Port Mary - surf spot statistics

Port Mary offers the most consistent and favorable surfing conditions during the winter months, particularly from December through February. During this period, ground swell dominates (77–81%), providing powerful, well-organized waves with mean swell heights ranging from 2.5 to 2.7 meters—ideal for experienced surfers. However, wind conditions are less favorable, with bad onshore winds occurring 79–84% of the time, which can create choppy surf if not timed properly. The shoulder months of November and March still deliver solid ground swell (65–67%) and slightly better wind windows compared to peak winter. Spring (April–May) and fall (October) present a mix of ground and wind swells, with diminishing swell size (1.5–2.3m) but marginally improved wind conditions. Summer (June–September) is the least reliable season, with small, wind-driven swells (1.2–1.8m) and frequent poor winds, making it suitable only for beginners or longboarders on rare clean days. For quality waves, target December–February when ground swells are biggest and most consistent, though patience is needed for favorable winds.

April at Port Mary offers consistent surf with an average swell height of 2.0m and a solid 11.2s period, providing well-organized, powerful waves. The dominant swell directions are WSW (34.49% of waves over 1m), SW (17.47%), and S (3.22%), delivering clean, rideable energy. Wave heights are most frequently in the 1.5-2.5m range (27.38% occurrence), with smaller proportions of larger or weaker conditions. Wind conditions are challenging, with only 27% of days offering ideal offshore or light cross-shore flow (generally from N-NE). SE-SSW winds prevail (22.64% of observations), often creating onshore chop, though weaker WSW-WNW winds (7.03%) occasionally provide cleaner sessions. Expect a mix of quality days with groomed overhead waves and wind-affected sessions, demanding selectivity—best surfed during early mornings or when wind patterns align with swell direction for optimal shape. Advanced surfers will find the most opportunity, particularly when larger WSW swells meet favorable winds.