Johanna - surf spot statistics

Johanna in Australia is a powerful and consistent reef break that receives high-quality ground swells year-round, making it a reliable spot for experienced surfers. The swell is almost always present, with ground swells dominating 89-98% of the time—highest from March through September, peaking at 98% in May, September, and October. Wind conditions, however, are far less favorable, with bad winds (onshore or cross-shore) affecting 74-83% of days, meaning clean conditions are rare. The best chance for good winds (offshore) is in autumn (April-May), reaching up to 26% in April. Swell size builds from late autumn through winter, averaging 2.8-3.2m from April to September, with the biggest waves in August (3.2m). Summer (December-February) sees slightly smaller swells (2.4-2.5m) but the worst wind conditions (80-83% unfavorable). The optimal window is April to May, when swell size is solid (2.8-2.9m), ground swells are most consistent (97-98%), and wind conditions are relatively better (25-26% good). Winter (June-August) offers the largest waves (3.0-3.2m) but worse winds, while spring (September-November) remains big but with poor wind odds. Overall, advanced surfers should target mid-autumn for the best balance of swell and wind, accepting that Johanna is more about raw power than perfect conditions.

February at Johanna, Australia, delivers solid surf conditions with a dominant southwest swell, making it a reliable spot for experienced surfers. The average swell height is 2.4m with a strong 12.6s period, ensuring powerful, well-spaced waves. The swell direction is predominantly SW (42.8% of waves over 1.5m), followed by SSW and S, providing consistent, clean lines that work well with the beach’s orientation. Smaller contributions from SE and SSE add variety, but the majority of waves are in the 1.5-2.5m range, ideal for good turns and barrels when conditions align. Wind is the main limiting factor, with only 20% of days offering ideal offshore conditions (likely light E/NE winds). Prevailing onshore winds come from the S/SSW/SW (peaking around 10-20kph), which can create choppier surfaces, particularly in the afternoons. Stronger winds (20-30kph+) are common from SW/WSW, further reducing quality. However, early mornings or days with lighter winds still provide cleanish walls. Overall, February offers punchy, powerful waves with good consistency, but wind management is key—best sessions occur during dawn patrols or when high pressure brings offshore flow. Experienced surfers will find plenty of size and energy, though it’s less forgiving on weak winds or smaller days.