13th Beach - surf spot statistics

13th Beach in Australia offers consistent swell year-round, with ground swell dominating (80-94% of days) and minimal wind swell interference. The best months for surfers are typically from March to October, when ground swell probability peaks (88-94%) and average swell size increases slightly to 1.3-1.4m. Wind conditions, however, remain challenging, with bad onshore winds prevalent (69-78% of days). The most favorable wind windows appear in autumn and winter (April to September), where good offshore winds reach 26-31%—still not ideal but better than summer. May stands out with 93% ground swell and 31% good wind days, making it one of the more reliable months despite the persistent wind issues. Summer (December-February) is less consistent, with smaller swells (1.2m) and the worst wind conditions (83% bad). While 13th Beach rarely has flat spells (0-2% no-swell days), surfers should prioritize sessions during autumn and winter for cleaner, more powerful waves, accepting that wind quality remains a limiting factor.