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.