You’re probably checking the forecast because you’ve got a weekend trip planned or you're just trying to figure out if you can finally wash the car without it getting pelted by a surprise shower two hours later. Honestly, San Clemente has a reputation for being "perfect" all the time, but if you live here, you know that’s kinda a lie.
Especially in January.
Right now, the san clemente 10 day weather is looking like a bit of a mixed bag, and it's definitely not just endless summer vibes. Today, Saturday, January 17, 2026, started out pretty chilly. We hit a low of 47°F overnight, and even though it’s "partly sunny" right now, the high is only expected to hit 69°F. It’s that weird Southern California winter where you’re constantly taking a hoodie on and off every time you walk into the shade.
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The Week Ahead: Sun, Clouds, and a Bit of a Mess
If you’re looking at the next few days, Sunday is actually the "heat wave" of the week. We’re looking at a high of 70°F. Basically, that's as good as it gets for a while. Monday and Tuesday (January 19-20) are sticking to a very consistent 67°F with full sun. It’s perfect for a walk down at the Pier or hitting the Beach Trail, but don't let the sun fool you; the wind is coming from the west at about 3 to 4 mph, so it’ll feel crisp.
Then things get a little weird.
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By Friday, January 23, the clouds move in heavy. We’re talking a high of only 65°F and a 25% chance of light rain overnight. If you have plans for next Saturday, January 24, you might want a backup. The forecast is calling for a 40% chance of showers both day and night. It’s not a total washout—this isn't Seattle—but it’s enough to make the sandstone bluffs at Calafia slippery and the traffic on the I-5 a nightmare.
Why the Forecast Usually Trips People Up
People see "partly sunny" and think they’re going to be laying out in a bikini at T-Street.
Bad idea.
The humidity is hovering around 49% to 51% most of this week, but it jumps to 70% by the time the rain hits next Friday. That dampness makes 65°F feel a lot colder than it sounds on paper.
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Also, the ocean? It’s currently about 61°F to 62°F. That’s actually a couple of degrees warmer than the historical average for mid-January, which usually sits closer to 59°F. But unless you’re wearing a 4/3mm wetsuit, you aren't staying in that water for more than five minutes without turning blue. The surf is looking pretty small too—mostly knee-high 2ft stuff with long 13-15 second periods. Great for longboarding at Doheny, but maybe a bit frustrating if you're looking for real swell.
What to Actually Do This Week
Since it’s going to stay mostly dry until Friday, take advantage of the sunny stretch between Monday and Wednesday.
- Hit the Outlets: If the wind picks up, the Outlets at San Clemente are tucked away enough to stay relatively shielded.
- Casa Romantica: Go on Tuesday when it's clear. The views of the pier from the gardens are unmatched when there’s zero haze.
- Rainy Day Backup: If Saturday the 24th actually turns out as wet as they say, head over to the Surfing Heritage and Culture Center. It’s indoors, and honestly, even if you don't surf, seeing the history of the boards is pretty wild.
Basically, the san clemente 10 day weather is telling you to enjoy the sun while it lasts through Wednesday, because the end of the month is looking much more "wintery" than we’re used to.
Actionable Advice for Your Visit
Don't trust the daytime high. Always pack a mid-weight layer for after 4:00 PM because as soon as that sun dips behind the Pacific, the temperature drops fast—we’re talking a 15 to 20 degree swing down to the low 50s. If you’re heading to the beach next weekend, check the Saturday morning report one last time; that 40% rain chance is right on the edge of being a "maybe" or a "definitely."