Big Beach Surf Forecast and Surf Report

Alright, Rusty here. Let’s have a look at what’s cookin’ for the next couple weeks.

Honestly, mate, it’s a bit of a quiet stretch ahead at Big Beach. We’ve got some swell on the way, but the consistency and quality are gonna leave you wanting more. The standout window looks to be around Monday afternoon, the 7th of September, through to Tuesday morning, the 8th, where we see the biggest bump of the period.

Monday morning starts off modest with a 3ft SSW swell, 17-second period – that’s a long-period groundswell, which will bring some grunt but can be a bit tricky at a beach break like this. Still, the wind is a light cross-off from the east, keeping things clean. The combined swell energy is moderate at 1020. By Monday afternoon, that swell jumps to 5ft from the SW, with a 14-second period and the energy ramps up to 1623 – that’s solid, moderate-to-strong energy. Offshore wind from the east-southeast will keep the face tidy. This is likely the best session of the whole run: solid shoulder-high waves, clean, and with that longer period, the paddle out should be manageable.

Tuesday morning sees the biggest swell of the forecast – 8ft from the SW, 11-second period, energy at 1622. But here’s the catch: the wind swings onshore from the south, and it’s gonna be choppy as all heck. That’s expert territory only; too big and messy for most. Tuesday afternoon drops back down to 3ft, but still with cross-onshore wind, so it’s not great.

From Wednesday the 9th onward, the swell fades fast. We’re looking at wave heights between 3ft and 0.7ft for the rest of the run, with energy readings dropping from 401 down to just 91 by Sunday the 13th. The wind is mostly cross-off or offshore, so it’ll be clean, but the waves are tiny – barely knee-high most days. The period stays long through to the 10th and 11th (16-18 seconds), so you might get a rare, clean little waist-high roller, but it’ll be inconsistent.

There’s a slight tick-up around Monday the 14th – the morning is glassy, but the swell is only 0.7ft with a very long 23-second period. That’s more of a lake than the ocean. The afternoon improves a bit to 2ft from the SW, 22-second period, with light offshore wind, and the energy hits 307. That’s a small, clean, long-period groundswell – fun for a longboard on the right tide, but nothing to get excited about.

The last real chance for anything rideable comes around the 16th to 20th of September, with small waves in the 2ft to 3ft range, periods between 14 and 18 seconds, and light to gentle cross-off breezes. The energy stays between 290 and 620 – that’s weak to moderate. Clean, but small.

Crowds at Big Beach are sometimes an issue, so on those rare clean days with a pulse, expect company. The water temperature is about average for this time of year.

So, the takeaway: Monday afternoon, 7th September, is your best bet – 5ft SW groundswell, clean with cross-off wind, moderate energy. It’s the only real standout. Tuesday morning is too big and messy for most. After that, it’s a long stretch of clean but tiny waves, ideal for a log or a paddle, but not for any real juice. Forecasts can change, so keep an eye on it.

Rusty.

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