Waimea Rivermouth Surf Forecast and Surf Report

Alright folks, Rusty here. Let’s have a look at what’s cooking for Waimea Rivermouth over the next couple of weeks.

We’ve got a solid run of surf coming up, starting from the very first day of the period. It kicks off on Wednesday, 2nd September, with a clean 2.6ft south swell rolling in, and the wind is a cross-off. The water temp is about average for this time of year, so nothing unusual there. That first session will be nice and gentle for the beginners, with a long 16-second period groundswell making the paddling out easy and the waves a bit more lined up.

Things really start to build through Thursday and Friday. By Friday the 4th, we see the swell picking up more consistently in the 4.3ft to 6.2ft range, mostly from the east. The wind stays favourable—cross-off from the ENE—keeping the surface clean. The combined energy is getting up there, with readings like 889 (moderate energy) that show the ocean is waking up. This is good, fun surf for the average surfer.

Now, the standout window is definitely the weekend. Saturday the 5th afternoon and Sunday the 6th are absolute crackers. On Saturday afternoon, we’ve got a 6.2ft east swell with a 14-second period, and the combined energy jumps right up to 1994 (strong energy). The wind is a moderate cross-off breeze, so it’s going to be clean and punchy. Then Sunday keeps that quality going—5.9ft to 6.2ft east swell, 13-second period, and combined energy readings of 1779 and 1935 (strong energy). The wind goes light and cross-off. This is the best on offer: for experienced surfers, these days are going to be pumping with proper shape and power. Crowds are “sometimes” a thing here, so you might have a few out, but with this quality, don’t be surprised if it gets a bit busy.

We hit a bit of a speed bump on Monday the 7th morning. The swell is still big at 7.2ft from the SSW, but the wind goes cross-shore and it’s a bit messy. The afternoon cleans right back up though, so don’t write it off. Tuesday the 8th is a write-off—a 13.1ft SSW swell with a near gale cross-onshore wind, blowing it all to pieces. That’s only for the kites out there, not for paddle surfing.

After that trough, the surf settles down into a nice, mellow groove. From Wednesday the 9th through the middle of the following week, we’re looking at clean, glassy conditions with small east swells in the 4.6ft to 5.2ft range. The wind goes very light or glassy, especially from the 11th onwards. It’s not big, but it’s perfect for a longboard or a funboard, and the consistency stays fairly good.

Then right at the end of the forecast, around Monday the 14th afternoon, we get another spike. An 8.2ft south swell with a 9-second period rolls in, combined energy hitting 1404 (strong energy), and it’s glassy. This one is for the experienced crew again—that size at the rivermouth will have some juice. And then on the 15th and 16th, a very long-period SW groundswell (21 seconds, then 20 seconds) arrives, but it’s small at 2.3ft to 3.0ft. That long period means the sets will be very organized and the paddling out is a treat, and those waves will wrap nicely into the river mouth.

There are no big gaps with no recommendations here. The only truly blown-out day is Tuesday the 8th. Everything else is worth a look, with the weekend sessions being the clear winners.

Stay stoked.

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