Diamond Street Surf Forecast and Surf Report

G’day, I’m Rusty. Let’s have a look at what’s on offer for the next couple of weeks. Honestly, it’s a pretty quiet stretch, and if you’re thinking of paddling out, you’ll need to be patient. There’s a bit of swell early on, but the quality’s marginal at best. After that, it goes flat and stays that way for a long, long run. A big gap with no real recommendations stretches from the end of July right through to the middle of August.

We start off at Diamond Street on Wednesday morning, the 29th of July. Now, don’t get too excited. The water temp here is a very unusual 75°, a full 7° warmer than normal for this time of year. That stands out. You’ve got a 4ft swell from the southwest, with a long period of 16 seconds. That’s groundswell with proper energy—the combined energy is moderate at 945. But the catch is the wind is onshore from the southwest at 6 mph, and the surf report calls it “marginal surf forecast or questionable tide conditions.” It’s not clean, and the shape will be a mess. By Wednesday afternoon, the wind picks up to 9 mph from the west, staying onshore, and the swell drops to 4ft. Still not great.

Thursday morning, 30th July, offers a similar 4ft southwest swell with that long 15-second period, and the wind is light onshore from the west at 6 mph. Again, it’s marginal. Not worth rushing out for. The afternoon nudges up to 4ft from the south-southwest, but the wind’s a bit stronger at 9 mph onshore.

Friday morning, 31st July, things go cross-onshore from the west at 6 mph, and the swell is 4ft from the south-southwest with a 14-second period. The combined energy is still moderate at 688, but the wind’s spoiling it. By the afternoon, it’s only 3ft and rated poor. Don’t bother.

From Saturday, 1st August, onwards, it’s a dud. Swell sizes drop to 2ft, then 2ft, and eventually down to 1ft. The winds are light but often onshore or cross-onshore, and every session from that point is marked as “poor surf conditions.” There are tiny spikes in period—like a 19-second groundswell around 7th August and again on the 10th—but with waves only 1ft to 2ft, there’s just no push. The combined energy falls below 300, weak stuff.

The entire second week is a write-off. No standouts, no windows of clean surf.

So, mate, if you’ve got to get wet, your best—and really only—option is the early morning of Wednesday, 29th July, at Diamond Street. A 4ft southwest groundswell with that very long 16-second period has some grunt, but it’s fighting onshore wind. It’s not going to be pretty. For beginners, it’s small enough, but the onshore wind chops it up. Honestly, unless you’re desperate, save your energy. This stretch looks better for those with a kite than a surfboard.

Rusty.

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