21st Street (Miami) Surf Break

Lat Long: 25.80° N 80.13° W

21st Street (Miami) 48 hour detailed Surf Forecast

Issued: 1 am 13 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.


How big are the waves at 21st Street (Miami) today (13 Aug):

  • Morning surf: Morning surf (13 Aug, local time) - 0.5ft (0.1m), 8s period with NE swell.
  • Afternoon surf: Afternoon surf (13 Aug, local time) - 0.5ft (0.1m), 8s period with NE swell.
  • Evening surf: Evening surf (13 Aug, local time) - 0.5ft (0.1m), 9s period with NE swell.

The current surf forecast for 21st Street (Miami) at 6AM is: 0.1m 8s primary swell from a Northeast direction and 0.1m 7s secondary swell from a East direction (forecast issued at 01:00am August 13). The wind direction is predicted to be cross-offshore.

Time (EDT) & DateWave HeightWave Period
Morning (13 Aug)0.5ft (0.1m)8s
Afternoon (13 Aug)0.5ft (0.1m)8s
Evening (13 Aug)0.5ft (0.1m)9s

Table - waves today at 21st Street (Miami). (Swell directed towards the surf break)


Short Range Forecast

Moderate rain (total 13mm), heaviest on Fri night. Warm (max 30°C on Thu afternoon, min 28°C on Fri morning). Wind will be generally light.

Thursday
13
Friday
14
Saturday
15
2 AM
5 AM
8 AM
11 AM
2 PM
5 PM
8 PM
11 PM
2 AM
5 AM
8 AM
11 AM
2 PM
5 PM
8 PM
11 PM
2 AM
5 AM
8 AM
11 AM
2 PM
5 PM
8 PM
11 PM
Rating
(10 max)
0
0
0
0
0
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
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.1
NE
8
0.1
NE
8
0.1
NE
8
0.1
NE
8
0.1
NE
8
0.4
SE
3
0.1
E
10
0.1
NE
10
0.4
SE
3
0.4
SE
3
0.4
SE
3
0.4
SE
3
0.4
SE
4
0.1
NE
9
0.4
E
3
0.6
E
3
0.7
ESE
4
0.7
SE
4
0.7
SE
4
0.8
SE
4
0.4
E
4
0.4
E
5
0.4
E
4
0.6
SE
5
Wave Graph
Metric surfscale
Energy kJ
3
3
3
3
3
3
3
4
3
3
4
4
3
3
3
8
12
18
18
22
6
7
6
21
Wind (km/h)
15
SSW
10
SSW
5
SSW
5
SSE
15
ESE
20
SE
15
SE
15
ESE
20
SE
15
SE
15
SE
15
ESE
15
E
20
E
20
ENE
25
E
20
SE
20
SE
25
SE
20
SE
20
SE
15
ESE
15
E
20
E
Wind State
cross-off
cross-off
cross-off
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
on
on
on
on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
on
on
High Tide
9:18AM0.93m
9:47PM0.95m
10:08AM0.94m
10:31PM0.94m
10:55AM0.92m
Low Tide
3:11AM-0.05m
3:32PM-0.11m
3:58AM-0.07m
4:19PM-0.08m
4:43AM-0.07m
5:05PM-0.02m
part cloud
clear
clear
part cloud
part cloud
clear
thunderstorm
clear
clear
clear
clear
clear
clear
clear
clear
clear
thunderstorm
thunderstorm
part cloud
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:52
6:52
6:52
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:58
7:57
7:55
 mm
1
3
9
Temp °C
29
29
29
29
30
30
30
29
29
29
28
29
30
29
29
29
29
29
29
28
29
29
29
28
Feels °C
31
32
33
33
32
31
33
32
30
31
30
32
33
31
31
31
31
31
30
29
31
31
31
30
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder
How to use the Wavefinder 

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