San Jose Rivermouth Surf Forecast and Surf Report

Alright, this is Rusty checkin' in from the San Jose Rivermouth. Let's be real with you—this stretch is lookin' like a bit of a mixed bag. We've got some solid swell energy, but the conditions are gonna keep you on your toes.

The water temp is sittin' pretty average for this time of year, nothin' wild to report there. The river mouth setup is a consistent spot, but it's fairly exposed to the south swell, and the optimum direction is from the south, so we're on the right track.

The first proper window kicks off on Sunday, the 30th of August. Now, it's not a classic, but Sunday afternoon is where it's at. We've got a 4ft SSW swell chuggin' in at a 14-second period, giving us a moderate wave energy (815). The cleanest part of the day will be the afternoon with a light cross-offshore breeze from the west. That's your best bet for a few fun ones, even if the forecasts are a bit "marginal" on the tide. It's not a standout, but it's the only real window in the early days.

After that, we hit a bit of a lull. Monday and Tuesday are small, with the swell droppin' down to around 4ft, and the winds switching around. The wave energy drops off too (under 600). Not much to get excited about.

Then we get into a weird patch. From Wednesday the 2nd of September through to Friday the 4th, the swell builds again, but it gets messy. The wave energy goes through the roof on Thursday and Friday, hittin' over 1,700, but the winds are onshore and choppy. That 8ft swell on Friday morning is a big one, but with strong onshore winds, it's gonna be a washing machine. That's more of a kiteboarding session than a surf session, honestly.

Now, the real silver lining starts to show up around Sunday afternoon, the 6th of September. The swell settles back to a clean 4ft from the SSW with a 15-second period, and the light cross-offshore wind from the west makes it glassy. The wave energy is mild (749), but the conditions are clean. That's a lovely little window for a cruisey session.

The best run of the whole forecast, though, is mid-week. From Wednesday the 9th to Friday the 11th, we're lookin' at some proper glassy mornings. The swell is small—around 3ft to 4ft—but the period is a solid 15-16 seconds, which means the waves will have shape. The wind is glassy, sometimes even calm. This is your golden window. The wave energy is moderate (around 400-600), but the quality will be there. Thursday the 10th, with the 4ft SW swell and glassy conditions, is the pick of the bunch. It's not a big swell, but it'll be clean, fun, and you'll have the place to yourself if you're lucky.

Oh, and Saturday the 12th afternoon? That's a fun little surprise. A 2ft SSW swell, but with a 19-second period, and a light offshore from the northwest. That's a long-period groundswell, which will be more consistent at the river mouth. It's small, but it'll be clean.

So, to wrap it up: the early days are a write-off, but the second half of the forecast has some real gems, especially those glassy mornings from the 9th to the 11th. Don't sleep on the clean Sunday afternoon, either. Keep an eye on the charts, and get out there when it's glassy.

Rusty.

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