Surf forecastSpot statisticsHistorical report

Lefthanders seasonal overview

Lefthanders, Australia, is a world-class wave known for its powerful and consistent ground swells, offering some of the best left-hand barrels in the region. The spot benefits from a high percentage of ground swells year-round, ranging from 92% to 97%, with almost no days of flat conditions. The swell size varies seasonally, peaking in the winter months (June to August) with mean swell heights of 3.5-3.7m, making this the prime time for experienced surfers seeking heavy, hollow waves. The shoulder seasons (May and September) still provide strong swells (3.1m and 3.6m respectively) with slightly more manageable conditions, while October through April sees smaller but still solid waves (2.3-3.0m), better suited for intermediate surfers. Wind conditions, however, are a limiting factor—onshore winds dominate throughout the year, with good wind days peaking at only 24% in April and May. The best balance of size and favorable winds occurs in March, April, and May, when ground swells remain strong (2.4-3.1m) and the chance of good winds rises slightly to 20-24%. For those chasing the biggest and most powerful waves, June-August delivers the largest swells, but the high percentage of bad winds (83-85%) means patience is required. Overall, the optimal window for the best combination of swell size, consistency, and slightly better winds is from March to May, though dedicated surfers will find quality waves year-round if willing to wait for the right conditions.

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Conditions at Lefthanders in September

September at Lefthanders delivers powerful and consistent surf, with an average swell height of 3.6m and a solid 14s period, indicating well-organized, powerful waves. The majority of swell comes from the SW to WSW directions, with 11.25% of waves in the 2-2.5m range and 3.16% exceeding 2.5m from the SW—ideal for advanced surfers seeking size and energy. Smaller but still surfable swells (1.5-2m) are frequent from the SW (4.96%) and SSW (0.59%). Wind conditions are challenging, with only 15% of days offering ideal offshore winds. The predominant winds are SW to W, often blowing at 20-50kph, which can create onshore chop. However, lighter winds occasionally occur from the N-NE early in the day. Expect raw, powerful waves with occasional clean sessions when winds align, but be prepared for strong winds and heavier conditions. Experienced surfers will find quality rides, especially when wind cooperates.

Average Spot conditions at Lefthanders in September

Swell history for September

0 - 0.5
0.5 - 1
1 - 1.5
1.5 - 2.0
2.0 - 2.5
> 2.5 m

Wind history for September

0 - 10
10 - 20
20 - 30
30 - 40
40 - 50
> 50 km/h

Swell quality

Analyze the groundswell consistency at Lefthanders during September. Based on historical data, there is a % probability of groundswell occurring this month. The chart below provides a detailed breakdown of the average wave height distribution, offering deep insights into the swell quality and surf potential you can expect at Lefthanders for your next trip in September.

Ground swell

Ground swell by size

Wind conditions

Evaluate the wind and swell alignment at Lefthanders for September. Our analysis shows that favorable offshore or side-shore winds coincide with surfable swell approximately % of the time. The accompanying graph illustrates the average size distribution of waves during these optimal wind windows at Lefthanders.

Swell with good wind

Swell with good wind by size