Rivermouth_Wailuku Surf Forecast and Surf Report

Alright folks, Rusty here. Let's break down what's coming for Rivermouth Wailuku over the next couple of weeks.

Right off the bat, I gotta be straight with you – this stretch of the forecast looks pretty grim. The wind is locked in from the east-northeast almost every day, blowing straight across the bank. That cross-onshore breeze is going to chop things up, and the swell is mostly short-period stuff coming from the same direction, around 4 to 5 feet. It’s a messy, average combo. The combined wave energy is moderate, sitting between 200 and 400 for most of the first week, but it's just not translating into any quality. The water temp is about average for this time of year.

We’re looking at a solid stretch of nothing here. From Tuesday the 14th all the way through to the morning of Wednesday the 22nd, it’s a write-off. The data keeps calling it "poor surf conditions," and I can’t argue with that. The wind is a constant problem, and the swell is low-period and onshore. There’s no standout day in that first week.

The first real flicker of something different shows up on the afternoon of Wednesday the 22nd of July. The swell jumps up a bit to 5 feet from the east-northeast, and the period stretches out to 12 seconds. The combined energy also jumps up to a solid 539 – that’s a decent push of moderate energy. The wind is still cross-onshore, but it’s lighter. It’s still not good, but it’s a step in the right direction.

Thursday the 23rd and Friday the 24th of July are the closest we get to a call. Thursday morning has 4 feet on 11-second period from the east-northeast, energy at 396. The wind is still a light cross-onshore, but the longer period suggests a bit more shape. Then Friday morning the 24th is interesting. The swell drops to 3 feet, but the period jumps right up to 17 seconds – that’s a very long period groundswell from the east. The combined energy is a strong 625. The wind is a light cross-onshore. Now, because this is a reef break, that long period is actually a benefit; it won't just close out. It’s a tricky one because the swell is small, but the quality of that energy could make for some clean, lined-up waves if the tide is right. The forecast calls it "marginal," and I’d lean that way too. It’s a gamble, but it’s the only one worth mentioning.

After that, it fades out again. The last few days of July and into the 29th are back to poor and marginal conditions with small, weak swell.

So, what’s the best on offer? Honestly, there’s no absolute standout. I’d have to say keep an eye on Friday the 24th of July. That long-period pulse from the east could give Rivermouth Wailuku a few clean, glassy runners if the wind stays light. It's a specialist's window, not a day for the crowds. Just remember, it’s a long way out, so don't book the week off work just yet.

Rusty.

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