Dungeons seasonal overview
Best Surf Season (May - August)
Winter in the Southern Hemisphere is prime time for Dungeons. The long-fetch swells generated by the Roaring Forties become a consistent presence, with average heights pushing above 2.6m and periods often exceeding 12 seconds. The ideal offshore wind from the north to northeast quadrant becomes more frequent as strong high-pressure systems stall over the interior, occasionally setting up clean conditions. While the percentage of perfect wind remains modest (up to 22% in June), when it aligns with a solid SW to SSW groundswell, the wave quality is simply world-class. This is the time to charge.
Fair Surf Season (March - April & September - October)
These transitional months see the swell machine still active but less consistent. Average heights linger around 2.4-2.7m with solid periods, but the wind patterns are more chaotic. The transition between summer and winter circulation brings a mix of onshore SE trades and the first or last pushes of cold fronts. While you won't score the pumping consistency of winter, the cleaner windows offer fun, powerful surf, especially when a passing front clears the air and delivers a crisp north wind. It's a gamble, but the rewards can be good.
Low Surf Season (November - February)
The summer months are the most challenging for surfers at Dungeons. Average swells drop to around 2.3m, and the wave period sits in the 11-second range – still punchy but less powerful. The bigger issue is the wind: persistent SE to SSE winds (often over 30kph) blow directly onshore, ruining wave quality. The ideal offshore wind from the north occurs only 5-6% of the time. While occasional southerly swells do arrive, they are usually accompanied by onshore conditions. This season is defined by waiting game – best for the patient surfer who can spot a rare north wind window.
Loading chart...
Conditions at Dungeons in September
September: Spring Transition and Onshore Return
Spring brings a noticeable drop in consistency. Average swell falls to 2.7m and period to 12.1s. The swell direction remains favourable (SW and WSW 27.5%), but the wind pattern is shifting back to onshore. Ideal wind percentage drops to 10%, with north winds (N, NNW, NW) at 21.2% and SE-SSE winds climbing to 34.6%. The transitional nature of the atmosphere means more mixed conditions: frontal passages can still deliver north winds, but they are often short-lived. Surfable days are less predictable, but the occasional strong S-SSW swell with a north wind can still produce excellent waves.
Average Spot conditions at Dungeons in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Dungeons 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 Dungeons for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Dungeons 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 Dungeons.
