Onjuku Surf Forecast and Surf Report

Alright folks, Rusty here. Let’s get into it.

We’ve got a bit of a slow start, but the first real surf pops up on Sunday the 23rd of August at Onjuku. It’s small and ordinary to start, with a 2.3ft easterly swell and a 9-second period, but the wind is a cross-off from the NNE at 9 mph, keeping things clean. The combined energy is weak (105). Not a standout, just a warm-up.

The real magic starts to brew on Monday the 24th of August. Monday morning is the first true standout of the window. We’ve got a 2.6ft swell from the SSE with a very long 15-second period – that’s proper groundswell energy. The wind goes glassy out of the SE at just 3 mph, and the wave energy jumps to moderate (803). This is clean, easy to paddle out, and that long period will push through nicely. Onjuku is an exposed beach, so with that long period, expect some nice lines but maybe a bit too straight for some. Still, this is the best session on offer until things get bigger later.

The swell builds through the week, but the wind turns onshore and rubbish from Tuesday through to Thursday, with cross-on SW winds blowing 12-16 mph. The swell gets to 6.2ft on Tuesday, but it’s messy and choppy. Not worth it.

We get a reprieve on the morning of Friday the 28th of August. The swell drops back to 2.3ft from the east, with a 13-second period, and the wind is a light cross-off from the NW at 6 mph. The energy is still weak (309), but the conditions are clean. A fun little session, but nothing huge.

The next true standout is Monday the 31st of August. The swell picks up to 3.6ft from the ESE with a 14-second period, and the wind is a gentle cross-off from the ENE at 9 mph. The combined energy is moderate (753). This is shaping up to be a really good morning session with clean, long-period waves.

Then, on Tuesday the 1st of September, the wind finally goes offshore. The afternoon session sees a 3.9ft ESE swell with a 12-second period, and a clean offshore breeze from the north at 12 mph. The combined energy is moderate (572). This is a solid offering with clean, offshore waves.

Looking further out, the swell gets bigger. On Saturday the 5th of September, the afternoon shows a 4.6ft SSE swell with a very long 16-second period, and a cross-off breeze. The energy is strong (1301). This is promising, but it’s a long way out.

The biggest swell of the period arrives on Sunday the 6th of September. The morning sees an 8.2ft ENE swell with a short 8-second period. The combined energy is strong (1056). This is excellent for experienced surfers only – that size is too big for beginners, and the short period will make it dumpy and powerful. The wind is a clean cross-off, so it’s going to be a heavy, challenging day for the crew who know what they’re doing.

By Monday the 7th of September, the swell is predicted to be 11.5ft from the east, with a 10-second period and a very strong energy reading (2492). That’s massive, likely too big for this break, so only the absolute top-end experts would even bother.

Overall, the standout is the glassy Monday morning of the 24th of August for clean, quality waves, and the offshore session on Tuesday the 1st of September. The big swell on the 6th is for the experienced only.

Alright, catch you out there.

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