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.

December at Dee Why Point offers decent surfing conditions with an average swell height of 1.5m and a solid period of 8.4s, providing consistent, rideable waves. The swell is primarily from the ENE to SSE, with the largest contributions coming from ENE (peaking at 11.18% for 1-1.5m waves) and SSE (8.92% for 1-1.5m). These directions, combined with frequent wave heights in the 1-2.5m range, suggest well-shaped, punchy waves when the angles align properly. Wind conditions are a mixed bag—while only 18% of the time is ideal (likely light offshore or cross-offshore), the predominant winds are NE to SSE, often in the 10-20kph range, which can cause choppiness. Stronger winds (20-30kph) from NNE to S occur occasionally, potentially ruining the surface quality. Overall, December delivers a fair share of surfable days, but patience and timing are key to scoring clean conditions, especially when ENE swells coincide with lighter winds.