Surf forecastStatisticsHistorical report

Maroubra seasonal overview

Best Surf Season (May - August)

As the Southern Hemisphere winter sets in, Maroubra comes alive with consistent, quality surf. From May through August, the Tasman Sea pumps out a steady stream of long-period groundswell from the E-SE quadrant, wrapping nicely into the east-facing beach. Offshore winds from the W to NW dominate, with ideal wind conditions occurring over 37-41% of the time. This is when the sandbars hold their shape best and the sets are both powerful and clean. Expect average wave heights around 1.6-1.8m and periods often exceeding 9.5s, making for punchy, rippable waves.

Fair Surf Season (March - April & September - October)

The transition months shoulder the seasons and offer a mixed bag. March and April see the start of the autumn pattern with longer period swell from the S and SSE, while offshore winds still blow over 20-31% of the time. September and October experience a gradual warming and weakening of the winter wind regime, but the ocean still holds plenty of Southern Ocean energy. Expect average wave heights around 1.6-1.7m with periods in the 9-9.4s range. The key is to pick your days when a clean westerly lines up with a solid SE groundswell.

Low Surf Season (November - February)

Summer in Sydney brings lighter, more variable winds and a noticeable drop in consistency. From November through February, the offshore wind windows shrink to just 12-18%, with frequent seabreezes from the NE and E turning the waves bumpy. The swell mix shifts toward shorter-period E and NE windswell, averaging 1.5-1.6m and periods around 8.3-8.8s. While it’s not firing, early mornings can still deliver fun, groveling waves before the onshores kick in. For the best chance of a clean session, target a south swell with a westerly breeze – but be ready for crowded banks.

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Conditions at Maroubra in September

September: Spring Transition

September brings the first hints of spring, and with it a shift in patterns. Offshore wind drops to 34% – still decent, but less consistent than peak winter. The average period falls to 9.0s, and average wave height stays at 1.6m. Swell directions become more variable: SSE (17.5%) and S (16.4%) remain strong, but NE (8.8%) and ENE (9.4%) swells make a notable comeback, reflecting a change in storm tracks. The wind rose shows an increase in N (8.6%) and NNE (8%) directions – these are onshore for Maroubra and can spoil the conditions. However, the westerly quadrant still blows regularly, especially W (9.1%) and NW (6.9%). The key in September is to look for cold fronts that still pack a punch, delivering clean westerly winds and a final blast of S/SE groundswell. The water is starting to warm, and the surf can still be very good on the right days.

Average Spot conditions at Maroubra 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 Maroubra 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 Maroubra for your next trip in September.

Ground swell

Ground swell by size

Wind conditions

Evaluate the wind and swell alignment at Maroubra 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 Maroubra.

Swell with good wind

Swell with good wind by size