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Surf Forecasts:

21st Street (Miami) surfForecast / Florida – South / USA

information circle12 Day Weather and Surf, issued 6 am Sunday 18 Jan 2026 EST
Forecast update in hr  min  s Forecast update imminent
21st Street (Miami) surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's 21st Street (Miami) sea temperature is
23.8° C
 (Which is slightly warmer than usual)

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

The surf forecast for 21st Street (Miami) over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Jan 22) at 7PM. The primary swell is predicted to be 0.7m and 9s period with a secondary swell of 0.8m and 7s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at 21st Street (Miami) in the next 12 days are 2.1m 7s and forecast to arrive on Wednesday (Jan 21) at 10AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 3s period and expected on Sunday (Jan 18) at 7PM.

Wave TypeTime (EST) & Date Wave Height & Period
Next good surf (1 star+) 7PM (Thu 22nd Jan)2.5ft (0.7m) 9s
Best Surf 7PM (Thu 22nd Jan)2.5ft (0.7m) 9s
Most Powerful10AM (Wed 21st Jan)7ft (2.1m) 7s

Table - best surf conditions forecast for 21st Street (Miami) over the next 12 days.

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table

Short Range Forecast Light rain (total 3mm), mostly falling on Sun afternoon. Warm (max 26°C on Sun afternoon, min 11°C on Sun night). Winds increasing (light winds from the SSW on Sun morning, fresh winds from the NE by Tue night).

Days 3-6 Weather Summary Moderate rain (total 16mm), heaviest on Fri afternoon. Warm (max 24°C on Thu afternoon, min 21°C on Wed morning). Winds decreasing (fresh winds from the ENE on Wed morning, calm by Thu afternoon).

Sunday
18
Monday
19
Tuesday
20
Wednesday
21
Thursday
22
Friday
23
Saturday
24
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
0.4
E
0.3
E
1.1
N
1.4
N
1.6
NNE
1.2
NNE
1.2
NNE
1.4
NE
2.1
NE
2.1
ENE
1.9
ENE
1.6
ENE
0.9
E
0.7
E
0.7
NE
0.5
E
1.1
NE
1.5
NE
1
NE
0.8
NNE
0.8
NNE
Period(s) (?)8666665567769981056677
Wave
Graph
(?)Metric surfscale
Energy kJ (?)21674139182967510233140133519712778704762172805666
Wind
(km/h)
15
SSW
25
W
25
NNW
30
N
30
NNE
20
NNE
25
NNE
30
NE
35
NE
35
ENE
30
NE
20
E
15
ESE
10
SE
10
NNE
25
NE
25
NE
20
ENE
20
ESE
10
ESE
5
SE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off		offcross-
off		crosscross-
on		crosscross-
on		cross-
on		cross-
on		cross-
on		cross-
on		ononcross-
on		crosscross-
on		cross-
on		oncross-
on		cross-
on		cross-
on
High Tide
/ height (m)
7:55PM
0.69
8:33AM
0.77
8:37PM
0.71
9:09AM
0.77
9:18PM
0.73
9:45AM
0.77
10:01PM
0.73
10:23AM
0.75
10:46PM
0.73
11:03AM
0.74
11:36PM
0.73
11:48AM
0.72
12:30AM
0.71
Low Tide
/ height (m)
2:02PM
0.05
2:09AM
-0.08
2:39PM
0.02
2:49AM
-0.08
3:17PM
-0.01
3:29AM
-0.07
3:55PM
-0.03
4:10AM
-0.05
4:35PM
-0.05
4:54AM
-0.02
5:20PM
-0.06
5:42AM
0.01
6:08PM
-0.07
Sunday
18
Monday
19
Tuesday
20
Wednesday
21
Thursday
22
Friday
23
Saturday
24
Sunrise7:07--7:07--7:07--7:07--7:07--7:07--7:07--
Sunset-5:52--5:53--5:53--5:54--5:55--5:57--5:57-
thunderstorm
rain showers
clear
part cloud
part cloud
part cloud
clear
clear
part cloud
cloud
part cloud
rain showers
part cloud
light rain
thunderstorm
thunderstorm
thunderstorm
thunderstorm
clear
clear
clear
Rain (mm)
12---------4-12144---
Temp. °C252618151818202121212223232424232223232323
Feels °C (?)25231491314151517171922242726222023232425
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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View detailed surf forecast for 21st Street (Miami) at:
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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 12 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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