Rock Island Surf Forecast and Surf Report

Alright folks, Rusty here. Let’s get into it.

We’re looking at a pretty quiet start for Rock Island (reef). The first handful of days are basically a write-off. From Monday the 31st of August right through the first week of September, we’ve got tiny little 1 ft to 2 ft slop with weak energy and onshore winds, so don’t bother paddling out. There’s a bit of a gap there with nothing worth mentioning.

The first real flicker of hope shows up on Monday the 7th of September. Morning starts with 2 ft swell and a gentle offshore breeze, but the energy is still weak. By Monday afternoon, things get a bit more interesting – 2 ft from the south with a 12-second period, clean winds, and moderate energy. It’s still small, but the conditions are getting better. Tuesday the 8th kicks off with a moderate offshore breeze and 2 ft south swell, but it’s not until Wednesday the 9th that we start seeing some size. Wednesday morning has 4 ft from the SSE with a fresh offshore breeze and energy climbing. The afternoon bumps to 4 ft, 12 seconds – still a bit marginal, but the wind is clean.

Thursday the 10th of September has the best surf of the first half. Morning brings 5 ft swell from the SSE, 13-second period, and solid energy. That’s a decent push for the reef, and with a fresh offshore wind, it’s clean. But note – 5 ft is getting into intermediate territory, and the afternoon looks messy with choppy cross-shore wind.

Then it gets ugly. Friday the 11th and Saturday the 12th are blown out with near gale-force winds and big, messy swell (up to 8 ft on Saturday morning). That’s expert-only if you’re even considering it, but honestly, the wind will ruin it. Sunday the 13th drops back to 3 ft but with a very long 15-second period – that’s a groundswell, but it’s onshore, so don’t get excited.

The standout? It’s Tuesday the 15th of September. That morning delivers 13 ft of SSE swell, 13-second period, and a massive energy reading. That’s a proper big swell. The wind is moderate offshore and clean. For expert surfers only – this is serious, powerful, and consistent. The reef will handle it well, but you’ll want to be confident. The 15-second period in the groundswell earlier (Sunday) was too long and onshore, but this one has the right combo of size and direction. Mark it in your calendar.

Water temperature is about average for the time of year, nothing unusual. Overall, a long slow start, then a solid finish for the brave.

Rusty

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