Sakawa River Surf Forecast and Surf Report

Alright, Rusty here. Let’s be straight about the Sakawa River – it’s a rough outlook for the next couple of weeks.

For the first week, from now through July 26th, it’s basically a bust. We’re looking at tiny, weak swells, mostly under 2ft, with mediocre cross-onshore winds. The energy is pathetic, barely cracking 80 (combined energy of all swells directed here). There are a few glassy moments early on July 20th and 21st, but the swell is so small – 1ft – it’s barely a ripple. You’d be better off swimming. The water temp is sitting at 78°, which is about average for this time of year, so that’s not the issue.

The first faint glimmer of hope comes on Sunday, July 26th. The morning shows a slight uptick, with 2ft from the SE and a light cross-offshore breeze from the NNE. That's actually clean. The energy is still low (95), but for a river break, it’s surfable in a very ordinary way. It’s not going to be a standout, but it’s the first thing worth paddling for.

Then, a real shift. From Monday, July 27th, we see a major pulse of south swell. The morning of the 27th brings 3ft from the S with a period of 16 seconds – that’s long-period groundswell, and the energy jumps to 595. By the afternoon, it’s 6ft, and by Tuesday, July 28th, it’s up to 10ft, with a 13-second period. The energy is screaming (3471). The wind is light and cross-shore, which is clean. This is the window.

However, there’s a big caveat. By Tuesday afternoon, July 28th, the swell hits 12ft and the period stretches to 17 seconds. That’s an absolute monster. That’s over 8ft, so it’s expert territory only. The problem is that the wind is also forecast to be cross-onshore, and the swell is just too big for this river break. The forecast says it's too big for this spot. It’s the same story on Wednesday, July 29th: 23ft swell with 17-second period. That’s not just big, that’s dangerous and onshore. That’s more of a kiteboarding setup than a paddle session.

The swell drops back to 8ft on Thursday, July 30th, and the energy is 1175. The wind is cross-shore, making it the best-looking day of the whole run. The swell is from the S at 8ft, which is a solid, heavy wave for intermediate to advanced surfers. The long period (10 seconds) will give it shape, but it might be a bit straight for a beach setup. It’s the best on offer, but it’s still a marginal call.

After that, it fades. Friday, July 31st, is 6ft but with a messy onshore breeze, and by the start of August, it’s back to small, weak, and choppy.

The standout: Without a doubt, Thursday, July 30th is the pick. The 8ft south swell (10-second period) with light cross-shore wind gives the best chance of a clean, powerful wave. It’s not perfect, but it’s the only time the size, wind, and energy all line up for a proper session. The crowd situation at Sakawa River is a worry – it can get crowded, so be ready for that.

The promise: Monday, July 27th morning is a worthy mention. The 3ft swell with 16-second period is tiny, but that long-period groundswell will give it great shape, and the light wind makes it the most user-friendly option for the whole period. A good one for a longboard.

Overall, the first week is a flat dud, the second week has a massive, dangerous spike, and then a window around the 30th. It’s a long-range call, so keep an eye on it. Forecasts can change.

Rusty.

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