Kugenuma Rivermouth Surf Forecast and Surf Report

Alright, let's walk through the dates. The forecast starts off flat and stays flat for days.

On Tuesday, July 14th and Wednesday, July 15th, we've got tiny swell, maybe 0.4m to 0.5m, but it's coming in from the SSW with onshore or cross-onshore winds. Surf is poor. Not a single wave worth fighting for.

Thursday, July 16th morning offers a moment of tease. The wind goes glassy, completely off, but the swell is a pathetic 0.7m with a short period of only 5 seconds. That's just wind slop. It looks smooth on the surface, but there's no power behind it. Still poor surf.

The rest of that week and into the next, from Friday, July 17th through Tuesday, July 22nd, the swell drops even lower, down to 0.1m or 0.2m most days. The wind keeps switching around, mostly onshore or cross-onshore, with a few clean moments that get ruined by a total lack of waves. The energy readings are tiny, mostly between 8 and 51 (weak). It’s just a flat spell.

We get a little bump on Thursday, July 23rd afternoon. The swell direction is from the SSE with a period of 10 seconds, but the height is only 0.2m. That's a waist-high wave if you're a duck. Not happening.

Then, on Thursday, July 24th, we see the one true standout. The afternoon swell bumps up to 1.3m from the SSW, with the combined energy hitting 109 (moderate). That’s the biggest swell of the whole forecast. But here’s the kicker – the period is only 5 seconds. That’s short-period, junky wind swell, and the wind is onshore at 20 km/h. The break is a river mouth, and with that short period and onshore wind, it’s going to be a mess. Poor surf conditions. Honestly, with that amount of wind and choppy water, this setup looks more interesting for kite surfing than paddle surfing. It’s not beginner-friendly, but not powerful enough for experts.

Friday, July 25th and Saturday, July 26th are more of the same – onshore wind, small swell, poor quality. The energy flirts with 90 but the wind is blowing 30 km/h on Saturday, making it completely blown out.

The very last chance is Wednesday, July 29th. The morning brings a clean, glassy window with 0.4m of swell from the SE at a period of 13 seconds. That’s a proper groundswell period, which can offer long waits between sets but good shape – a river mouth can handle that. The energy is 70 (weak), and the rating is a “1”, meaning surfable but very ordinary. And it’s a Wednesday, so crowds might be manageable if you’re desperate for a paddle.

After that, the afternoon gets choppy again.

So look, to wrap it up: the one shot for the tiniest bit of surf is Thursday, July 24th if you want to deal with onshore junk, or Wednesday, July 29th morning if you want clean but tiny waves. Otherwise, save your wax.

Stay patient.

Rusty.

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