Dee Why Point - surf spot statistics

Dee Why Point, Australia, offers surfable conditions year-round, but the best months for quality waves and favorable winds are typically from May to August. During this period, ground swell percentages increase to around 30%, while wind swell remains dominant but slightly reduced compared to other months. The mean swell size hovers around 1.5–1.6 meters, providing consistent, manageable waves. Wind conditions improve significantly in these months, with good winds occurring 42–43% of the time in May, June, and July—far better than the summer months when onshore winds (bad conditions) dominate at over 80%. Autumn (April–May) and early spring (September) also offer decent windows with a gradual transition in swell composition and wind quality, though not as reliably as mid-winter. The summer months (December–February) suffer from high wind swell dominance (85–87%) and poor wind conditions (bad winds 82–84%), making sessions less consistent despite the similar swell size. For surfers prioritizing cleaner, more powerful waves with offshore or light wind assistance, the winter window from May to July stands out as the prime season at Dee Why Point.

Dee Why Point in May offers surfable conditions with an average swell height of 1.6m and a decent period of 9.7s, providing consistent energy for rides. The dominant swell directions are S, SSE, and SE, contributing to the majority of waves in the 1-2.5m range, with SSE swells delivering the largest proportions of larger waves (1.5-2.5m). These southerly swells align well with the break, making them the most favorable for quality surf. Wind conditions are surfable 42% of the time, with lighter breezes (under 20kph) predominantly coming from the NW, W, and WSW, which often align offshore or cross-offshore for this spot. Stronger winds tend to be southerly, potentially causing choppier conditions. Expect a mix of mid-sized, groomed waves when winds cooperate, but keep an eye on southerly blow as it can degrade surface quality. Overall, May delivers workable surf, especially when S/SSE swells meet lighter NW quadrant winds.