Surf Forecasts:
21st Street (Miami) surf forecast from 7 Sep 2026:
- Most powerful swell: Wednesday 9 Sep, 8PM (local time) - 2.5ft (0.8m), 8s period, NNE swell with 86 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 0.8m 8s and forecast to arrive on Wednesday (Sep 09) at 8PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.2m 3s period and expected on Monday (Sep 07) at 8AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 8PM (Wed 9th Sep) | 2.5ft (0.8m) 8s |
Table - best surf conditions forecast for 21st Street (Miami) over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's take a look at what's on the menu for the Miami area over the next couple of weeks.
Right off the bat, I gotta be straight with you: it's looking pretty flat out there. We've got a big old gap of nothing from right now all the way through to the end of the forecast period. There are no good surf options on offer, so if you're in town, maybe plan for a paddleboard session or just enjoy the beach, because the waves for surfing are a no-go.
The only spot with any data is 21st Street (Miami), and it's an inconsistent spot that rarely breaks well. For the whole 16-day window, the swell is tiny, mostly around 0.7 ft to 3 ft, with very weak energy. The wind is almost always onshore or cross-onshore, which is a real bummer, churning up what little bump there is into a messy chop. There's a brief moment on Tuesday morning, September 8th, where the wind goes glassy, but with only 0.7 ft of swell, it's still not even worth a longboard. The water is a touch warmer than normal at 88°, but that's not going to help the waves.
The forecast shows a slight uptick in size around Wednesday, September 9th, with 2 ft to 3 ft from the NNE, but it's accompanied by a cross-onshore wind that kills any chance of a clean wave. The swell direction of NNE does match the optimum for the break, but with that wind and tiny size, it's a total non-starter. The rest of the window is just more of the same: tiny, weak, and blown out. There's nothing to get excited about.
For this area, a blank run like this is pretty normal. It can stay flat for a while, but forecasts can change, so keep an eye on it. For now, there's just nothing to recommend.
Rusty
Short Range ForecastModerate rain (total 15mm), heaviest on Mon night. Warm (max 31°C on Mon afternoon, min 28°C on Mon morning). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 3mm), mostly falling on Thu night. Warm (max 30°C on Thu afternoon, min 29°C on Thu morning). Wind will be generally light. | ||||||||||||||||||||
Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | |||||||||||||||
AM | PM | 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 8 | E 8 | E 8 | NNE 7 | NNE 9 | NNE 8 | NE 8 | NNE 8 | NNE 8 | NNE 7 | NE 7 | NE 7 | NE 7 | SE 4 | ESE 4 | ESE 4 | ESE 4 | SE 4 | E 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 5 | 5 | 5 | 5 | 5 | 9 | 43 | 78 | 64 | 52 | 41 | 37 | 24 | 12 | 7 | 7 | 8 | 12 | 9 | 8 | 6 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | cross-off | glassy | cross-on | on | cross-on | on | on | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on | on | on | cross-on | cross-on | cross-on |
High Tide | 6:12PM0.90m | 6:27AM0.89m | 7:06PM0.94m | 7:24AM0.95m | 7:54PM0.98m | 8:15AM0.99m | 8:39PM1.00m | 9:02AM1.02m | 9:21PM1.00m | 9:47AM1.02m | 10:00PM0.98m | 10:29AM1.00m | 10:38PM0.95m | ||||||||
Low Tide | 11:45AM0.07m | 00:21AM0.16m | 12:45PM0.04m | 1:16AM0.09m | 1:39PM0.02m | 2:05AM0.04m | 2:28PM0.01m | 2:50AM0.01m | 3:13PM0.02m | 3:32AM-0.01m | 3:55PM0.05m | 4:13AM0.00m | 4:36PM0.10m | 4:52AM0.03m | |||||||
 | |  |  |  | | | |  | | | | | | | | |  | |  | | |
 | 7:01 | — | — | 7:03 | — | — | 7:03 | — | — | 7:03 | — | — | 7:03 | — | — | 7:03 | — | — | 7:05 | — | — |
 | — | 7:32 | — | — | 7:31 | — | — | 7:30 | — | — | 7:30 | — | — | 7:29 | — | — | 7:28 | — | — | 7:27 | — |
mm | 2 | 2 | 5 | — | — | 5 | — | — | 1 | — | — | 1 | 1 | — | 1 | — | — | — | — | 1 | 3 |
Temp °C | 30 | 31 | 30 | 29 | 30 | 30 | 29 | 30 | 29 | 29 | 30 | 29 | 29 | 30 | 29 | 29 | 30 | 29 | 29 | 30 | 29 |
Feels °C | 34 | 33 | 32 | 34 | 32 | 33 | 32 | 33 | 32 | 32 | 33 | 32 | 31 | 33 | 32 | 31 | 33 | 31 | 31 | 32 | 31 |
Swell 1 Height (m) Direction Period (s) | E 8 | E 8 | E 8 | NE 10 | NE 11 | NNE 7 | NNE 9 | NNE 8 | NE 8 | NNE 8 | NNE 8 | NNE 7 | NE 7 | NE 7 | NE 7 | NNE 6 | NE 6 | E 8 | E 9 | E 9 | E 9 |
| kJ | 5 | 5 | 5 | 4 | 4 | 9 | 43 | 78 | 64 | 52 | 41 | 37 | 24 | 12 | 7 | 4 | 2 | 5 | 6 | 6 | 6 |
Swell 2 Height (m) Direction Period (s) | S 3 | NE 9 | NE 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 7 | E 7 | E 7 | E 7 | E 8 | NE 8 | NE 8 | NE 8 | NE 9 |
| kJ | 1 | 3 | 3 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 4 | 4 | 4 | 1 | 1 | 3 | 3 | 3 | 3 |
Swell 3 Height (m) Direction Period (s) | NE 9 | NE 7 | N 10 | — | — | NE 10 | E 8 | E 8 | — | — | E 8 | E 8 | — | E 8 | NE 9 | NE 9 | NE 9 | N 6 | — | — | NE 9 |
| kJ | 3 | 2 | 2 | — | — | 4 | 5 | 5 | — | — | 5 | 5 | — | 1 | 3 | 3 | 3 | 1 | — | — | 3 |
Wind waves Height (m) Direction Period (s) | — | SE 3 | S 3 | — | SE 2 | — | ESE 3 | ESE 3 | E 4 | ESE 4 | ESE 4 | SE 4 | SE 3 | SE 4 | SE 3 | SE 4 | ESE 4 | ESE 4 | ESE 4 | SE 4 | SE 4 |
| kJ | — | 2 | 1 | — | 1 | — | 2 | 4 | 10 | 9 | 6 | 6 | 6 | 6 | 5 | 7 | 8 | 12 | 9 | 8 | 6 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 324 | 324 | 1149 | 359 | 845 | 845 | 845 | 845 | 326 | 222 | 359 | 127 | 234 | 731 | 1149 | 692 | 1642 | 841 | 448 | 1634 | 234 |
Best forecast wave conditions in South Florida | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our 21st Street (Miami) surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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.
Nearest