Wanjapu Surf Forecast and Surf Report

G’day, Rusty here. We’ve got a solid run of swell headed our way at Wanjapu, but it’s not all plain sailing. The window kicks off from Monday afternoon, 17 August, with a pulse starting to show, though conditions are a bit messy to start. The real fireworks kick in midweek, and there’s a couple of absolute standout windows that’ll get the blood pumping.

Let’s get into it.

Monday afternoon, 17 August, sees a 5 ft swell from the SSW, period around 14 seconds – that’s a touch of groundswell but not quite there yet. Winds are light cross-shore, so it’s not awful, but the combined energy is weak (1028) and the wave comment’s not getting excited. It’s a pass for now.

Tuesday, 18 August, picks up but the wind turns cross-on for the afternoon, messing with the 6 ft, 16-second SSW swell. The morning is cleaner with a lighter cross breeze and a 4 ft SW groundswell, but the energy’s still moderate (2064). Not the day to call in sick.

Now, Wednesday 19 August… this is where it fires. Wednesday morning is a beauty – glassy conditions, a 8 ft SW groundswell with a very long period of 18 seconds, and moderate wave energy (3473). That’s gonna be clean, powerful, and lined up. This is a standout for experienced surfers – over 5 ft, so it’s not for beginners. The afternoon holds with an 8 ft SW swell, 18 seconds again, and clean offshore-ish cross-off winds. Combined energy jumps to 4080 – moderate-to-strong. If you’ve got the skills, this is your window.

Thursday 20 August stays solid. Morning glass again with a 10 ft SW groundswell, 16-second period, and combined energy of 4122. That’s big and punchy – expert territory. The afternoon drops slightly to 8 ft but stays clean with cross-off winds. Both sessions are excellent for those who can handle it.

Friday 21 August still has size – 8 ft to 8 ft – but the wind gets a bit more cross, and the energy’s still strong (3248–3349). It’s a step down in quality but still fun if you’re chasing.

Saturday 22 August and Sunday 23 August see the swell drop a little, but winds turn cross-on, creating chops and bumps. The energy falls off to moderate (2291–1869). Still surfable but nothing special.

There’s a bit of a slump from Monday 24 August through to Saturday 29 August. Swell hangs around 4 ft to 7 ft, but winds are mostly cross or cross-on, and the combined energy lingers in the 1000–2000 range. Not a write-off, but no standouts in that stretch.

Then, Sunday 30 August afternoon offers a late pulse – 7 ft SW groundswell, 16 seconds, and clean cross-off winds. Combined energy jumps back up to 2520 – moderate but clean. That’s a solid way to finish the month.

Monday 31 August and Tuesday 1 September bring a big, long-period groundswell – 6 ft to 8 ft with periods of 18–21 seconds, and combined energy shooting up to 3905–4689 (strong). But wind is moderate cross or cross-on, making it lumpy. That kind of very long period (21 seconds) is prone to closing out beach breaks, but at a reef like Wanjapu (Wanjapu), it could be a freight train – only for experts who know the lineup.

Water temp is 79°F with zero anomaly – pretty average for the time of year, no surprises there.

The two true standouts? Wednesday morning, 19 August – glassy, 8 ft, 18-second SW groundswell, and moderate-to-strong energy. And Thursday morning, 20 August – glassy, 10 ft, 16-second SW swell, strong energy (4122). Both are advanced-only, but if you’re ready, they’ll be magic. Keep an eye on that Wednesday session – it’s got the cleanest conditions of the whole run.

Rusty out.

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