Dongara-Port Denison Surf Forecast and Surf Report

G’day, I’m Rusty, and I’ve been staring at the charts for Dongara-Port Denison. The next 16 days have a bit of a story to tell — a slow start, then a massive pulse of swell right at the end that’s going to get the heart pumping. Let’s get into it.

The water temperature here is reading 67°, which is about 0.9° cooler than normal for this time of year — nothing wild, just a touch of autumn left in the water. The first few days are a bit of a tease. We’ve got a solid groundswell rolling in right from the get-go. Tuesday afternoon (8th September) sees a 10ft swell from the SW with a very long period of 17 seconds, packing a strong energy punch (4533). But the wind is a fresh ESE breeze at 22 mph, blowing cross-off, so it’s clean but that wind strength is going to make it feel like a battle. The forecast calls it marginal, and for a reef break like this, that long period will draw nice lines, but the size is already over 8ft — this is for experienced surfers only.

Wednesday morning (9th) drops a bit to 8ft, still a very long 16-second period, with a clean offshore E wind at 19 mph. The energy is still strong (2721). It’s a proper wall of water, but again, it’s big. The afternoon holds similar. Thursday morning (10th) is still solid at 5ft with a 15-second period and a clean offshore breeze, but the real standout on Thursday is the afternoon: 5ft, 15-second period, and a gentle offshore E wind at 9 mph. The energy is moderate (1137), and the conditions are described as excellent for experienced surfers. This is the best window in the first week — clean, manageable size, and that long period will make the reef at Dongara-Port Denison (Dongara-Port-Denison) really sing. Crowds are possible here, so if you’ve got a window, Thursday afternoon is the one to chase.

Friday (11th) goes downhill with a cross-on wind and a building swell, and the weekend is a write-off with onshore and cross-shore winds, making things lumpy and messy. The swell stays in the 6ft to 8ft range through Monday (14th), but the wind is all over the shop. Monday morning has a brief window of clean, cross-off wind from the SE, but the wind picks up to a fresh 19 mph in the afternoon, turning it into a choppy mess.

The gap from Friday the 11th all the way through to the end of the second week is mostly marginal or poor. There’s a small, clean-ish window on Wednesday morning (16th) with 6ft and a light onshore, but the energy is solid (1607) — still, it’s not the standout.

Then we hit the big one. Sunday the 20th of September, the ocean wakes up. The morning shows a massive 15ft SW swell with a very long 18-second period, and the energy is through the roof (12723). The wind is cross-off from the SSE at 16 mph, keeping it clean. This is a serious, serious groundswell — only for the best of the best. The afternoon stays huge but the wind goes cross-shore, making it lumpy. But Monday the 21st — that’s the true standout of the entire forecast. The morning has 15ft of SW groundswell, still 18 seconds, with a clean offshore E wind at 12 mph. The energy is massive (12496). The forecast calls it exceptional for expert surfers, and I’m not exaggerating. This is a monster swell, perfectly aligned for the reef, with offshore winds. If you’re an expert, you mark that morning. The afternoon drops a touch but stays big at 13ft. The rest of that week tapers down, but it stays solid through to the 23rd, though the winds get more cross-on, so the magic fades.

So, to sum it up: the first week’s best is Thursday afternoon (10th September) — clean, 5ft, long period, and a gentle offshore. The second week is all about Monday morning (21st September) — 15ft, 18 seconds, offshore wind, and energy that will shake your bones. That’s the one. Everything else is either too windy, too messy, or too big for the average punter.

Stay safe, read the sets, and I’ll see you in the water.

Rusty

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