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.

October at Port Mary offers solid surf conditions with a dominant swell pattern from the southwest to west-southwest, generating consistent waves. The average swell height is 2.3m with a favorable period of 10.9s, indicating powerful, well-spaced waves—ideal for experienced surfers. The majority of swell energy comes from the SW and WSW directions, with wave heights frequently in the 1.5-2.5m range (peaking at 8.7% for 1.5-2m WSW swells). While smaller waves (0.5-1.5m) are present, overhead and larger waves are common, particularly on WSW swells. Wind conditions are a mixed bag, with only 18% of days offering ideal offshore or light cross-shore winds (likely from the northeast or east). However, prevailing winds are often onshore (SSE to SW) at moderate speeds (10-30kph), which can create choppy or less clean conditions. For skilled surfers, October delivers strong, sizable surf, but wind quality is the limiting factor—best sessions will coincide with those rarer clean wind windows. Expect heavier, more powerful waves on WSW swells, while SW swells may offer slightly more manageable but still punchy conditions.