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.

May at Margaret River delivers powerful and consistent surf, with an average swell height of 3.1m and a solid 13.7s period, indicating well-groomed, high-energy waves. The swell is predominantly SW (27.3% of waves over 2m, with the majority in the 2-2.5m range) and SSW (3.7% over 2m), producing quality groundswells that suit experienced surfers. Smaller fractions from W and WSW add variety but rarely disrupt the dominant SW energy. Wind conditions are less favorable, with only 24% of days offering ideal offshore (E to NE) or light cross-shore winds. The prevailing winds are from the N/NW quadrant (often 10-30kph), which can create onshore chop, especially during stronger W/WNW gusts (20-40kph in 6-10% of cases). When winds align, the spot fires with clean, heavy walls, but wind management is key—wait for early mornings or rare E/ENE days (under 20kph) for optimal conditions. Overall, May brings serious waves for confident surfers, though patience is required for the best sessions.