Kugenuma Rivermouth Surf Forecast and Surf Report

Alright, Rusty here again. Let’s break down what’s coming for Kugenuma Rivermouth in feet and miles per hour. Gotta be honest, it’s a slow start with a long stretch of nothing before we get any action.

The first week is a total dud. From Sunday, July 26th through to Monday, August 3rd, it’s just poor surf. Tiny waves, all under 2 ft, with winds mostly onshore or cross-shore, making it a mess. The combined wave energy is weak, barely hitting 48 (weak energy). Not worth getting wet.

Things finally wake up on Monday, August 3rd. The morning has some waist-high 2 ft swell from the ESE, but it’s still ordinary. The real spark comes Monday afternoon when the swell jumps to 3 ft from the SE with a long 16-second period, pushing combined energy to 339 (moderate). The wind is cross-shore, so it’s a bit lumpy, but you can feel the potential.

Now, the standout windows are August 4th through the 8th. Tuesday the 4th is where it gets good. Morning sees 3 ft from the SE with a 16-second period, clean cross-offshore wind from the ENE, and combined energy of 516 (moderate). The afternoon is the real gem – glassy conditions, 4 ft SE swell, 16-second period, and 603 combined energy. That’s clean, proper wave energy. This is the best on offer early on.

Wednesday the 5th is mixed. Morning brings 5 ft SE swell at 17 seconds, with 1098 combined energy (strong), and light cross-offshore wind. That’s excellent for experienced surfers. But the afternoon onshore wind from the S ruins it. Thursday the 6th and Friday the 7th see the swell building – 6 ft and 7 ft respectively, both from the SE, with long 16-17 second periods. The combined energy is huge – 1548 and 2550 (strong). Morning sessions are clean with cross-offshore wind, but afternoons get blown out. These waves are over 5 ft, so it’s too big for beginners, and by Friday it’s over 8 ft, strictly for experts. The long period (over 15 seconds) means these SE groundswells will shape up better at the rivermouth, but can be a bit straight at a beach break.

Saturday the 8th of August is the absolute standout. Morning delivers 8 ft of SE swell, 17-second period, combined energy of 3443 (very strong), and clean cross-offshore ENE wind at just 6 mph. This is the peak – powerful, clean, and for experienced surfers only. The afternoon gets onshore.

After that, it drops off quick. Sunday the 9th has 4 ft but it’s messy, and by Monday the 10th we’re back to tiny 0.7 ft slop. The second week fades out, so make the most of that window from the 4th to the 8th.

The water temperature is about average for this time of year, nothing unusual.

The rivermouth can get crowded, and with “often” listed for crowds, expect plenty of company when it’s good, especially on those standout days.

Signing off – Rusty.

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