21st Street (Miami) Surf Forecast and Surf Report

Alright, let’s get into it.

Right off the bat, I’m gonna be straight with you—this 16-day stretch is looking pretty grim for any real surf at 21st Street (Miami). There’s very little on offer, and what’s there is small, weak, and mostly messy. If you’re a beginner, there’s nothing to worry about—it’s not going to get big—but honestly, there’s barely a wave worth paddling for until the very end of the period.

The first week and a half is basically a write-off. From the 13th through the 23rd, we’ve got swell heights hovering between 0.3ft and 3.6ft, but the energy is all over the place—mostly weak, with combined energy readings from as low as 3 up to 168 on the 16th afternoon. That little bump on the 16th is the strongest pulse of the whole run, but it’s still just 3.6ft at 8 seconds out of the NNE. Short period, onshore winds, choppy conditions—it’s not going to be any kind of classic. That day and the 17th morning have the biggest waves, but they’re sloppy, cross-onshore, and honestly more of a mess than a wave. For beginners, the swell stays under 5ft all through, so it isn’t dangerous, but it’s just not fun.

From the 18th to the 23rd, we’re dropping back down to 0.3ft to 3ft, with wind mostly cross or cross-on, and the energy fades again—down to single digits at times. It’s the kind of period where you’d be lying if you said you saw a surfable wave out there. There are a couple of cleaner moments—the 19th and 20th mornings have some cross-off or offshore wind and clean conditions, but the swell is tiny, 1.3ft to 1.6ft, and the energy is weak (35 and 16 respectively). You could maybe catch a knee-high slop if you were desperate, but it’s not worth the paddle.

Here’s the thing though—the tail end of the run, around the 24th, things start to look a little more interesting. That Thursday the 24th is our one true standout. Morning has a 2.6ft NNE swell at 10 seconds, with a light cross-off breeze, and combined energy of 119—moderate, a real step up. Then the afternoon goes glassy. Dead glass. The swell stays at 2.6ft, but with clean conditions and that longer period, it’s actually surfable. It’s still not big—beginner-friendly even—but for 21st Street, that glassy afternoon is the best window of the whole forecast. Get out there if you can.

After that, the 25th and 26th are still small, with 2ft to 2.3ft NNE swell, but the winds are cross-onshore and choppy again, so it’s back to ordinary. The period does stretch to 11 seconds on the 26th, which adds a bit more push, but the energy is moderate (154 on the morning, 142 in the afternoon), and the chop kills it. The 27th and 28th just fade away again—small, onshore, nothing doing.

So, bottom line: this is a pretty barren run. The only real highlight is the glassy Thursday the 24th afternoon—small but clean, a proper little session. Everything else is either too small, too choppy, or both. It’s not a period to be excited about, but that one afternoon might give you a reason to grab your board.

Stay patient.

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