21st Street (Miami) Surf Break

Lat Long: 25.80° N 80.13° W

21st Street (Miami) Surf Forecast and Surf Report

Issued: 7 pm 06 Aug 2026 (local time)

Forecast update in  hr  min

Today's 21st Street (Miami) sea temperature is
30.3° C
0.7° 

21st Street (Miami) surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


21st Street (Miami) surf forecast from 7 Aug 2026:

  • Most powerful swell: Friday 7 Aug, 11PM (local time) - 2.5ft (0.8m), 8s period, E swell with 88 kJ wave energy.

Best Forecast Surf Conditions for 21st Street (Miami) this week:

The most powerful waves expected at 21st Street (Miami) in the next 16 days are 0.8m 8s and forecast to arrive on Friday (Aug 07) at 11PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 4s period and expected on Saturday (Aug 08) at 2PM.

Wave TypeTime (EDT) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful11PM (Fri 7th Aug)2.5ft (0.8m) 8s

Table - best surf conditions forecast for 21st Street (Miami) over the next 16 days.


The Lowdown

Alright folks, Rusty here. Let’s be straight with you—this isn't the week to be dreaming of pumping barrels. The next sixteen days are looking pretty grim for any proper surf. We’ve got a long stretch of small, choppy, and wind-blown conditions that will have you checking your gear for dust more than waxing up. Honestly, it’s a real dry spell.

The whole window is basically a write-off for anything worth paddling out for. We’re looking at a long run of poor surf quality. The swell energy is weak, barely registering above the low end of the scale, with values mostly in the low teens and sometimes even lower. The wind is the main story, and it's not a good one. It's persistently cross-onshore, making everything on the small side a messy, bumpy affair. There’s no stand-out day, no hidden gem, just a flat, choppy hump we gotta get over.

Starting with the first real chance of anything, which is around Friday, August 7th at 21st Street (Miami). It's inconsistent, and honestly, it’s not great. The swell is a weak 2ft from the East with a period of 8 seconds, but the wind is already messing it up. The energy is weak at 131, and the forecast is calling it poor. It stays like this for days. Saturday the 8th and Sunday the 9th are more of the same—small, short-period slop with a moderate cross-onshore breeze chopping it up. The energy drops right off, hitting numbers as low as 22.

As we tick through the following week, the story doesn't change. The mornings offer a touch more size, but it’s still tiny, and the wind keeps ruining any chance of clean waves. The swell period stays short, mostly between 4 and 6 seconds, which means junky, disorganized waves with no push. The water temp is about average for this time of year, so at least you won't be freezing while you watch it dribble. The energy levels stay weak in the 7 to 61 range.

We get a tiny blip of hope around Saturday, August 15th, with a slightly bigger 3ft swell from the southeast, but it’s still a poor quality. The wind is still cross-onshore, so it's going to be lumpy and hard to enjoy even at that size. Then it’s back to the same old story. By the time we roll into the second week, the situation becomes even less interesting. The swell stays small and weak, and the period is just as short.

The only slightly interesting moment, and I mean *slightly*, is the early morning of Thursday, August 20th. There's a predicted glassy period with barely a breath of wind. But, of course, the swell has backed right off to a pathetic 2ft. So you might have a clean surface, but there’s nothing to ride. It's like a beautiful, empty parking lot with no car to drive. Then the wind picks up again in the afternoon, just to rub it in.

To be honest, with the conditions this poor and the wind constantly messing things up, this stretch of beach looks more interesting for kite surfing than paddle surfing. There's plenty of wind for that, but for us surfers, we're just looking at a long, flat, blown-out run. We gotta be patient, watch the charts, and hope the models change. It tends not to stay this poor for long around here, so keep the faith.

This is Rusty, signing off.

Short Range Forecast

Light rain (total 6mm), mostly falling on Fri morning. Warm (max 29°C on Thu night, min 28°C on Thu night). Wind will be generally light.

Days 5-7 Weather Summary

Mostly dry. Warm (max 29°C on Sun night, min 28°C on Sun night). Wind will be generally light.

Friday
7
Saturday
8
Sunday
9
Monday
10
Tuesday
11
Wednesday
12
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.1
ENE
5
0.7
E
8
0.7
ESE
5
1.1
E
5
0.4
E
8
0.3
NE
9
0.3
NE
9
0.7
ESE
4
0.3
E
8
0.8
E
4
0.7
ESE
4
0.5
E
4
0.6
E
4
0.7
ESE
4
0.4
E
4
0.6
ESE
4
0.2
E
6
0.4
ESE
4
0.2
E
7
Wave Graph
Metric surfscale
Energy kJ
69
57
29
53
26
12
12
19
10
22
16
7
10
16
5
9
3
5
4
Wind (km/h)
20
ENE
15
ESE
15
ESE
25
ESE
15
SE
15
E
20
ESE
20
ESE
15
E
25
ESE
20
ESE
15
E
20
ESE
20
ESE
15
E
20
SE
10
ESE
15
SE
15
SE
Wind State
on
cross-on
cross-on
cross-on
cross-on
on
on
cross-on
on
on
on
on
on
cross-on
on
cross-on
cross-on
cross-on
cross-on
High Tide
3:04AM0.73m
4:11PM0.77m
4:13AM0.74m
5:20PM0.79m
5:24AM0.77m
6:23PM0.84m
6:30AM0.81m
7:21PM0.88m
7:31AM0.87m
8:13PM0.92m
8:26AM0.91m
9:01PM0.95m
Low Tide
9:05PM0.17m
9:35AM-0.00m
10:15PM0.17m
10:44AM-0.02m
11:25PM0.14m
11:51AM-0.05m
00:30AM0.10m
12:53PM-0.08m
1:28AM0.04m
1:50PM-0.11m
2:21AM-0.01m
2:43PM-0.12m
3:11AM-0.05m
clear
thunderstorm
thunderstorm
rain showers
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:48
6:50
6:50
6:50
6:50
6:50
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:02
8:01
8:01
8:00
8:00
7:59
7:58
 mm
2
2
2
Temp °C
29
29
29
29
29
29
29
29
29
29
29
29
29
28
29
28
28
29
29
Feels °C
31
32
32
32
32
31
31
31
31
31
30
31
32
30
31
31
31
31
31
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  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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Information about the 21st Street (Miami) Surf forecast

The above surf forecast table for 21st Street (Miami) provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at 21st Street (Miami) can be found by selecting the local surf guide option on the grey menu. Our 21st Street (Miami) surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (21st Street (Miami)) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).

Further information to help with frequently asked questions about our surf forecast for 21st Street (Miami) may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.

21st Street (Miami) is 1 km (1 miles) from the city of Miami Beach. If you plan a vacation in South Florida, look for hotels and other accommodation in Miami Beach. Miami Beach has rooms for a wide range of budgets as well as car hire and transport links.

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