Arrieta Surf Forecast and Surf Report

Alright, let’s get into it. Rusty here, lookin’ at what’s comin’ down the pike for Arrieta. First thing: the water’s runnin’ a touch warmer than normal for this time of year—sittin’ at 75°, about 3° above average, so you can leave the thick rubber at home.

Right now, we’re lookin’ at a flat spell with no real surf on offer for several days. It’s gonna be a slow start. The first bit of worthwhile action doesn’t show up ‘til Thursday morning, September 3rd. That morning, there’s a small pulse of swell—4ft from the NNE, period short at 7 seconds, combined energy weak at 204. It’s clean with a gentle cross-offshore breeze. Surfable, but pretty ordinary. Not worth gettin’ too excited about.

From there, the rest of the first week stays marginal. Winds pick up, swell stays small or goes wonky with short periods, and the conditions are mostly poor. Friday morning (September 4th) has a tiny 3ft NNE swell and clean cross-off wind, but the energy is next to nothing (110). Saturday and Sunday are just as weak or messy. There’s a gap of several days where it’s really not worth paddlin’ out.

Now, if you’re patient, there’s a glimmer in the second week. Monday morning, September 14th brings a long-period groundswell—2ft from the NW, period a solid 14 seconds, energy at 187. Clean as a whistle with a light NNW breeze. That long period means better shape, more push, and longer lulls between sets—prime for a reef break like Arrieta. It’s inconsistent though, so you’ll need to sit and wait. But when a set comes, it’ll be worth it.

The best on offer? Tuesday, September 15th. The morning has a 4ft NNW swell with a very long 15-second period and a combined energy that’s strong—772. The wind is cross from the NNE, so it’s not perfect, but the afternoon cleans up nicely with a cross-off breeze. That afternoon session (also 4ft, 14-second period, 757 energy) is as good as it gets in this outlook. The swell direction (NNW) matches what this spot likes (optimum from N), so the waves will line up well. Keep in mind, it’s inconsistent here, and there’s the potential for crowds sometimes, so don’t expect solitude.

Wednesday, September 16th morning is also worth a look—4ft from NNW, 13-second period, strong energy at 776, clean with a moderate cross-off. Just a notch below Tuesday.

Bottom line: first few days are a write-off. Wait for that long-period groundswell kicking in around the 14th and 15th of September. Tuesday the 15th afternoon is the standout—biggest energy, right direction, and clean glass. Just don’t bank on it being perfect until we’re closer—long-range calls are always a little shaky.

Stay stoked,
Rusty

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