Pennington Bay - surf spot statistics

Pennington Bay in Australia is a consistent surf spot with year-round swell activity, thanks to its high percentage of ground swell dominance (80%–94% across all months). The best conditions for surfers typically occur from March to September, when ground swell probabilities peak above 90%, and the mean swell size increases slightly to 1.5m–1.7m. However, wind conditions are often challenging, with bad (onshore or cross-shore) winds prevailing 75%–90% of the time throughout the year. The most favorable wind windows appear in the autumn and winter months (April–September), when good wind probabilities reach 22%–25%, slightly improving wave quality. Despite the persistent wind issues, the swell consistency and size make late autumn (May) and winter (June–August) the most promising periods for surfers, especially those who prioritize clean, powerful waves and are willing to take advantage of occasional offshore wind days. The summer months (December–February) see marginally smaller swells (1.4m–1.5m) and the worst wind conditions, making them less ideal for surfing unless you're willing to tolerate choppier waves. Overall, Pennington Bay is a reliable year-round surf destination, but the best balance between swell size and cleaner wind conditions occurs from May to September.

June at Pennington Bay offers consistent surf with an average swell height of 1.6m and a strong period of 13.3s, indicating powerful, well-spaced waves. The dominant swell direction is southerly, with the highest frequency (20.69%) in the 1-1.5m range from the S and solid contributions from SSW (7.76% in 1-1.5m, 7.17% in 1.5-2m). Larger swells (>2m) are less frequent but present, mostly from S and SSW. Wind conditions are less favorable, with only 23% ideal for surfing—offshore or light winds are rare. The predominant winds come from the NW-WSW quadrant, often blowing at moderate to strong speeds (10-30kph), creating bumpy or cross-shore conditions. Expect clean sessions when winds shift SE or weaker NW, but plan for choppier waves on average. Solid for experienced surfers, especially when S/SSW swells align with lighter winds.