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Winchesteer Bay/Umpqua Jetty ratings
Quality on a good day: 1.0
Consistency of Surf: 3.0
Difficulty Level: 2.5
Wind and Kite Surfing: 2.0
Crowds: 3.5

Overall: 2.3

See all 18 ratings

Based on 2 votes. Vote


Surf Report Feed

Winchesteer Bay/Umpqua Jetty Swell Statistics, Spring: Surf with Light or Offshore Winds

This image shows only the swells directed at Winchesteer Bay/Umpqua Jetty that coincided with light winds or offshore conditions through a typical northern hemisphere spring and is based upon 8682 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 represents 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 biggest spokes, was W, whereas the the prevailing wind blows from the WNW. 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 19% of the time, equivalent to 17 days. Open water swells exceeding >3m (>10ft) only occur 1.4% of the time in a typical northern hemisphere spring, equivalent to just one day but 8% of the time we expect swell in the range 2-3m (6.5-10ft) 8%, equivalent to (7 days). Taking into account the ratio of these swells that coincided with forecast offshore winds, and given the fact that Winchesteer Bay/Umpqua Jetty is exposed to open water swells, we estimate that clean surf can be found at Winchesteer Bay/Umpqua Jetty about 19% of the time and that surf is blown out by onshore wind 77% of the time. This is means that we expect 87 days with waves in a typical northern hemisphere spring, of which 17 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.