Sakawa River Surf Forecast and Surf Report

Alright, let’s run through it. The main energy is coming from a long-period SSW groundswell with a solid 16-second pulse, but the wind is going to be the main issue most days. The clear standout is Sunday morning July 12th—glass calm, 5ft with that 16-second period—that’s as clean as it gets at Sakawa River. Water temp is 75°, a bit below the usual for this time of year, so you might want a thin wetsuit.

The forecast starts on Saturday July 11th. Morning shows 7ft of SSW swell at 16 seconds, combined energy of 2142 (strong, you can feel that power), but wind is cross-onshore making it bumpy. Afternoon gets worse with stronger cross-onshore chop. Skip it.

Now Sunday July 12th. Morning is the highlight: glassy conditions, offshore from the WSW at only 3 mph. That 5ft SSW groundswell wraps in with 16-second intervals and moderate energy of 1141. This is the pick—clean waves, no wind chop, and the river mouth will shape those long-period lines nicely. Afternoon gets messy with cross-shore wind.

Monday July 13th has dropped to 3ft and glassy in the morning, but period is 12 seconds now. Energy is weak (290). Small and clean but nothing special.

From Tuesday July 14th all the way through Tuesday July 21st, it’s a long stretch of tiny surf—1ft to 3ft—with mostly cross-onshore winds or onshore. Combined energy stays below 100 most days. Poor conditions, not worth getting wet.

Then Wednesday July 22nd shows a new bump: 4ft in the morning from the ESE with a 13-second period and energy of 643 (moderate). But wind is onshore from the SSE at 6 mph, so it’s blown out. Afternoon is cross-onshore and still messy.

Thursday July 23rd drops again to 3ft with 10-second period, weak energy, and onshore wind. Nothing happening.

Friday July 24th has 2ft and glassy in the morning, but it’s tiny. Just knee-high slop.

But then Saturday July 25th morning brings a clean window: glassy winds from the ESE, 3ft SE swell with 11-second period, and energy of 311. It’s not big, but it’s clean and surfable—a nice little morning session.

Sunday July 26th morning sees a bigger bump: 5ft SE swell with 15-second period and strong energy of 1314. Wind is cross-onshore though, so it’s a bit lumpy. That’s expert territory at 5ft plus the long period makes it better for the river mouth setup here. Afternoon gets even bigger at 7ft but wind is still cross-onshore, so it’s heavy and rough.

So overall: Sunday July 12th morning is your best shot—clean, glassy, and solid long-period swell. The rest of the 16 days is mostly flat or wind-affected, with a few small glassy windows on the 25th. Nothing else really stands out.

Rusty

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