Surf Forecasts:
21st Street (Miami) surf forecast from 23 Jul 2026:
- Most powerful swell: Friday 24 Jul, 2AM (local time) - 3ft (0.9m), 4s period, ENE swell with 34 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 0.9m 4s and forecast to arrive on Friday (Jul 24) at 2AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 4s period and expected on Wednesday (Jul 29) at 8PM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 2AM (Fri 24th Jul) | 3ft (0.9m) 4s |
Table - best surf conditions forecast for 21st Street (Miami) over the next 16 days.
The Lowdown
Alright surfers, Rusty here. This is a tough one to call. We’re looking at a 16-day stretch for the Miami area, and honestly, the ocean is just not playing ball. There are no good surf options on the table for the entire forecast period. You’re looking at a solid run of blank days.
The first possible window, July 23rd, shows practically nothing. We’ve got tiny, poor quality swell with a combined wave energy of only 18 (weak). The wind is cross-on from the ENE at 12 mph, and it’s just choppy. It’s a write-off. The waves are barely ankle-high.
Things don’t improve as we move through the next two weeks. The swell heights stay mostly below 2 ft, and the period is often short, around 4 to 8 seconds. The combined energy readings are all two-digit numbers, indicating weak wave energy. Even when we get a few cleaner moments, like on the 26th and 27th with a light cross-off breeze, the swell is just too small (0.7 ft to 1 ft) to hold any shape. The conditions are clean, but there is literally nothing to ride.
Further into the first week of August, the pattern remains the same. We see a tiny uptick in combined energy to 33 on August 1st, and even a clean offshore wind on August 3rd, but the swell is still flat at 1 ft to 1 ft. It’s all wind and no wave. For a break like 21st Street (Miami), which is a fairly exposed beach break, this kind of flat spell is more normal than unusual. The swell direction is mostly from the east, but it’s just not enough to get anything going.
This setup is a total washout for paddle surfing. You’d be better off taking the board in for a repair or checking the forecast for a completely different region. For now, the ocean is flat, and that’s all there is to it.
Rusty.
Short Range ForecastLight rain (total 9mm), mostly falling on Fri night. Warm (max 29°C on Wed night, min 28°C on Thu night). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 33mm), heaviest during Sun night. Warm (max 31°C on Sun afternoon, min 26°C on Sun night). Wind will be generally light. | ||||||||||||||||||
Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | Monday 27 | Tuesday 28 | ||||||||||||||
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 4 | E 4 | E 4 | ENE 4 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | S 3 | E 8 | E 8 | E 8 | E 8 |
Wave Graph  | |||||||||||||||||||
 kJ | 6 | 11 | 12 | 34 | 10 | 11 | 31 | 11 | 10 | 10 | 10 | 11 | 5 | 5 | 8 | 5 | 5 | 5 | 5 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | cross-on | on | cross-on | cross-on | on | cross-on | cross-on | cross | cross-off | cross | off | cross-off | cross | cross-off | cross-off | cross | cross-off |
High Tide | 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 | 8:02AM0.69m | 8:43PM0.78m | |||||||
Low Tide | 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 | 2:17PM-0.01m | 2:49AM0.10m | ||||||
 |  | |  | |  | | | |  | |  | | | | |  | | | |
 | — | 6:41 | — | — | 6:41 | — | — | 6:43 | — | — | 6:43 | — | — | 6:43 | — | — | 6:43 | — | — |
 | 8:10 | — | 8:10 | — | — | 8:10 | — | — | 8:09 | — | — | 8:09 | — | — | 8:08 | — | — | 8:08 | — |
mm | — | 1 | — | 2 | 1 | — | 3 | 2 | — | 5 | — | 2 | 16 | 1 | 1 | 7 | — | 1 | 2 |
Temp °C | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 31 | 28 | 29 | 31 | 30 | 29 | 30 | 30 |
Feels °C | 30 | 31 | 30 | 29 | 32 | 31 | 31 | 32 | 31 | 32 | 32 | 33 | 30 | 32 | 34 | 32 | 31 | 31 | 31 |
Swell 1 Height (m) Direction Period (s) | SSE 5 | E 8 | E 8 | NE 9 | E 8 | E 8 | NE 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | S 3 | E 8 | NNE 6 | SSW 4 |
| kJ | 4 | 5 | 5 | 3 | 10 | 11 | 3 | 10 | 10 | 10 | 10 | 11 | 5 | 5 | 5 | 1 | 5 | 4 | 4 |
Swell 2 Height (m) Direction Period (s) | E 8 | SSE 4 | — | — | NE 4 | NNE 4 | NE 4 | NE 8 | NE 8 | NE 8 | NE 8 | NE 8 | S 3 | NE 8 | NE 8 | E 8 | NE 6 | E 8 | E 8 |
| kJ | 5 | 2 | — | — | 4 | 1 | 1 | 3 | 3 | 2 | 3 | 3 | 1 | 3 | 3 | 5 | 2 | 5 | 5 |
Swell 3 Height (m) Direction Period (s) | N 9 | N 9 | N 9 | — | NE 9 | NE 9 | NE 4 | NE 8 | NE 8 | — | — | — | NE 8 | — | — | NE 7 | — | E 8 | NNE 6 |
| kJ | 2 | 2 | 1 | — | 3 | 3 | 1 | 3 | 3 | — | — | — | 3 | — | — | 2 | — | 1 | 4 |
Wind waves Height (m) Direction Period (s) | E 4 | E 4 | E 4 | ENE 4 | ESE 4 | ESE 4 | E 8 | SE 4 | SE 4 | SSE 4 | SSW 2 | S 3 | — | — | S 3 | SW 3 | SSW 3 | S 3 | SW 4 |
| kJ | 6 | 11 | 12 | 34 | 6 | 5 | 31 | 11 | 8 | 4 | 1 | 3 | — | — | 8 | 2 | 1 | 5 | 7 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 289 | 289 | 923 | 448 | 338 | 338 | 338 | 232 | 359 | 234 | 234 | 234 | 234 | 353 | 327 | 731 | 1192 | 314 | 1149 |
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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