Waimea Rivermouth Surf Forecast and Surf Report

Alright, this is Rusty, and I’m looking at the next 16 days for Waimea Rivermouth. We’ve got a solid window of surf coming, but it kicks off with a bit of a punch.

The first real action starts on Saturday, September 5th, with a clean 6ft to 6ft easterly swell, around 13-14 seconds. That’s a proper groundswell. The combined energy is strong at 1790, and with a light cross-off breeze from the ENE, the surface is gonna be clean. The water is sitting at 81°, which is pretty much normal for this time of year, so no surprises there. This is good, solid surf for experienced surfers. The swell direction is from the east, but the break really likes it from the south, so it’s a bit of a trade-off, but still a good wave.

Sunday, September 6th, holds that same energy, with 6ft to 7ft of easterly swell, and the period drops a touch to 12-13 seconds. The wind stays cross-off, so it’s still clean. There’s a risk of thunderstorms later, but the morning session should be the pick.

Now, Monday, September 7th, things get serious. The swell jumps to 8ft in the morning, and by the afternoon it’s hitting 10ft from the SSW with a 15-second period. The combined energy rockets up to 3760. That’s a lot of water moving. This is expert-only territory. The wind is also cranking up to 25 mph, making it cross-off, which is fine for the wave face, but it will be a battle to get out. The size is way too big for this spot for most people.

Tuesday, September 8th, is a write-off. The wind swings onshore and the swell is all over the place. Don’t bother.

The real standout, and the one true highlight of this whole forecast, is Wednesday, September 9th, in the morning. The swell drops right down to a clean 3ft, but it’s from the SSW, which is the perfect direction for this break. The period is 14 seconds, so it’s a long, clean groundswell. But the magic is the wind: glassy. Absolute zero wind. The water is going to be like a mirror. The wave energy is low at 335, but for a small, clean, perfectly-shaped wave on a point break, it’ll be a dream. The crowd factor here is "sometimes", so you might get a few others, but it’ll be worth it.

The rest of the week and into the next is a mix of smaller swells. The second week has some promising glassy mornings on the 19th and 20th of September, with 3ft SSW swell, but the periods are shorter, around 15-16 seconds. The energy is moderate, so it’s more of a fun, small wave option than a heavy hitter. The 15th and 16th of September show a return of easterly swell around 6ft to 6ft with an 8-second period, which is short-period windswell, but the wind stays cross-off, so it’ll be rideable, just not as good as the earlier groundswell.

Overall, the best bet is that glassy Wednesday morning. If you're an expert, that Monday swell is there for you, but it’s a beast. The rest is a slow, clean grind.

Rusty.

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