Onemana Surf Forecast and Surf Report

Alright, let me tell you how things are shapin' up at Onemana. It's a bit of a tough stretch for us at the start, to be honest. We've got a few weeks of very ordinary conditions before we see anything close to decent.

The real problem for the next couple of weeks is the wind. It's coming from all the wrong directions for this spot – a lot of SSE and S cross-shore and even cross-on winds that will chop things up. Early on, on Sunday the 16th, we even have some light rain with a cross-on breeze from the SSE at 16 mph, keepin' the energy weak at (149) and the surf small at 3 ft from the east. Not worth paddlin' out.

Monday the 17th starts with a bump in swell from the SE to 6 ft, but that short period of 6 seconds is just windswell, and with the SSE wind still blowin' 16 mph, it's gonna be messy. That energy level climbs to (324) but the quality just isn't there. By the afternoon, the wind drops to a gentler 9 mph from the S, swell drops back to 3 ft, and it's still not lookin' good.

We'll see a few cleaner windows from Tuesday the 18th through to Wednesday the 19th, with lighter winds and even some cross-off conditions. The water temperature is about 59°, which is average for this time of year. But the swell is tiny – anywhere from 2 ft to 4 ft – and the energy is real weak, never cracking (100). The cleanest moments will be glassy, but with no real push, it's not worth the effort.

This blank run goes on and on, with swell barely showin' up for the rest of the week and into the next weekend. The period from Friday the 21st through to Saturday the 29th is almost a complete write-off. The swell is mostly 0.7 ft to 3 ft at best, with very low combined energy (usually under 100). Even when the wind goes offshore from the WSW on the 24th, the swell is 2 ft at best, and the period is a short 6 seconds from the NNW. It's dead in the water.

Alright, let's talk about the one tiny highlight that might get a bit of a pulse. Sunday morning on the 30th of August. That’s over a week away, so don't book your flights yet. The forecast shows a jump in the swell from the NNW up to 6 ft, with a combined energy of (341). It's not a long-period groundswell – only 7 seconds – but it'll have some push. What's interesting is the wind: glassy. That “Slight air” from the NNW means it could be clean. The break itself (Onemana) is fairly consistent for the area. But keep in mind, it's all preliminary at this range. By the afternoon, the wind swings N at 9 mph and it gets a cross-shore bump, so that small window on the morning of the 30th is the only real chance you've got in the whole 16-day outlook.

Rusty

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