Mutriku Surf Forecast and Surf Report

Alright, Rusty here, let’s talk about Mutriku. This is a tricky little reef break that needs the stars to align, and honestly, it’s a quiet window we’re looking at. The setup is sheltered, and the optimum swell direction is NW, so when it hits, it can be a gem. But this forecast is a long stretch of waiting.

The only real standout comes right at the start. Sunday morning, September 6th, we’ve got a solid 5 ft NW swell rolling in with a period of 12 seconds. That’s proper groundswell, full of energy—the combined energy reading is 666 (moderate). The wind is glassy, calm, and the water is about average for this time of year. This is a reef break, so that long 12-second period will draw nicely into the lineup, offering clean, well-shaped waves. The wave comment says "expect good surf conditions," and that’s the spark we’ve been waiting for. It’s rated as a beginner spot, but with the swell a touch over 5 ft, it’s got a bit of push for the more confident surfer. It’s inconsistent, so you’ll wait for the sets, but when they come, they’ll be worth it. Crowds are sometimes possible, but with the window being so narrow, you might get lucky.

After that, it’s a long, flat, and boring stretch. From Sunday afternoon, the energy drops and the winds turn cross-on or onshore. Monday morning, September 7th, is glassy but only 3 ft of NW swell at 9 seconds—just not enough juice. The combined energy is 320. It’s surfable, but very ordinary. Tuesday morning, September 8th, is the same story: 3 ft, glassy, but the energy is down to 180. It’s a flat spell.

We then hit a nasty patch. Wednesday, September 9th, sees a big jump in swell to 10 ft NW, but the period drops to 8 seconds and the wind is cross-on at 25 km/h. The combined energy is 1078 (strong), but the quality is poor. That’s a messy, choppy, un-rideable mess—only for the most committed, and even then, it’s not pretty. Over 8 ft is expert-only territory, and with that wind, it’s a write-off.

The rest of the first week and into the second week is a desert. Thursday, September 10th, through to the end of the forecast on September 21st, is a mix of surfable but very ordinary conditions, or just poor surf. The swell hangs around the 2 ft to 4 ft mark, mostly from the NW, but the periods are short and the wind is never cooperating. The combined energy sits between 83 (weak) and 459 (moderate). There are a few glassy mornings—like Saturday, September 19th, with 4 ft NW at 10 seconds and 304 energy—but the wave comment says "surfable but very ordinary." It’s just not enough to get excited about.

So, the bottom line: Sunday morning, September 6th, is your one real shot. Get out there early, enjoy the clean 5 ft NW groundswell, and then accept that the forecast is pretty quiet after that. It’s a blank run for a surf-starved stretch.

Rusty.

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