Rivermouth_Wailuku Surf Forecast and Surf Report

Alright, Rusty here, and I’m not gonna sugarcoat it. Looking at Rivermouth_Wailuku for the next 16 days, it’s a long, frustrating stretch. The wind is stuck cross-onshore the whole time, and the data is all screaming "poor surf conditions."

The first week is a total bust. From Tuesday the 7th right through Monday the 14th, it’s consistent poor surf. The wind is ripping from the ENE and NE at 12 to 15 mph, with a short-period swell of 2ft to 2ft. The combined energy is weak to moderate, ranging from 242 to 508. That short-period stuff with onshore wind is just a mess. There’s nothing to ride here.

Around Tuesday the 14th, the wind eases a bit to 9 mph, but it’s still cross-onshore, so you’re looking at "fairly choppy" conditions. The swell drops too, down to 1ft on Wednesday the 15th. Still not worth getting wet.

Now, the end of the run gets a little more interesting, but it’s still a compromise. On Saturday the 18th afternoon, the swell builds to 2ft from the ENE with a 9-second period, and the combined energy jumps to 760 (moderate energy). That’s the biggest swell of the whole period. But that stubborn 12 mph cross-onshore wind is still there, so the data still calls it "poor surf conditions."

Then on Tuesday the 21st, the afternoon shows the swell dropping to 0.8ft, but the period jumps to a very long 15 seconds from the east. The combined energy is 487. That’s a groundswell, and at a reef break, that could line up nicely. But again, you’ve got a 12 mph cross-onshore wind to deal with, so it’ll be choppy.

Wednesday the 22nd morning is similar: 0.9ft from the east at 14 seconds, with a lighter 9 mph breeze. Still cross-onshore, still "fairly choppy."

So, there’s no clear winner here. Every single entry in the forecast says "poor surf conditions." There is no day with offshore or glassy wind. The only thing that stands out even a little is that very long-period groundswell on the 21st and 22nd. A 15-second period at a reef could offer some real clean, powerful lines if you can handle the onshore wind. But that’s a big "if."

Don’t plan your week around it. This is one of those stretches where the forecast needs to change before it gets good.

- Rusty

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