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Surf Forecasts:

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

information circle16 Day Weather and Surf, issued 1 pm Tuesday 17 Mar 2026 EDT
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
26.0° C
 (Which is 2.3°C warmer than normal for this time of year)

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

The surf forecast for 21st Street (Miami) over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Mar 22) at 5AM. The primary swell is predicted to be 0.9m and 10s period with a secondary swell of 0.3m and 9s. Another secondary swell of 0.5m and 9s is also forecast. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at 21st Street (Miami) in the next 16 days are 2.0m 7s and forecast to arrive on Tuesday (Mar 17) at 8PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 4s period and expected on Monday (Mar 23) at 5PM.

Wave TypeTime (EDT) & Date Wave Height & Period
Next good surf (1 star+) 5AM (Sun 22nd Mar)3ft (0.9m) 10s
Best Surf 5AM (Sun 22nd Mar)3ft (0.9m) 10s
Most Powerful 8PM (Tue 17th Mar)6.5ft (2.0m) 7s

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

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

Short Range Forecast Light rain (total 7mm), mostly falling on Tue afternoon. Warm (max 22°C on Fri morning, min 16°C on Tue night). Mainly fresh winds.

Days 3-6 Weather Summary Mostly dry. Warm (max 23°C on Sat afternoon, min 21°C on Fri afternoon). Winds decreasing (fresh winds from the NE on Fri afternoon, calm by Sat night).

Tue
17
Wednesday
18
Thursday
19
Friday
20
Saturday
21
Sunday
22
Monday
23
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
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 (?)
1.8
NNE
1.7
NNE
1.4
NE
1.6
NE
1.9
NE
1.7
NE
1.6
NNE
1.3
NNE
2.1
NNE
1.6
NNE
0.8
NE
0.9
NNE
1.1
NE
0.9
NNE
0.9
NE
0.7
NE
0.6
NE
0.5
NE
0.4
NE
0.4
NE
0.3
NE
Period(s) (?)77666666779991010999999
Wave
Graph
(?)Metric surfscale
Energy kJ (?)31727015215926921617712739724391129190161134866841282012
Wind
(km/h)
35
NNE
30
NNE
30
NE
35
NNE
30
NE
35
NNE
35
NE
25
NNE
25
NNE
30
NE
20
NNE
15
NE
20
E
10
ESE
10
E
15
E
15
ESE
15
ESE
15
ESE
10
ESE
10
ENE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
crosscross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		crosscross-
on		cross-
on		cross-
on		oncross-
on		ononcross-
on		cross-
on		oncross-
on		on
High Tide
/ height (m)
8:11PM
0.80
8:30AM
0.80
8:54PM
0.85
9:09AM
0.83
9:37PM
0.88
9:48AM
0.84
10:21PM
0.89
10:30AM
0.84
11:08PM
0.88
11:15AM
0.81
11:59PM
0.84
12:04PM
0.77
12:55AM
0.79
1:01PM
0.73
Low Tide
/ height (m)
2:01PM
-0.05
2:22AM
-0.08
2:40PM
-0.11
3:04AM
-0.09
3:20PM
-0.16
3:46AM
-0.09
4:02PM
-0.18
4:29AM
-0.08
4:46PM
-0.18
5:15AM
-0.04
5:33PM
-0.16
6:05AM
0.01
6:26PM
-0.12
7:02AM
0.06
Tue
17
Wednesday
18
Thursday
19
Friday
20
Saturday
21
Sunday
22
Monday
23
Sunrise--7:26--7:24--7:24--7:22--7:22--7:20--7:20
Sunset7:30--7:30--7:30--7:30--7:31--7:31--7:31--
light rain
light rain
light rain
cloud
light rain
cloud
part cloud
part cloud
part cloud
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
Rain (mm)
321-1----------------
Temp. °C181920202020212122222222232223232222232223
Feels °C (?)131516161615151518171719211922202022222023
  • 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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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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