Surf Forecasts:
21st Street (Miami) surf forecast from 1 Sep 2026:
- Most powerful swell: Thursday 3 Sep, 11PM (local time) - 3.5ft (1.0m), 5s period, E swell with 43 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 1.0m 5s and forecast to arrive on Thursday (Sep 03) at 11PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 4s period and expected on Friday (Sep 04) at 2PM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 11PM (Thu 3rd Sep) | 3.5ft (1.0m) 5s |
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: the next 16 days are looking pretty grim for a paddle. This is one of those stretches where you might want to take up a different hobby for a while.
First up, we’ve got a real dry spell. There’s nothing on offer at all from now until the morning of Tuesday the 9th of September. That’s a solid gap with no surf recommendations. The only spot in the game is 21st Street (Miami) , and it’s an inconsistent wave that rarely has much going for it.
The first real sniff of something happens on Wednesday morning, the 9th of September. A bit of NE swell pushes in at 4ft, but it’s coming straight onshore with an easterly wind. The wave energy is moderate (106), but the surf quality is still rated as poor. It’s a beach break, and with that wind, it’s going to be a mess. Honestly, this setup looks more interesting for kite surfing than paddle surfing.
The rest of the period doesn’t get much better. Thursday the 10th and Friday the 11th of September see chest-shoulder high waves (2ft to 3ft) from the NE, but again, onshore winds and short periods (6-9 seconds) mean choppy, weak conditions. The energy stays low (79-88 for Thursday, dropping to 46 for Friday). There’s a glassy moment on the morning of Sunday the 7th, but the swell is a pathetic 0.3ft – not even worth getting the board off the rack.
From Saturday the 12th onward, it all fades back to tiny, wind-affected junk. The entire window is a bust. For an area like this, a blank run isn't unusual when the conditions don't line up. Hopefully, the long-range charts will look better in a few days.
Rusty.
Short Range ForecastModerate rain (total 19mm), heaviest on Tue night. Warm (max 30°C on Tue afternoon, min 28°C on Tue morning). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 8mm), mostly falling on Sat night. Warm (max 30°C on Sun afternoon, min 28°C on Thu night). Winds decreasing (fresh winds from the SE on Thu night, calm by Sun morning). | ||||||||||||||||||
Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | ||||||||||||||
Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||
Wave Height (m) Direction Period (s) | E 8 | E 8 | E 12 | E 11 | E 10 | E 10 | ENE 5 | E 5 | ESE 4 | ESE 5 | ESE 4 | E 4 | ESE 4 | ESE 4 | E 3 | E 8 | E 8 | E 9 | E 9 |
Wave Graph  | |||||||||||||||||||
 kJ | 10 | 10 | 11 | 37 | 33 | 17 | 33 | 24 | 28 | 38 | 16 | 7 | 9 | 5 | 3 | 1 | 2 | 2 | 2 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | cross-on | on | cross-on | on | on | cross-on | on | cross-on | on | on | on | on | cross-on | cross-on | glassy | cross-on | cross-off |
High Tide | 11:11PM0.89m | 11:48AM0.91m | 11:53PM0.87m | 12:39PM0.88m | 00:42AM0.84m | 1:37PM0.85m | 1:40AM0.81m | 2:44PM0.83m | 2:50AM0.79m | 3:57PM0.83m | 4:07AM0.80m | 5:09PM0.85m | |||||||
Low Tide | 5:27AM0.01m | 5:53PM0.14m | 6:13AM0.02m | 6:42PM0.19m | 7:07AM0.05m | 7:41PM0.23m | 8:09AM0.08m | 8:50PM0.25m | 9:21AM0.10m | 10:06PM0.25m | 10:35AM0.10m | 11:18PM0.21m | |||||||
 |  |  | | | | | | | |  | |  | | | | | | | |
 | — | 7:00 | — | — | 7:00 | — | — | 7:01 | — | — | 7:01 | — | — | 7:01 | — | — | 7:01 | — | — |
 | 7:40 | — | 7:39 | — | — | 7:38 | — | — | 7:37 | — | — | 7:37 | — | — | 7:36 | — | — | 7:34 | — |
mm | 1 | 2 | — | 6 | 1 | 1 | 1 | 4 | 3 | 1 | — | 1 | — | — | — | 5 | — | 1 | 7 |
Temp °C | 29 | 29 | 30 | 29 | 29 | 30 | 29 | 29 | 29 | 29 | 29 | 29 | 28 | 29 | 29 | 29 | 29 | 30 | 30 |
Feels °C | 31 | 33 | 33 | 32 | 33 | 34 | 31 | 31 | 31 | 29 | 31 | 31 | 30 | 32 | 31 | 31 | 33 | 32 | 33 |
Swell 1 Height (m) Direction Period (s) | E 8 | E 8 | E 8 | E 11 | E 10 | E 10 | E 10 | E 5 | NE 9 | E 9 | E 8 | SSE 4 | E 8 | E 8 | SSE 3 | E 8 | E 8 | E 8 | E 9 |
| kJ | 10 | 10 | 10 | 37 | 33 | 17 | 16 | 24 | 3 | 6 | 5 | 6 | 5 | 1 | 1 | 1 | 1 | 1 | 2 |
Swell 2 Height (m) Direction Period (s) | NE 4 | NE 4 | E 12 | NE 9 | NE 11 | NE 11 | NE 10 | E 9 | NE 9 | NE 9 | NE 9 | E 8 | NE 8 | E 8 | E 8 | — | — | NE 7 | NE 8 |
| kJ | 1 | 1 | 11 | 3 | 5 | 4 | 4 | 14 | 3 | 3 | 3 | 5 | 3 | 1 | 1 | — | — | 2 | 2 |
Swell 3 Height (m) Direction Period (s) | NE 8 | NE 8 | NE 4 | NE 12 | NE 11 | N 6 | — | NE 9 | — | — | NE 9 | NE 8 | N 8 | — | N 8 | — | NE 7 | E 9 | NE 6 |
| kJ | 3 | 3 | 1 | 5 | 5 | 1 | — | 3 | — | — | 3 | 3 | 1 | — | 1 | — | 2 | 2 | 1 |
Wind waves Height (m) Direction Period (s) | — | — | ESE 2 | ESE 3 | E 4 | E 4 | ENE 5 | SSE 4 | ESE 4 | ESE 5 | ESE 4 | E 4 | ESE 4 | ESE 4 | E 3 | ESE 4 | — | ESE 2 | — |
| kJ | — | — | 1 | 3 | 5 | 5 | 33 | 7 | 28 | 38 | 16 | 7 | 9 | 5 | 3 | 1 | — | 1 | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 213 | 338 | 338 | 173 | 774 | 326 | 360 | 338 | 360 | 326 | 448 | 1634 | 731 | 943 | 1634 | 904 | 369 | 325 | 1167 |
Best forecast wave conditions in South Florida | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
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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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