Stent Road - surf spot statistics

Stent Road in New Zealand is a consistent surf spot with year-round swell, primarily driven by ground swells, which dominate between 67-79% of the time. Wind swells contribute the rest, but there is rarely a flat day (0% no swell). The mean swell size increases from summer to winter, peaking at 2.5m from June to October, making these months ideal for larger waves. However, wind conditions are challenging, with bad winds (onshore or cross-shore) occurring 82-89% of the time year-round. The best balance of swell size and slightly improved wind conditions occurs in autumn (April-May) and late winter (August), where ground swells remain strong (76-79%) and mean swell hovers around 2.1-2.5m, though winds are still unfavorable 83-85% of the time. Summer (January-March) offers smaller swells (1.8-1.9m) and marginally better winds (13-18% good conditions), but the waves are less powerful. Overall, Stent Road is most rewarding for experienced surfers willing to tolerate tricky winds, with the biggest and cleanest opportunities likely in late autumn and early winter (May-July). For smaller but slightly more manageable conditions, February and March provide a modest window before winds deteriorate further into spring and summer.

September at Stent Road delivers consistent, powerful surf with an average swell height of 2.5m and a solid 12.7s period, ensuring well-formed, long-interval waves. The best swells come from the WSW direction, which dominates the larger size ranges (1.5m–3m+), particularly between 1.5–2.5m, where it makes up 30–40% of occurrences. SW and S/SSE swells also contribute, though less frequently, with occasional overhead waves. Wind conditions are less favorable overall—only 12% of winds are ideal (primarily light offshore from the ENE or NE). The majority of winds are onshore (WSW, W, and SW) at 10–30kph, which can create choppy conditions. Expect the best sessions when a strong WSW swell coincides with lighter ENE winds, offering clean, powerful waves. Mid-sized (1.5–2.5m) WSW swells are the most reliable, while larger days (over 2.5m) are rarer but epic for experienced surfers. Winds are the limiting factor, so watch for those rare clean windows.