Onjuku Surf Forecast and Surf Report

Alright folks, Rusty here.

First up, we’ve got a bit of a slow start on the cards for Onjuku. Thursday the 30th is pretty much a write-off with tiny 1ft SSE swell and a cross-on wind messing things up – not worth paddling out for. Things look a little better Friday the 31st morning with a bump up to 3ft from the SSW, cleaner, but still nothing special. Saturday the 1st offers glassy conditions in the morning on a tiny 1ft SE groundswell (11 seconds), so it’ll be clean but small, maybe a fun longboard session if you’re keen. Then we hit a stretch of pretty poor conditions until the real action shows up.

The standout window kicks off on Sunday the 2nd of August. The morning is where it’s at: a solid 4ft SE groundswell with a very long 16-second period rolling in. The combined energy is strong (702), and with a clean cross-off wind from the ENE, it’s going to be well-shaped and glassy. This is the best of the first week by a long shot – a classic peaky point-break style wave at Onjuku.

From Monday the 3rd through to Wednesday the 5th, the swell jumps up significantly. We’re talking 8ft to a massive 15ft from the SE and SSE with those long 16-18 second periods. The combined energy rockets into the thousands (up to 9821), which is serious power. The winds stay cross-off and clean, so the waves will look incredible. However, once the swell hits 8ft and especially 10ft and beyond, this is strictly for experts only. Beginners should sit this one out. The swell is huge and the tide is a factor, so only paddling out if you really know what you’re doing.

Water temp is sitting at a very warm 80°F, which is about average for this time of year, so a springie and boardshorts will do ya fine.

After that pulse fades, we get into a long run of so-so days. From the 7th of August all the way through until the 14th, the surf is mostly in the 4ft to 8ft range with E and ESE swell. Winds are mostly cross-off from the NE and ENE, keeping it clean, but the wave quality is described as marginal. There’s a brief blip on Saturday the 8th morning with 4ft S swell going glassy, which could be a fun little session, but nothing to get too excited about. The rest of the second week is a long stretch of clean but ordinary conditions – not a stand-out, but if you’re desperate for a paddle, there’ll be something to ride. Crowds are listed as "sometimes" at Onjuku, so on those cleaner days, expect a few locals out.

Overall, if you can only pick one window, go for the morning of Sunday the 2nd of August. That’s the one with the best combo of size, shape, and clean conditions. The big stuff from Monday to Wednesday is for the chargers only.

Rusty.

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