Porsmilin Surf Forecast and Surf Report

Alright, Rusty here, lookin’ at the charts for Porsmilin. It’s a bit of a mixed bag, gotta be honest. We’ve got some serious muscle showing up down the line, but the first week or so is gonna test your patience. Water temp's sittin' at 64°, which is pretty much what you’d expect for this time of year, nothin' wild there.

Right from the get-go, Wednesday the 19th of August, it’s not on. We got a weak 2ft swell from the west with a short, choppy 6-second period, and a strong cross-offshore wind. The combined energy is only 307, so it’s weak and messy. This carries on through the rest of the week. Thursday the 20th sees the swell bump up to 8ft from the WNW with a 9-second period, but it’s all cross-shore wind with a chop. The energy gets up to 1585, but the quality is just not there. Friday and Saturday are small and weak, or blown out. Honestly, from Wednesday through to Tuesday the 25th, it’s a write-off. There’s a solid gap of days where you’re better off doing something else.

We start to see a little life on Wednesday the 26th of August morning. Swell bumps back to 5ft from the southwest, period is still short at 8 seconds, but the wind goes cross-offshore at 12 mph, cleaning things up. The energy is moderate at 488. It’s still marginal, but it’s a step in the right direction.

Thursday the 27th gets ugly again. We’re lookin’ at a big 10ft swell from the west with an 11-second period, but it’s cross-onshore wind and a risk of thunderstorms. The energy is massive at 3672, but for Porsmilin, with that wind, it’s just a washing machine. Not the one.

Now, here’s where things get interesting. Sunday the 30th of August is the first real highlight. Morning session shows a 7ft swell from the west, 8-second period, but crucially, the wind is cross-offshore from the NW at 12 mph. It’s clean! Energy is strong at 1368. Sunday afternoon it actually gets bigger, 10ft from WNW with a much longer 13-second period, and the wind stays clean. Energy jumps to 3001. That’s proper groundswell energy, which means better shaped waves but longer waits between sets. For a sandbar setup like Porsmilin, that longer period can make ‘em a bit straight, but it’s the best we’ve seen.

But the standout? The absolute gem in this forecast is Monday the 31st of August. Morning brings a solid 15ft swell from the WNW with a long 12-second period, and a clean cross-offshore breeze at 16 mph from the northwest. Combined energy is a thumping 5153. This is massive, powerful surf. The call says it’s wind and tide favorable, but the swell is predicted to be too big for this break. For most of us, 15ft is expert territory only. This is a big, heavy, dangerous day for the experienced crew only. If you’re not solid at Porsmilin, give this one a wide berth. Tuesday the 1st of September is similar, with a 13ft swell, but the wind goes cross-onshore in the arvo, so morning is the only window.

After that, it all falls apart. Strong onshore winds and messy conditions from the 2nd of September onward close it out.

So, to sum it up: the first week is a bust. Your true standout is Monday the 31st of August, but it’s a big-wave day for experts only. If you’re looking for something a bit more manageable but still clean, aim for Sunday the 30th of August.

Rusty.

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