21st Street (Miami) Surf Break

Lat Long: 25.80° N 80.13° W

21st Street (Miami) 48 hour detailed Surf Forecast

Issued: 1 am 20 Aug 2026 (local time)

Forecast update in  hr  min

Today's 21st Street (Miami) sea temperature is
30.7° C
1.1° 

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 (20 Aug):

  • Morning surf: Morning surf (20 Aug, local time) - 0.5ft (0.2m), 8s period with E swell.
  • Afternoon surf: Afternoon surf (20 Aug, local time) - 0.5ft (0.2m), 8s period with E swell.
  • Evening surf: Evening surf (20 Aug, local time) - 0.5ft (0.2m), 8s period with E swell.

The current surf forecast for 21st Street (Miami) at 4AM is: 0.2m 9s primary swell from a East direction (forecast issued at 01:00am August 20). The wind direction is predicted to be cross-offshore.

Time (EDT) & DateWave HeightWave Period
Morning (20 Aug)0.5ft (0.2m)8s
Afternoon (20 Aug)0.5ft (0.2m)8s
Evening (20 Aug)0.5ft (0.2m)8s

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


Short Range Forecast

Heavy rain (total 23mm), heaviest during Thu night. Warm (max 31°C on Thu afternoon, min 28°C on Sat morning). Wind will be generally light.

Thursday
20
Friday
21
Saturday
22
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)
0.2
E
9
0.2
E
9
0.2
E
9
0.2
E
8
0.2
E
8
0.2
E
8
0.2
E
8
0.2
E
8
0.2
E
8
0.2
E
8
0.2
E
8
0.2
E
8
0.2
E
8
0.2
E
8
0.2
E
8
0.2
E
8
0.2
E
8
0.2
E
9
0.2
E
9
0.2
E
9
0.2
E
9
0.2
E
8
0.2
E
8
0.2
E
8
Wave Graph
Metric surfscale
Energy kJ
6
6
6
6
6
6
6
6
6
6
6
5
5
5
5
5
5
6
6
6
6
6
5
5
Wind (km/h)
15
SW
10
WSW
10
SW
10
SSW
20
SSE
25
S
15
S
10
S
20
S
20
S
15
S
10
SSW
20
SSE
20
SSE
15
SW
10
S
10
S
10
S
5
SW
5
SE
15
SE
20
SE
15
SSE
10
SSE
Wind State
cross-off
cross-off
cross-off
cross-off
cross
cross
cross
cross
cross
cross
cross-off
cross-off
cross-on
cross-on
cross-off
cross
cross
cross
glassy
glassy
cross-on
cross-on
cross-on
cross
High Tide
2:10AM0.69m
3:11PM0.71m
3:05AM0.66m
4:14PM0.70m
4:07AM0.65m
5:15PM0.71m
Low Tide
8:36AM0.13m
9:13PM0.28m
9:34AM0.16m
10:18PM0.30m
10:35AM0.16m
thunderstorm
thunderstorm
clear
part cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
part cloud
part cloud
clear
clear
part cloud
thunderstorm
thunderstorm
thunderstorm
clear
clear
clear
clear
clear
clear
clear
thunderstorm
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:54
6:54
6:56
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:52
7:51
7:50
 mm
1
1
1
3
3
5
2
3
2
4
Temp °C
29
29
29
30
31
31
31
30
29
29
29
30
30
30
30
29
29
29
28
29
30
30
30
30
Feels °C
32
33
33
33
32
32
34
33
31
31
32
34
32
32
33
32
32
32
32
33
33
31
32
32
  • 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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