Porsmilin Surf Forecast and Surf Report

Alright mate, it’s been a bit flat and wonky here for a while near the start of the window, but there’s some proper swell on the way. The first real standout arrives on Saturday, the 5th of September, and there’s a very interesting run around the second weekend, especially the 14th.

The water temp at Porsmilin is sitting around 63°, right on the money for this time of year. Not freezing, not warm, just what you’d expect for late summer.

Now, through the first week the winds have been messy or cross-shore, nothing clean enough to make the most of the little bumps running through. There are a few slight improvements—like Friday afternoon the 4th—but it’s still weak and cross-shore, not worth getting wet for. The period is short, below 8 seconds on some days, making it even less appealing.

Then, Saturday the 5th of September morning is your first proper call. Swell hits around 6 ft out of the WNW, period stretching out to 13 seconds, giving a nice groundswell feel. Combined energy is strong, sitting at 1159. The wind is light at 10 km/h from the ENE, cross-offshore, so expect clean walls. This is the kind of session you paddle out early for. The break is a sandbar setup, reasonably consistent, sometimes crowded—so if you’re keen, better get in before the pack. The swell direction matches the optimum SW, so the bank will line up. Saturday afternoon stays clean as the wind switches NNW, still cross-offshore. Swell drops a touch to 6 ft, period 12 seconds, energy still strong at 896.

After that, the surf gets inconsistent and sloppy again until Thursday the 10th of September, in the afternoon. Solid 7 ft swell from the W, 9-second period, moderate energy (697) and the wind turns WNW cross-offshore. That’s clean and punchy, solid intermediate conditions. A notch above that is Friday morning, the 11th of September. You’ve got clean 6 ft WNW groundswell, 9-second period, with a NE offshore breeze at 15 km/h. That’s delicious for a sandbar. Combined energy sits at 488.

Then comes the real heavy hitter: Monday morning, the 14th of September. The swell pumps up to 7 ft out of the W, period 8 seconds, but the wind is non-existent with glassy conditions. Energy is very strong at 729. That is a classic morning session—clean, no wind, and solid. That same afternoon the swell builds to 8 ft from the WNW with 10-second period. Light cross-onshore creates small ripples, but the power (1302) is through the roof. This is more for experienced surfers, as over 8 ft at a beach break can push you around.

Tuesday the 15th of September stays chunky: 8 ft WNW at 11 seconds in the morning, and 8 ft in the afternoon, both with light winds. Combined energy hits 1554 in the morning—that’s serious grunt. That long-period groundswell (over 11 seconds) will hold its shape well on a sandbar, but be ready for lulls between sets. Not one for beginners at this size.

Overall, the best on offer is the morning of the 5th of September and Monday the 14th of September. The 5th is cleaner and more user-friendly, the 14th has more raw power.

Rusty

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