Polihale Surf Forecast and Surf Report

G’day, I’m Rusty. Honestly, this stretch is a tough one. We’re looking right into a pretty bleak 16‑day window at Polihale (Kauai). There’s almost nothing that’ll get you excited – tiny ankle‑slappers for days, with only a couple of very brief, ordinary windows where you could paddle out. The first real chance of anything wavesome doesn’t show up until Wednesday the 19th, and even then it’s barely a ripple. There’s a big gap at the start – from now up until Tuesday the 18th, it’s all tiny, weak swell and poor surf. Honestly, don’t hold your breath.

Let’s start from the beginning. Thursday 13th and Friday 14th are a wash – 1 ft of west swell with cross and cross‑off winds, combined energy in the 20s and 30s (very weak). Just not worth wetting a suit. Saturday 15th and Sunday 16th are similar – 1 ft to 1 ft of west‑northwest swell, still no power. The whole first week is a write‑off. Monday 17th and Tuesday 18th aren’t much better – a little 1 ft west‑northwest groundswell but with clean but cross‑off winds. Energy is still pitiful (40 to 57).

Wednesday the 19th morning sees a shift – a 3 ft north‑easterly swell, period only 7 seconds (short period, that’s windswell), and clean cross‑off wind. Combined energy sits at 62 – still very weak. But the afternoon gets a tiny pulse: 3 ft, same short 7‑second period, and the wind goes glassy – dead calm, clean as a mirror. That’s the best we’ll see for a while. Energy jumps to 131 (moderate). Still small, but at least it’s clean.

Thursday 20th holds similar – 3 ft to 4 ft north‑easterly windswell, glassy both morning and afternoon. Energy between 75 and 105 (weak to moderate). That’s about it for the whole run. Friday 21st morning is flat calm and glassy but only 3 ft from the north‑east – then it drops off again. Saturday 22nd afternoon picks up a weak 3 ft north‑easterly at 8 seconds, glassy again, energy 86.

Then from Sunday 23rd right through to Wednesday 27th, it’s basically zero surf – no swell recorded at all for most of those days, or tiny 1 ft west pulses with next to no energy. A real dead period.

The single standout – and I mean the only one worth mentioning – is Wednesday the 19th afternoon. 3 ft of north‑easterly windswell, glassy wind, and moderate combined energy (131). It’s small but it’s the cleanest, most lined‑up session of the whole forecast. Not a wave you’ll be telling stories about, but if you’re desperate, that’s your window. Unfortunately, the swell is short period, so it’ll be a bit lumpy and won’t hold shape for long. That said, the lack of crowd might be a plus – Polihale can get busy, but on this micro‑swell, most will stay home.

The only other flicker is Friday 28 August morning – a 2 ft west groundswell with a very long period of 16 seconds, glassy wind, and strong combined energy of 232 (that’s moderate‑to‑strong for that tiny height). But that’s over a week away – promising but less certain. Long period (over 15 seconds) means it’ll wrap around reefs and points better, but at beach breaks it’ll break too straight. For Polihale, that could still give a few fun ones if the sandbar is right. Don’t plan your week around it yet.

Water temp is about average for the time of year – no notable anomaly. You’ll be fine in boardies or a spring suit. Overall, if you’re a beginner, the biggest risk is boredom – the 3 ft is fine for learning, and the glassy conditions are perfect. But if you’re an experienced surfer, there’s nothing here to get you out of bed early. The long flat spell from the 23rd to the 27th is brutal – that’s five days with essentially zero surf. Not unusual for the area in this season, but wearisome all the same.

Stay patient, keep an eye on that Friday the 28th morning window, and maybe break out the kite gear if you’ve got it – the stronger cross‑off days with clean conditions could suit a foil or kite better than a paddle board.

Rusty.

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