Rivermouth_Wailuku Surf Forecast and Surf Report

Alright, I’ve looked at what’s on offer for the next 16 days, and honestly, it’s a tough one. We’ve got a long stretch of messy, cross-onshore wind and choppy conditions that just won't let up. The first solid recommendation for a paddle doesn’t actually show up until July 10th, and even then, it’s a struggle.

Let’s start with the only spot in the mix: Rivermouth_Wailuku. The water temperature is sitting at 79°, which is about average for this time of year, so nothing wild there.

The whole outlook is a bit of a grind. From Friday the 10th right through to the end of the month, it’s a constant battle with wind from the ENE and NE, blowing cross-on at 9 to 15 mph. That keeps the surface chopped up and the waves messy. The swell is hanging around 3 ft to 6 ft, mostly from the ENE, with a short, weak period of 6 to 8 seconds. The combined energy values are all over the place, from weak readings around 135 (moderate wave energy) up to a few moderate spikes around 441 (moderate wave energy), but it’s never enough to overcome the wind.

There’s a little blip of hope on July 22nd and 23rd. The swell drops right down to 2 ft to 2 ft, but the period jumps way up to 12 to 14 seconds. That’s a long-period groundswell, which means better shape and energy, but it’s tiny. At a reef break like Rivermouth_Wailuku, that kind of long-period, straight-running swell can actually work well, but it’s just too small to get excited about. The wind is still cross-on, so it’s not clean, but it’s lighter.

The best of a bad bunch is probably the morning of July 22nd. It’s a clear morning, the swell is 2 ft from the E with a 14-second period, and the wind is a lighter 9 mph from the ENE. The energy is moderate at 330. It’s not a standout by any stretch, but it’s the least offensive window. The morning of July 23rd is similar, with a 2 ft, 12-second period swell and light NE winds.

Honestly, there are no true standouts here. The wind is the enemy almost every single day. If you’re a kitesurfer, this constant cross-onshore breeze and 5 ft to 6 ft lumpy swell might be more interesting. For a paddle surfer, it’s a waiting game. The forecast can always change, but right now, it’s a pretty blank run for this area.

Rusty.

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