Black Rocks Jetty Surf Forecast and Surf Report

G’day, Rusty here, and I’ve got a look at what’s comin’ for Black Rocks Jetty. This is a reef break that’s exposed to the SW and it’s very consistent – it don’t take much to get it goin’. The water’s sittin’ at about 76°, which is a touch warmer than normal for this time of year, so you might get away with a thinner wetsuit.

We’ve got a bit of a slow start on Friday the 4th. Friday morning you’ll see small 2ft SW swell rolling in with a solid 19-second period – that’s proper groundswell energy but it’s just not got enough push behind it. The wind’s light offshore WSW, but the score’s low. It’s a bit of a wait. Friday afternoon picks up a fraction to 5ft SW, but the wind goes cross-shore and it’s still marginal.

Saturday the 5th, the morning’s 5ft SW with a cross breeze, still a bit average. But then Saturday afternoon, the wind goes glassy with N wind, and the swell holds at 5ft SW – that’s the first real sign of life. Clean, smooth, and the period’s 14 seconds. Sunday the 6th is glassy all day, with 4ft SW in the morning and 3ft SSW in the arvo, both with long periods. Nice clean little waves for the longboard or a mid-length.

Now, Monday the 7th gets a punchy 7ft SSW in the morning, but the wind picks up from the south at 15 km/h, cross-on, and it gets choppy. By Monday afternoon, it’s 8ft SSW with 20 km/h SSE wind – that’s messy and not worth paddlin’ out. Tuesday the 8th brings a 8ft SSW swell with a 16-second period and a moderate energy reading of 3993. The wind is cross-shore gentle, so it’s still a bit lumpy. But Tuesday afternoon, the swell jumps to 10ft SSW with only 5 km/h wind – that’s a solid, powerful groundswell with clean conditions. The energy is pumpin’ at 7789. This is expert territory, no doubt.

Wednesday the 9th is the standout. The morning serves up 12ft SSW with a 17-second period and energy at 7978. The wind is light cross-shore, but it’s the afternoon that’s the absolute gem: 12ft SSW, 17-second period, glassy conditions. The energy is 6300. This is exceptional surf for expert surfers only – big, clean, powerful lines on the reef. If you’ve got the skill and the nerve, this is the session to aim for.

Thursday the 10th drops to 6ft SW in the morning with glassy conditions, still good for experienced surfers. The afternoon gets a bit weird with a 7ft SSE pulse and onshore wind, so it’s messy. Friday the 11th is small – 4ft S – but the afternoon turns glassy again, so there’s a few clean little ones. Saturday the 12th has 5ft SSW with glassy morning and a clean cross-off arvo. Sunday the 13th, the morning is 4ft SW with a cross breeze, but the afternoon is 4ft SW with glassy conditions and a 16-second period – clean and fun.

Monday the 14th is a beauty: 5ft SW with 18-second period, zero wind – glassy as a mirror. The energy is 2121. This is excellent for experienced surfers. Tuesday the 15th stays solid: 6ft SSW in the morning under glass, 6ft SW in the arvo with calm wind. Wednesday the 16th is smaller, 5ft SSW, but still glassy all day.

Now, hold onto your board. Thursday the 17th of September is another big one. Morning: 12ft SSW with a 15-second period, glassy, and energy at 6044. The afternoon is the same size, 12ft SSW, with zero wind – glassy perfection and energy at 5445. This is exceptional for experts only. Friday the 18th brings 8ft SSW with 10 km/h NE offshore wind in the morning – clean and powerful. The afternoon drops to 8ft SSW with glassy conditions. Saturday the 19th is small again, 4ft SSW, glassy morning, but the afternoon brings rain showers and a cross-on breeze that messes up the 3ft SW swell.

The true standouts here are Wednesday the 9th afternoon and Thursday the 17th – both deliver big, clean, glassy groundswell with massive energy. If you’re an expert, those are the days to circle.

Rusty.

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