Aoshima Surf Forecast and Surf Report

Alright, Rusty here. Let’s talk about your local surf setup for the next few weeks.

First up, we’ve got a bit of a slow start, but there’s plenty to get excited about if you’re patient. The water’s sitting at a warm 84°, which is pretty much spot on for this time of year, so you won’t need a thick wetsuit.

The first real chance to get wet is Thursday morning, 27 August, at Aoshima. It’s a reef break, exposed to the swell, and it’s fairly consistent. Thursday morning brings a 7ft SSE swell with a short period of 8 seconds. The wind is cross-offshore from the south at 9 mph, which will keep it clean. The combined energy is moderate at 624. It’s not a standout, but it’s a start. The afternoon turns ugly with cross-shore wind and a drop in quality, so get it early.

Friday, 28 August, morning is your next shot. The swell drops to 4ft from the SSE, still short-period at 7 seconds, with light cross-offshore wind from the south at 6 mph. Clean conditions and moderate energy at 288. Again, the afternoon gets messy, so stick to the morning.

Saturday, 29 August, morning is a special little window. It’s glassy—wind is nearly nothing from the SSW at 3 mph. The swell is tiny at 2ft from the east, but the period jumps to 12 seconds, which is a long-period groundswell. That long period means the waves will have better shape and more push, even if they’re small. Energy is weak at 190. It’s surfable, but you’ll need a longboard and some patience. The afternoon gets blown out by a strong cross-shore.

Sunday, 30 August, morning is another glassy one. No wind, dead calm. The swell is a tiny 2ft from the east with a 11-second period, and energy is a weak 105. This is a low-energy day, but the glassy conditions make it possible for a quiet paddle.

Then we hit a dry spell. From Monday, 31 August, through to Thursday, 3 September, the wind is all over the place—onshore, cross-onshore, and strong. The swell gets bigger, up to 8ft, but the wind is trash, and the conditions are rated poor. Don’t bother. The combined energy shoots up to 878-2092, but it’s all messy.

Finally, Friday, 4 September, morning is a standout. The swell is 8ft from the ESE with a 9-second period, and the wind is light cross-offshore from the northwest at 3 mph. Clean conditions. The energy is strong at 1435. This is for experienced surfers only—8ft is big for this break, and the reef will be pushing serious power. If you’re competent, this is your best window in the first week.

Saturday, 5 September, stays big with a 10ft SSE swell, but the wind is onshore and light, making it messy. The energy is strong at 1167. Not great, but if you’re desperate, it’s surfable.

The second week calms down. Sunday, 6 September, through Monday, 7 September, is mostly small and poor. Tuesday, 8 September, morning brings a nice surprise: 5ft from the SSE with an 11-second period, glassy calm wind, and moderate energy at 592. This is a solid, clean day.

But the real standout of the whole 16-day window is Wednesday, 9 September, morning. Glassy conditions, 10ft swell from the SSE with a long 13-second period. The energy is very strong at 2999. This is a big, powerful groundswell with perfect glassy conditions. It’s for experts only—10ft at a reef break with that period is serious. The afternoon stays clean with cross-offshore wind.

Thursday, 10 September, is absolutely massive: 23ft swell from the SE with a 14-second period, and the energy is an enormous 18184. This is way too big for Aoshima, even for experts. The wind is light cross-offshore, so it’ll be clean, but the swell is dangerous. Not one to paddle out.

Friday, 11 September, morning drops back to a manageable 5ft from the SSE with a 9-second period, glassy, and moderate energy at 313. A nice, clean end to the run.

Overall, the best on offer is Friday, 4 September, morning for the experienced crew, and Wednesday, 9 September, morning is the absolute standout for the big-wave specialists. The long-range stuff on the 9th and 10th is promising but less certain—keep an eye on it.

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

Rusty

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