Porsmilin Surf Forecast and Surf Report

Right, let's have a look at what's on the cards for Porsmilin, this sandbar set-up that's fairly exposed to the SW swell window.

Alright, so we're looking at a bit of a slow start here. The first few days are pretty ordinary, with small, weak waves and messy winds. Monday afternoon the 14th has a tiny 3ft west swell, but it's cross-on and the wave energy is low (194), so that's a write-off. Tuesday the 15th is a bit bigger but the wind is howling at 16 mph, so even though it's clean, the surf is just poor. We get a bump in size through Wednesday the 16th, with 7ft to 8ft WNW swell, but that strong cross-off wind keeps things marginal.

Then we hit Thursday the 17th, and it gets worse. An 19 mph cross-on wind blows up a 6ft swell, making for lumpy, poor conditions. Friday the 18th is where it finally gets interesting. A solid 8ft WNW groundswell, with a very long 14-second period, rolls in. The combined energy is a massive 3183, which is strong stuff. The morning has a gentle cross-off breeze, and the file says it's "excellent surf conditions for experienced surfers" – that's our standout. This is a proper, powerful groundswell, and because it's that long period, it might jack up and bowl a bit. Porsmilin is a sandbar, so you'll want to be on your game. For the record, the water temp is 63°F, which is just about average for the time of year.

Saturday the 19th drops off again, with onshore winds ruining the morning and the swell shrinking. Sunday the 20th looks better. A 5ft WNW swell with clean, cross-off winds from the ENE at only 3 mph – that's glassy conditions. The energy is moderate (518), and it's a proper clean morning session.

Monday the 21st is another good call. A 6ft WNW groundswell with a 13-second period, clean cross-off winds from the east at 9 mph, and solid energy (915). The file says "expect very good surf conditions". This is a quality window.

After that, things taper off. Tuesday the 22nd is small and ordinary, and then we have a long stretch of tiny waves and light winds right through to the end of the month. There's a brief flicker on Thursday the 24th afternoon, with a 5ft WNW groundswell, a 12-second period, gentle offshore wind, and good energy (673). That's worth a look if you're desperate, but it's a one-off.

The absolute pick of the fortnight is Friday morning the 18th of September. That 8ft, 14-second groundswell with clean winds is a proper session for experienced surfers only. The crowd factor here is "sometimes", so you might have a few others out, but for a wave of that quality, it's worth the company. After that, the Sunday the 20th and Monday the 21st mornings are your best bets for cleaner, more manageable waves.

Rusty.

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