San Mateo Surf Forecast and Surf Report

Alright folks, Rusty here. Let me tell you straight—it's a slow burn out at San Mateo right now, but there's some fire on the horizon for those willing to wait it out. We got some proper groundswell trying to push through, but that wind is going to be our main battle for the first part of this run, and it's gonna make things look pretty average.

Right now, we're seeing the last bit of a weak swell. Thursday morning, we've got a touch of southwest swell at 2ft with a long 16-second period, but it's crossed up and lacking any real punch, with only about 249 units of energy. It's not doing much except putting some texture on the water. By Thursday afternoon, that southwest wind gets a bit stronger and it chops up real quick. That early stuff is only for the die-hards who don't mind the mess.

We've got a bit of a lull moving into the weekend. Friday and Saturday are there, but they're not offering much in the way of quality. The mornings on both days have a little more size—Friday morning sees 3ft, and Saturday morning jumps to 5ft—but the energy is only moderate, with readings like 662 and 1078. The problem is, that wind is swinging from the southwest, putting a cross-chop on everything, and it's making the surf look pretty ordinary. The period is dropping too, which takes away some of the grunt. For a spot like San Mateo, that southwest swell is okay, but it's not showing its best face with this wind messing it up.

Sunday and Monday are a real disappointment. The swell backs off a touch, the period gets shorter, and we're just getting poor conditions with a fresh cross-onshore breeze on Sunday afternoon. It's a total write-off for those wanting to get the board wet.

Then, here's the little spark we've been waiting for. Wednesday the 2nd of September, first thing in the morning, the wind just dies. It goes glassy. Proper glassy. The swell is still small at 3ft, but that clean surface is a huge positive. The energy is moderate at 466, and with that 12-second period, it might be a little on the short side, but on a point break like this, there could still be some fun ones if you're in the right spot. That's your standout window for the first week. Don't miss that morning session.

The lull continues for a couple of days after that. Thursday the 3rd is looking cross-onshore and messy. Friday the 4th, we finally see the size start to come back. It jumps to 5ft in the morning and 5ft+ in the afternoon, and the energy is getting into that strong range, hitting 1138 and 1249. The wind is still cross-shore and creating some texture, so it's not perfect, but the power is definitely starting to return. That's the building phase.

And then, over the horizon, on the 9th of September—a week and a half out—we've got something promising. It's a long way off, so take this as an early heads-up, but the models are showing a real dump of energy. Wednesday morning the swell is up at 5ft, and it pushes to 5ft+ in the afternoon with a solid 17-second period. The energy readings jump to 1418 and then 1580, which is strong, proper stuff. The wind is still a bit onshore, so we'll have to see how that plays out, but if it cleans up, San Mateo could be firing. That's the one to put a star next to on the calendar.

So, here's the takeaway: the next few days are small and bumpy. Get out there for that glassy Wednesday morning for the cleanest waves of the first week, even if it's not big. Then, keep your eyes locked on the 9th. It's promising, but it's a long-range call, so don't get too committed yet. We'll be watching.

Rusty out.

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