Cronulla - surf spot statistics

Cronulla, Australia, offers a mix of swell and wind conditions throughout the year, with the best surfing months typically occurring during the southern hemisphere winter. The most consistent ground swells arrive between May and August, peaking in July with 57% ground swell contribution—indicating cleaner, more organized waves generated by distant storms. While the mean swell size remains relatively stable around 1.4-1.7m, winter months (June-August) provide the most reliable wave energy, though slightly smaller compared to early autumn or late spring. Wind conditions are a limiting factor year-round, but May-June stand out with the highest likelihood of good offshore winds (37-38%). Summer months (December-February) are dominated by wind swells (77-85%) and poor onshore winds (83-86%), making conditions choppy and less ideal. Autumn (March-May) and late winter to spring (July-September) offer a balance, with improving ground swell presence and moderately better wind chances. For advanced surfers seeking quality waves, the window from May to August is optimal, particularly June when swell consistency and wind conditions align best. Outside this period, expect shorter-period wind swells and frequent onshore breezes, reducing wave quality.

October at Cronulla offers decent surf conditions with an average swell height of 1.6m and a solid period of 9.9s, indicating consistent, well-formed waves. The swell is predominantly from the SE to SSE direction, with the highest frequency in the 1-1.5m range (13.7% SE, 10.43% SSE) and good contributions in the 1.5-2m range (7.32% SE, 7.97% SSE). Larger waves (2-2.5m) make up about 5.66% from the SSE, providing occasional punchier sets. ENE and ESE swells also contribute, though less frequently. Wind conditions are ideal for surfing only 21% of the time, with the most favorable winds likely coming from the west or northwest, which are offshore for this spot. However, northerly and easterly winds are more common, often bringing onshore or cross-shore breezes that can degrade wave quality. Expect variable wind speeds, with 10-20kph being the most frequent range. Overall, October delivers workable waves, particularly when the swell aligns with lighter winds, but consistency in clean conditions is moderate.