Waimea Rivermouth Surf Forecast and Surf Report

Alright, Rusty here. Let’s get stuck into this. We’ve got a solid 16-day run ahead, but you’ll need to be patient. The first real action doesn’t kick off until the afternoon of Monday, September 14th.

The early days are small and a bit weak. Monday the 14th starts off with a tiny 1 ft glassy wave from the SW, but the energy is low, so it’s more of a drift than a surf. The afternoon perks up with the same size but a long-period 22-second groundswell, giving the water some real push. Still, it’s not going to fire.

Tuesday the 15th is a write-off in the morning with a cross-shore breeze messing things up, but Tuesday afternoon cleans right up. You get a glassy 2 ft SSW swell with moderate energy. Conditions will be clean, and for a beginner-friendly spot like Waimea Rivermouth, it’s a good time to get a few long, easy rides.

The pattern builds through Wednesday and Thursday. By Friday the 18th, we’re into the goods. Morning sees 3 ft from the SSW, with a clean cross-offshore wind and strong wave energy. This is where it starts to get fun. The swell is still small enough for most abilities, but the power is building.

Now, the standouts. If you’ve got a board and some time, circle Saturday September 19th and Sunday September 20th. Saturday morning delivers a 6 ft easterly swell with a short period of 8 seconds, but the energy is pumping and the wind is clean. By the afternoon, it jumps to 7 ft. That’s pushing into the size where beginners might want to sit it out, but for the rest of us, it’s game on. Sunday holds similar – 6 ft to 7 ft from the E, with clean cross-off breezes and very strong energy. The wave comment says "very good surf conditions" and I agree – that’s the best of the run.

After that, we ease a bit. The middle of the week (Sept 22-25) stays fun with chest-to-head-high easterly swell, glassy mornings, and clean afternoons. The water temp is about average for the time of year, so no surprises there.

The final weekend, September 27th-28th, drops back to smaller SSW swells, then a late pulse of easterly energy returns on Monday the 29th with glassy 5 ft conditions to close things out.

Crowds are listed as "sometimes" at Waimea Rivermouth, so expect company on the better days, especially that Saturday and Sunday. But with clean conditions and solid swell, it’ll be worth sharing the peak.

Overall, the first week is a slow burn, but from Friday the 18th through Tuesday the 23rd is the real window. The standout is undeniably Saturday September 19th and Sunday September 20th – that’s the one to aim for.

Stay stoked,
Rusty.

Read more