: 4.2

See all 18 ratings

Based on 2 votes. Vote


Surf Report Feed

Ujung Genteng Harbour Swell Statistics, September: Surf with Light or Offshore Winds

This image shows only the swells directed at Ujung Genteng Harbour that coincided with light winds or offshore conditions through a typical September. It is based on 2880 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 illustrate increasing swell sizes and red illustrates the biggest swells, greater than >3m (>10ft). In either graph, the area of any colour is proportional to how commonly that size swell was forecast.

The diagram implies that the most common swell direction, shown by the largest spokes, was SSW, whereas the the prevailing 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 95% of the time, equivalent to 28 days. Open water swells exceeding >3m (>10ft) only occur 3% of the time in a typical September, equivalent to just one day but 71% of the time we expect swell in the range 2-3m (6.5-10ft) 71%, equivalent to (21 days). Taking into account the fraction of these swells that coincided with forecast offshore winds, and given the fact that Ujung Genteng Harbour is exposed to open water swells, we think that that clean surf can be found at Ujung Genteng Harbour about 95% of the time and that surf is spoilt by onshore wind 4% of the time. This is means that we expect 30 days with waves in a typical September, of which 28 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.