Onjuku Surf Forecast and Surf Report

Alright folks, Rusty here. Let’s get into it for Onjuku. We’ve got a bit of a wild ride ahead, but you gotta be patient.

The next 16 days start off with a bang, but it’s not for everyone. The first real surf kicks in on Monday, August 10th, with a solid 8ft easterly swell rolling in. The energy is cranking (1631), and the water is a warm 81°, which is about average for this time of year. However, the wind is a fresh cross-offshore from the NE at 22 mph, which keeps it clean, but those conditions are a little tricky. The swell period is 11 seconds, so it’s got some decent power, but for a beach break, that long period can make it a bit straight. This is expert territory at 8ft; definitely too big for beginners.

The standout window is Tuesday morning, August 11th. We’ve got a 7ft easterly swell with a 11-second period, and the wind is a clean offshore from the north at 12 mph. The energy is massive (1983), and the report says excellent surf for experienced surfers. This is the best on offer. The water temp is still warm, and the offshore wind will make those waves glassy. Crowds are a possibility here, so get out early.

Wednesday morning, August 12th, the swell drops right off to 4ft, and the wind goes cross-onshore, turning it into a bit of a mess. The energy plummets to 348. That’s no good.

Thursday, August 13th, through to Saturday, August 15th, is a bit of a mixed bag. Swell hangs around 5ft to 6ft, with mostly cross-offshore winds, but the energy is moderate. The wave comments are “marginal” or “questionable,” so it’s not really worth a special trip. The wind is moderate, and the swell is from the east-southeast, but the period is short (9-10 seconds), so the waves will be a bit crumbly.

Now, hold on to your board. Sunday, August 16th, we get another big pulse. The morning shows a 8ft easterly swell with a 10-second period, and the wind is a fresh offshore from the north at 22 mph. The energy is huge again (2092). This is a serious session, but it’s only for experts. The afternoon gets a bit messier with a strong offshore breeze at 25 mph, making it hard to paddle into. Monday, August 17th, continues with similar size and offshore winds, so if you’re an advanced surfer, that stretch from Sunday to Monday is your window.

After that, the bottom falls out. From Tuesday, August 18th, all the way through to Tuesday, August 25th, it’s a flat spell. The swell drops to under 3ft, the wind goes onshore or cross-onshore, and the energy is weak (under 300). The wave comments are all “poor” or “marginal.” It’s a solid week of nothing. The only small bright spot is a little 3ft pulse on the 22nd from the ESE, but with onshore wind, it’s not worth paddling out for.

So, to sum it up: the best surf is the morning of Tuesday, August 11th, and then the big, powerful, expert-only window from Sunday, August 16th, to Monday, August 17th. After that, put the board away for a week.

Rusty.

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