Shichirigahama Surf Forecast and Surf Report

Alright folks, Rusty here. Let’s cut straight to it. We’re looking at Shichigahama, the river mouth, and honestly, the next week and a half is a bit of a bust for solid surfing. There’s a long dry spell before anything gets interesting.

The whole first week, from Saturday the 18th through to Sunday the 26th, is basically a write-off. The swell is tiny—anywhere from 0.3ft to 3ft—with periods all over the place, mostly short and weak. Combined energy is pathetic, reading between 9 and 66 (weak energy). Winds are mostly onshore or cross-onshore, keeping the surface messy. There’s a brief moment on Wednesday the 22nd morning with glassy conditions, but there’s no swell to ride. Just a flat, clean lake out there.

Then we hit Monday the 27th of July. Things start looking up. A new SSE groundswell pushes through, with a 4ft swell at 16 seconds on Monday morning. Energy jumps to 880 (moderate). That’s not huge, but the long period means shape and power, especially for a river mouth like this. Conditions are clean with a light SSW breeze on it. The water temp is a warm 78°, about average for this time of year. Keep in mind, Shichigahama can be inconsistent—it doesn’t always fire—and it *can* get crowded sometimes. But for that Monday morning, it’s your best bet. By the afternoon, the wind picks up onshore and kills it.

Tuesday the 28th has a bigger 8ft morning swell from the SSE at 14 seconds, and the energy is strong (2046). That’s solid, but remember: anything over 8ft is expert territory. This is borderline. The wind might still be light, but it’s onshore. Not perfect.

The standout is likely Wednesday the 29th. Swell hits 10ft from the S with a 16-second period, and energy is very strong (4371). The wind is light cross-onshore in the morning, so it should be rideable for experienced surfers. That’s the biggest solid window of the whole forecast, and it’s got the period to match. At those heights, it’s strictly for the crew that knows what they’re doing.

After that, Thursday the 30th and Friday the 31st keep big swell (10ft–12ft), but winds get messy, cross-onshore or strong onshore, with thunderstorms possible. By the first of August, a strong breeze and near-gale winds blow it all to shit. For kite surfers, that Saturday the 1st might look interesting with 28–31 mph cross-onshore winds and 5ft swell, but for paddle surfing? Forget it.

So here’s the takeaway: the first 9 days are a total dud. The real window is Monday 27th to Wednesday 29th. Wednesday morning 29th is your best shot—big S groundswell, long period, light winds, and a river mouth that can handle it. Don’t sleep on it, but don’t take a beginner.

Rusty.

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