uk es it fr pt nl
Jongensfontein ratings
Quality on a good day: 4.0
Consistency of Surf: 4.0
Difficulty Level: 3.0
Crowds: 3.0

Overall: 3.7

See all 18 ratings

Based on 1 vote. Vote


Surf Report Feed

Jongensfontein Swell Statistics, September: Surf with Light or Offshore Winds

This image shows only the swells directed at Jongensfontein 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 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 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 dominant swell direction, shown by the longest spokes, was SSW (which was the same as the prevailing wind direction). 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 35% of the time, equivalent to 10 days. Open water swells exceeding >3m (>10ft) only occur 4% of the time in a typical September, equivalent to just one day but 20% of the time we expect swell in the range 2-3m (6.5-10ft) 20%, equivalent to (6 days). Taking into account the fraction of these swells that coincided with forecast offshore winds, and given the fact that Jongensfontein is exposed to open water swells, we estimate that clean surf can be found at Jongensfontein about 35% of the time and that surf is spoilt by onshore wind 59% of the time. This is means that we expect 28 days with waves in a typical September, of which 10 days should be clean enough to surf.

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.