Porsmilin Surf Forecast and Surf Report

Alright, folks, Rusty here. Let’s break it down.

We’ve got a solid window of surf coming up here at Porsmilin, but it’s a bit of a slow cooker. The first couple of days are a write-off—Thursday afternoon through Friday morning are just messy with cross-onshore winds and choppy, poor surf. Nothing to get excited about. The water temp is sitting at about 63°, which is pretty much bang on average for this time of year, so no worries there.

The real action kicks off on Friday afternoon, 4 September. The wind swings to a cross-off from the NW at 9 mph, and we start seeing some clean lines. Swell bumps up to 6 ft from the WNW, with moderate energy pushing through (485). It’s a solid start, but it’s Saturday morning, 5 September, that’s the standout. We’re looking at 7 ft of WNW swell, a 12-second period—that’s proper groundswell—and the combined energy is pumping at 1248. Winds are light from the east at 3 mph, basically glassy. This is the best on offer. Clean, powerful, and long-period. That long period means it’ll be a bit straighter at the sandbar, but the quality is undeniable. Saturday afternoon holds at 6 ft with the same period, but the wind picks up a little from the north.

Sunday, 6 September, drops off fast. Swell drops to 3 ft and conditions turn poor. Then Monday morning, 7 September, brings another pulse: 7 ft from the west at 13 seconds, combined energy of 1592. That’s a big swell—strong energy, and with cross-off NW winds at 16 mph, it’ll be clean but powerful. That’s solidly in the expert-only zone. Tuesday, 8 September, still has some decent leftover swell at 6 ft to 6 ft, but the magic is fading.

There’s a bit of a lull from Wednesday, 9 September, through to the end of the second week. The wind turns onshore or cross, and the swell gets smaller and choppy. Not much to write home about. Then, around Monday, 14 September, we see a comeback. The wind goes offshore from the north at 6–12 mph, and we get 5 ft to 4 ft of clean, cross-off or offshore waves. Tuesday, 15 September, and Wednesday, 16 September, keep that trend going with light winds and clean 4 ft to 5 ft waves. Not huge, but clean and fun. The energy is moderate (around 300–400), so it’s more about consistency and shape.

After that, it fizzles out again. The last few days of the forecast are poor with rising winds and small, messy swell.

So, the standout is Saturday morning, 5 September. Get on it. That 7 ft, 12-second WNW groundswell with light easterly winds is the session to aim for. Monday the 7th is for the brave—big and clean, but only for the experienced. The second week offers a more mellow, clean option around the 14th to 16th, but it’s not a barnburner.

This is Porsmilin, a sandbar setup, fairly consistent. Crowds are sometimes a thing here, so on that Saturday, expect some company. The water’s average temp, no anomaly to speak of. Just good, honest surf.

Rusty.

Read more