uk es it fr pt nl
Banzai Pipeline and Backdoor ratings
Quality on a good day: 4.9
Consistency of Surf: 3.7
Difficulty Level: 4.8
Wind and Kite Surfing: 1.9
Crowds: 1.9

Overall: 4.0

See all 18 ratings

Based on 15 votes. Vote


Surf Report Feed

Banzai Pipeline and Backdoor Swell Statistics, Spring: Surf with Light or Offshore Winds

This image shows only the swells directed at Banzai Pipeline and Backdoor that coincided with light winds or offshore conditions through a typical northern hemisphere spring. It is based on 6580 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 show increasing swell sizes and red shows the highest swells, greater than >3m (>10ft). In either graph, the area of any colour is proportional to how frequently that size swell occurs.

The diagram suggests that the most common swell direction, shown by the longest spokes, was NNW, whereas the the dominant wind blows from the E. 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 36% of the time, equivalent to 33 days. Expect open water swells to exceed >3m (>10ft) 3% of the time (3 days). Taking into account the fraction of these swells that coincided with predicted offshore winds, and given the fact that Banzai Pipeline and Backdoor is exposed to open water swells, we calculate that clean surf can be found at Banzai Pipeline and Backdoor about 36% of the time and that surf is spoilt by onshore wind 11% of the time. This is means that we expect 43 days with waves in a typical northern hemisphere spring, of which 33 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.