Margaret River Mouth Surf Forecast and Surf Report

G’day, Rusty here. Let’s have a look at what’s on the cards for the next couple of weeks.

We’re starting off with a slow patch, but there’s some proper juice building later on. The river mouth at Margaret River is a sheltered spot, so it doesn’t need a huge ocean to work, but it does need the right conditions. Right now, the water’s a touch warmer than normal for this time of year, sitting at 67°F.

Thursday morning, the 23rd, we’ve got a clean 5ft SW swell rolling in with a nice 14-second period. The wind is a gentle cross-off from the NE at 9 mph, so the surface should be tidy. The combined energy is moderate at 738. It’s a beginner-friendly wave, but the conditions are marginal due to tide, so keep your expectations in check. Thursday afternoon sees the swell drop a bit to 4ft, and the wind swings to a light cross-on, making it a bit bumpy.

Friday the 24th is a write-off in the morning with 3ft and poor conditions, and the afternoon is only surfable but very ordinary. Saturday the 25th is worse with cross-shore winds and chop, and Sunday the 26th starts with a fresh cross-onshore breeze that’s messy. Sunday afternoon, though, we get a pulse of 7ft SW swell, but it’s short period at 9 seconds and the wind is cross-off from the SE. The energy jumps to 900 – moderate. It’s still marginal, but it’s the first hint of something bigger.

Now, Monday the 27th is where it gets interesting. We’ve got a solid 8ft SW swell with a 13-second period, and the wind is a clean cross-off from the SSE at 12 mph. The combined energy is strong at 2036. The waves are still in the marginal zone, but that’s a powerful groundswell building. For a river mouth, that long period stuff can line up nicely. This is a standout for the more experienced crew – 8ft is pushing it for beginners. Tuesday the 28th brings a 5ft SW swell with offshore ENE wind at 9 mph, and the conditions are described as good. The energy is 922. That’s a clean, fun size for a wider range of surfers.

The rest of the first week and into the second week is a mixed bag. Wednesday the 29th drops to 4ft with a very long 17-second period, but it’s cross-off, so it’s clean but small. Thursday the 30th shows a 6ft SW swell with a 17-second period, and the energy is 1722, but the wind is cross-shore, creating a bit of chop. Friday the 31st has a 8ft SW swell, 16-second period, and a strong energy of 2790, but again, cross-shore winds. The Saturday morning of the 1st of August is a real highlight: 6ft SW swell, 15-second period, and a light cross-off breeze from the SSE at 6 mph. The energy is 1229, and the conditions are described as very good. That’s clean, lined-up, and manageable for most.

The 6th of August, Thursday, brings a big 8ft SW swell with a very long 19-second period in the afternoon. Energy is massive at 4986. The wind is a light cross-shore, so it’s clean but big. That’s for experts only. The 7th of August, Friday, holds similar size and energy, but the wind is cross-on, so it’ll be lumpy on the take-off.

Overall, the best windows are Monday the 27th for the bigger swell with clean wind, and Saturday the 1st of August for a clean, solid swell that’s more user-friendly. The 6th and 7th of August have the biggest energy, but the wind isn’t perfect, and the size is serious. Keep an eye on the forecasts, because this long-range stuff can shift.

Rusty.

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