Margaret River - surf spot statistics

Margaret River is a world-class surf destination with consistent year-round swell, primarily driven by ground swells, which dominate 92-97% of the time. The best months for surfers are typically April through September, when the mean swell size increases to 2.7m-3.7m, offering powerful, clean waves. May to August stands out with the largest swells (3.1m-3.7m), ideal for experienced surfers seeking big, hollow waves. However, wind conditions are a challenge, as bad winds (onshore or cross-shore) prevail 76-85% of the time, peaking in the winter months. The most favorable wind conditions, though still limited, occur in April and May (24% good winds), making these months particularly appealing when clean offshore winds occasionally coincide with solid ground swells. The summer months (December-February) see smaller swells (2.3m-2.4m) and near-constant bad winds (85-88%), reducing surf quality. Overall, advanced surfers should target autumn and winter (April-September) for the biggest and most consistent waves, accepting the likelihood of windy conditions, while those seeking slightly smaller but still reliable waves might prefer early autumn (April-May) when wind conditions are marginally better.

Margaret River in August offers powerful and consistent surf, with an average swell height of 3.7m and a solid 14.1s period—indicating clean, well-spaced groundswells. The swell direction is predominantly from the SW to WSW (over 75% of waves 1.5m or larger), ensuring quality, steep faces ideal for experienced surfers. However, wind conditions are challenging, with only 15% of days providing ideal offshore winds (likely light E/NE breezes). The majority of winds are onshore (SW-WSW) at 10-30kph, creating choppy or cross-shore conditions, though the long period helps maintain swell quality. Expect sizable surf (2m+) around 50% of the time, with heavier WSW-W swells bringing occasional 2.5m+ bombs. This is a month for confident surfers comfortable in powerful waves, with patience required for those rare glassy mornings.