Surf Forecasts:
21st Street (Miami) surf forecast from 21 Jul 2026:
- Most powerful swell: Wednesday 22 Jul, 5PM (local time) - 2.5ft (0.8m), 5s period, SE swell with 28 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 5s and forecast to arrive on Wednesday (Jul 22) at 5PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 5s period and expected on Wednesday (Jul 22) at 8PM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 5PM (Wed 22nd Jul) | 2.5ft (0.8m) 5s |
Table - best surf conditions forecast for 21st Street (Miami) over the next 16 days.
The Lowdown
Alright, it’s a grim outlook, folks. For the next 16 days, the surf is basically a no-show. The only spot in the mix is 21st Street (Miami), and it’s struggling. The combined swell energy is tiny, topping out at 35 (35) and mostly sitting in the single or low double digits. That’s not enough to push a paper boat.
The waves are flat, all under 3 ft, with short-period wind swell from the east or southeast, periods of 4 to 8 seconds. No power, no shape. The water temp is a warm 87°F, about 2°F above average for the time of year, but that’s the only highlight.
From Tuesday, July 21st, through the end of the week, it’s all cross-onshore winds and chop. The wind is a moderate breeze from the SSE or ESE, just ruining any chance of clean surf. By Saturday, July 26th, the wind swings light and cross-offshore from the SSW, cleaning up the surface, but there’s still no swell to ride. That clean-but-flat pattern sticks around.
The second week brings a small glimmer on the morning of Tuesday, August 5th. The wind is light and glassy from the SSE, and the swell bumps up to 3 ft from the ESE with a period of 5 seconds. The combined energy hits 37 (37), the best of the whole outlook. It’s still weak, short-period slop, but for this stretch, that’s your best bet. The rest of that week is back to choppy, cross-onshore junk.
Bottom line: there’s no surf. This is a dead run, and it’s not unusual for this spot. Forecasts can change, but right now, it’s a total flat spell.
Rusty.
Short Range ForecastLight rain (total 5mm), mostly falling on Wed morning. Warm (max 29°C on Tue morning, min 28°C on Wed morning). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 27mm), heaviest during Fri night. Warm (max 30°C on Sun afternoon, min 28°C on Fri morning). Wind will be generally light. | ||||||||||||||||||||
Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | Monday 27 | |||||||||||||||
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) | SE 4 | SE 5 | ESE 3 | SE 4 | SE 5 | E 4 | E 4 | E 4 | ENE 4 | E 4 | E 8 | E 8 | E 8 | SE 5 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 29 | 17 | 8 | 21 | 28 | 14 | 12 | 8 | 17 | 16 | 11 | 12 | 10 | 14 | 10 | 10 | 5 | 5 | 5 | 5 | 5 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | cross-on | on | on | cross-on | on | on | on | cross-on | cross-on | cross-on | cross | cross-off | cross | cross-off | cross-off | cross | cross-off |
High Tide | 2:58PM0.69m | 3:00AM0.67m | 3:57PM0.67m | 3:53AM0.64m | 4:55PM0.67m | 4:47AM0.62m | 5:50PM0.68m | 5:41AM0.62m | 6:40PM0.70m | 6:31AM0.64m | 7:24PM0.73m | 7:18AM0.66m | 8:05PM0.76m | ||||||||
Low Tide | 8:32AM0.02m | 9:00PM0.15m | 9:26AM0.04m | 9:58PM0.19m | 10:20AM0.05m | 10:58PM0.21m | 11:13AM0.06m | 11:54PM0.21m | 12:04PM0.05m | 00:44AM0.19m | 12:51PM0.03m | 1:30AM0.16m | 1:35PM0.01m | 2:11AM0.13m | |||||||
 |  |  |  | |  |  | |  | | | | | | | | |  |  | | | |
 | 6:41 | — | — | 6:41 | — | — | 6:41 | — | — | 6:41 | — | — | 6:43 | — | — | 6:43 | — | — | 6:43 | — | — |
 | — | 8:12 | — | — | 8:10 | — | — | 8:10 | — | — | 8:10 | — | — | 8:09 | — | — | 8:09 | — | — | 8:08 | — |
mm | — | — | 1 | 3 | — | — | 1 | — | — | 2 | — | 6 | 3 | — | 4 | 1 | 1 | 10 | — | — | 2 |
Temp °C | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 30 | 30 | 29 | 30 | 29 |
Feels °C | 28 | 30 | 31 | 30 | 30 | 30 | 30 | 30 | 30 | 32 | 31 | 31 | 31 | 31 | 32 | 32 | 32 | 32 | 32 | 32 | 31 |
Swell 1 Height (m) Direction Period (s) | E 8 | E 8 | E 8 | E 8 | E 8 | SSE 5 | E 8 | SSE 4 | — | E 8 | E 8 | E 8 | E 4 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 |
| kJ | 5 | 4 | 4 | 4 | 5 | 8 | 5 | 2 | — | 10 | 11 | 10 | 9 | 10 | 10 | 10 | 5 | 5 | 5 | 5 | 5 |
Swell 2 Height (m) Direction Period (s) | N 8 | N 8 | — | N 8 | N 9 | N 10 | N 9 | E 8 | NE 9 | NE 9 | NNE 4 | NE 8 | E 8 | NE 8 | SSE 5 | NE 8 | NE 8 | NE 8 | NE 8 | NE 8 | NE 8 |
| kJ | 1 | 1 | — | 1 | 2 | 2 | 2 | 5 | 3 | 3 | 1 | 3 | 10 | 3 | 4 | 3 | 3 | 3 | 3 | 3 | 3 |
Swell 3 Height (m) Direction Period (s) | — | E 8 | — | — | — | — | — | N 9 | N 9 | NE 9 | NE 9 | — | NE 8 | E 4 | NE 8 | SSE 4 | — | E 8 | — | — | N 7 |
| kJ | — | 1 | — | — | — | — | — | 1 | 2 | 3 | 3 | — | 3 | 3 | 2 | 1 | — | 1 | — | — | 1 |
Wind waves Height (m) Direction Period (s) | SE 4 | SE 5 | ESE 3 | SE 4 | SE 5 | E 4 | E 4 | E 4 | ENE 4 | E 4 | ESE 4 | ESE 4 | SSE 4 | SE 5 | — | — | ESE 3 | SSE 4 | — | SSE 2 | — |
| kJ | 29 | 17 | 8 | 21 | 28 | 14 | 12 | 8 | 17 | 16 | 10 | 12 | 5 | 14 | — | — | 2 | 2 | — | 1 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 1634 | 1655 | 448 | 360 | 1283 | 289 | 289 | 379 | 338 | 338 | 338 | 232 | 213 | 359 | 234 | 234 | 324 | 375 | 359 | 327 | 915 |
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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