Onjuku Surf Forecast and Surf Report

G’day, I’m Rusty. Let’s talk about what’s coming up at Onjuku—it’s a bit of a mixed bag, but there’s some interesting stuff on the horizon if you’re patient.

Right now, the first solid surf recommendation kicks off on Monday, 27th July. To be honest, the early part of the week is pretty average. Monday morning you’ve got a small 1.6 ft swell from the SE with a short period, only 10 seconds, and the combined energy is weak (126). The wind is cross-off from the NNE at 15.5 mph, so it’s messy and not worth paddling out. Monday afternoon picks up a bit to 3.9 ft from the NE, but that’s a short, weak period (6 seconds) and cross-off wind at 15.5 mph too. The water temp is 80.4°, which is about normal for this time of year.

Tuesday (28th) is similar: Tuesday morning has 3.0 ft ENE swell, period 8 seconds, cross wind from the E at 6.2 mph. It’s not great. The small swell and light cross wind just don’t make for good waves. Tuesday afternoon is even worse with 2.6 ft and onshore wind.

Wednesday and Thursday (29th and 30th) stay small and ordinary. Wednesday morning (3.0 ft, SSW, period 7 seconds, cross-off wind) is surfable but nothing to write home about. Thursday morning has 2.3 ft, NE, period 8 seconds, and cross-off wind. The energy remains low across the board—most readings are between 100 and 150—so the waves will be weak and unexciting.

Friday (31st) through Saturday (1st August) the swell drops even further. 1.6 ft to 2.0 ft, period 8 seconds, energy dropping to 65 on Saturday morning. It’s all cross-off wind, light, but the waves are just too small to get excited about.

Now, here’s where things get interesting. Sunday, 2nd August, the swell picks up and turns into something worth watching. Sunday morning has 2.0 ft from the SE but check the period: 15 seconds! That’s groundswell, with moderate combined energy (287). The wind is cross-off from the ENE at 9.3 mph, so it’s clean. Sunday afternoon jumps to 3.6 ft from the SE, period 14 seconds, and the energy is getting solid at 576. This is the first decent window in ages. The water is still around 80.4°, which is average for the season.

Monday, 3rd August, sees a jump to 6.2 ft from the SE (period 17 seconds) and energy is ramping up to 2025. But there’s a catch—the wind shifts to cross-shore from the E at 9.3 mph and there’s light rain. The surf is marginal due to tide and conditions, but the swell is real and the period is very long (17 seconds). At 6.2 ft it’s still manageable for intermediates, but the long period makes it better suited for a point or reef setup than a beach break like Onjuku, which can get a bit straight and closed out.

Now, this is where it gets wild. Tuesday, 4th August, the swell explodes. Tuesday morning you’ve got a solid 9.8 ft from the ESE, period 17 seconds, and the combined energy is a massive 5287—that’s strong. The wind is cross-off from the NE at 6.2 mph and the conditions are clean. But let’s be real: 9.8 ft is expert territory, especially with that very long period. It’s going to be big, powerful, and no place for beginners. This is the standout for experienced surfers only.

Tuesday afternoon (4th) and Wednesday morning (5th) get even bigger: 11.5 ft from the ESE, period 16-17 seconds, energy up to 6779 and 5522. Wednesday morning is glassy with NE wind at just 3.1 mph—gorgeous conditions—but the swell is too big for the break, and the forecast says the same. This is for big-wave chargers only.

Thursday, 6th August, stays massive: 11.5 ft to 13.1 ft overnight, period 16-17 seconds, energy peaking at 9478. The wind is cross to cross-onshore, not ideal, but the power is unreal. Again, this is too big for paddling at Onjuku. Friday (7th) keeps growing: 16.4 ft to 19.7 ft, period 18 seconds, energy over 25000. That’s enormous. Onshore to cross-onshore wind from the SE. By Saturday (8th), we’re talking 27.9 ft with onshore wind and 850

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