Sumner Avenue - surf spot statistics

Sumner Avenue offers surfable conditions year-round, but the best months for consistent, quality waves are September through November. During September, ground swell presence increases significantly to 24%, the highest of the year, while wind swell remains dominant at 65%. Swell size averages a decent 0.9m, and wind conditions improve slightly with 26% good wind days—still somewhat marginal but better than most other months. October follows with a solid mix of ground (15%) and wind swells (66%), maintaining a 0.9m average swell size. While wind conditions degrade slightly (21% good winds), the swell consistency remains favorable. November sees a drop in ground swell (11%) but maintains similar conditions to October. Late summer and early fall (August-September) also show promise with August having a noticeable ground swell increase (12%) and September peaking in ground swell contribution. Winter months (December-February) bring more wind swell dominance (62–66%) and poor wind conditions (81–83% bad winds), though swell size stays around 0.8m. Spring and early summer (April-July) suffer from higher wind swell influence (77–84%) and generally unfavorable winds (76–80% bad). While smaller swells (0.7–0.9m) persist, the wind quality makes these months less ideal. Overall, September stands out as the best month for surf with the highest ground swell contribution and marginally better winds, followed by October and November for more balanced conditions.

Sumner Avenue in February offers relatively small but rideable surf, with an average swell height of 0.8m and a decent period of 7.6s, providing some energy for maneuverable waves. The most consistent swell direction is from the SE-ESE-SSE sector, which aligns best with the beach and generates the highest proportion of surfable waves (around 1–2.5m). However, the majority of waves are in the 0.5–1.5m range, making it more suitable for beginners or longboarders rather than advanced surfers seeking powerful conditions. Wind conditions are only favorable 19% of the time, with the biggest issue being onshore winds from the W-WNW-NW directions, which frequently create choppy or disrupted surf. Cleaner conditions occur when winds are light or offshore (NE-E), but these are less common. Expect smaller, manageable waves with occasional mid-sized pulses, but wind quality will be the limiting factor for good sessions. Patience will be key for scoring the best days.