Onjuku Surf Forecast and Surf Report

Alright, mate. Rusty here, and I've got the goods for the next couple of weeks around Onjuku. It's a bit of a mixed bag, so let's get into it.

We're looking at a frustrating start, honestly. Thursday the 13th is a write-off with that easterly wind and a lumpy cross-chop on a 6ft east swell. The energy's moderate, sitting at 600, but it's just messy. The water temp is bang on average for this time of year at 80°F, so no shocks there.

You'll have to wait until Friday morning, August 14th for something half decent. We get a cleaner window with a light cross-offshore breeze from the ENE and a 5ft east swell (588 energy). It won't be perfect, but it's definitely the best of the first week. After that, the weekend just goes flat and ordinary again. Saturday afternoon and Sunday are poor with building cross-shore wind.

There's a flicker on Monday morning, August 17th with a 6ft swell from the ESE (652 energy) and light cross-off wind, but it's not a standout. Then we hit a real slump. From Tuesday the 18th right through to Saturday the 22nd, the surf is tiny and poor. There's nothing worth paddling out for at all. A full five-day gap of pretty much nothing to recommend.

Now, listen up, because the second week changes completely. If you're experienced, mark your calendar for Sunday, August 23rd. That morning, the wind goes offshore from the north (light breeze), and we see a clean 6ft groundswell arriving from the SE with a very long 15-second period. The energy is huge, jumping to 2121. The afternoon gets even better: a 8ft swell from the SSE with a 16-second period and clean cross-off wind. Energy is massive at 3587.

Monday the 24th is an absolute standout. We're looking at a solid 10ft swell from the SSE with that same long 16-second period. The wind is a clean cross-off from the NE, light at 10 km/h. Wave energy is off the charts at 3764 in the morning, building to 4329 in the afternoon. This is proper groundswell. For a beach break like Onjuku, that long-period swell can break a bit straight, but the power and size are undeniable. This is for experienced surfers only at that size – over 8ft, it’s expert territory.

Tuesday the 25th and Wednesday the 26th have the same massive swell but it gets too big. The guidance is clear on that – swell heights are predicted at 10 to 13ft, with energy readings up in the thousands. It's a monster, but it's just too much to handle at this break, even with glassy conditions. The 27th of August is off the charts huge, with 33ft swell forecast, but that's just a spectacle for watching, not paddling.

So, the bottom line: the next week is pretty frustrating with a big gap in the middle. Your real targets are Monday, August 24th. Get up early for that 10ft SSE swell with the clean, light offshore wind. That's your best chance for some memorable waves.

Stay stoked,
Rusty

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