Surf Forecasts:
21st Street (Miami) surf forecast from 28 Jul 2026:
- Most powerful swell: Monday 3 Aug, 11AM (local time) - 3ft (0.9m), 5s period, SE swell with 37 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 5s and forecast to arrive on Monday (Aug 03) at 11AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 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 | 11AM (Mon 3rd Aug) | 3ft (0.9m) 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 outlook for the next couple of weeks is a tough one for 21st Street (Miami). We're looking at a long stretch of flat, weak conditions with very little to get excited about.
The water temperature is a touch warmer than normal for this time of year, sitting at 87°F.
Right from the start on Tuesday, July 28th, it's a no-go. We're seeing a tiny 0.7ft swell from the east with a short period of 8 seconds. The combined energy is a weak 9, and you've got a cross-offshore wind and the risk of thunderstorms. It's just not worth the paddle out.
This pattern basically holds for the rest of the week and into the next. The swell stays tiny, rarely breaking 0.7ft, and the periods are short, mostly around 4 to 8 seconds. The combined energy values are all weak, often in the single digits or low teens. We get a mix of cross-offshore and onshore winds, and with the occasional risk of thunderstorms, it's a real bust.
There's a bit of a bump around Monday, August 3rd, where the swell picks up to 3ft from the southeast, but it's a short period of 5 seconds. The combined energy is still only moderate at 48. The wind is a cross-shore, so it won't be totally clean. It's the best of a bad bunch, but it's still poor surf.
After that, the swell drops back down again. We see a string of days with swell under 2ft, and the winds are consistently onshore or cross-onshore, making for choppy, bumpy conditions. There's a brief moment of calm, glassy conditions on the morning of Saturday, August 8th, but it's with a tiny 0.7ft swell. It's a tease, not a session.
Bottom line: This is a long, flat run. There really isn't a single standout session in the 16-day window. The setup is so weak and the winds so poor, it might be more interesting for kite surfing than paddle surfing on a few of those afternoons with a bit more wind. But for a surfboard, you're better off doing something else. Forecasts can change, but right now, it's a hard pass.
Rusty.
Short Range ForecastLight rain (total 3mm), mostly falling on Tue afternoon. Warm (max 32°C on Tue afternoon, min 27°C on Wed night). Mainly fresh winds. | Days 5-7 Weather SummaryLight rain (total 6mm), mostly falling on Sun night. Warm (max 31°C on Fri afternoon, min 28°C on Sat night). Wind will be generally light. | |||||||||||||||||||
Tue 28 | Wednesday 29 | Thursday 30 | Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | ||||||||||||||
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 | NE 9 | S 4 | NE 9 | E 10 | SSE 3 | E 9 | E 8 | E 8 | E 8 | SE 4 | SE 5 | ESE 4 | SE 5 | SE 5 | SE 5 |
Wave Graph  | ||||||||||||||||||||
 kJ | 5 | 5 | 5 | 5 | 5 | 3 | 13 | 3 | 2 | 4 | 6 | 6 | 5 | 12 | 14 | 21 | 21 | 37 | 28 | 10 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross-off | off | cross-off | cross | off | cross-off | off | cross-on | cross | cross | cross | cross | cross | cross-on |
High Tide | 8:43PM0.78m | 8:44AM0.72m | 9:19PM0.80m | 9:24AM0.75m | 9:54PM0.80m | 10:04AM0.77m | 10:29PM0.80m | 10:44AM0.78m | 11:04PM0.80m | 11:26AM0.78m | 11:41PM0.79m | 12:11PM0.78m | 00:21AM0.77m | |||||||
Low Tide | 2:17PM-0.01m | 2:49AM0.10m | 2:57PM-0.02m | 3:26AM0.07m | 3:36PM-0.02m | 4:02AM0.05m | 4:14PM-0.01m | 4:38AM0.03m | 4:53PM0.01m | 5:15AM0.01m | 5:33PM0.04m | 5:56AM0.00m | 6:16PM0.08m | |||||||
 |  |  | | |  | | | | |  | |  |  | | | | | | | |
 | — | — | 6:45 | — | — | 6:45 | — | — | 6:46 | — | — | 6:46 | — | — | 6:47 | — | — | 6:47 | — | — |
 | 8:08 | — | — | 8:07 | — | — | 8:07 | — | — | 8:07 | — | — | 8:06 | — | — | 8:06 | — | — | 8:05 | — |
mm | 1 | — | — | 2 | — | — | — | — | — | — | 1 | — | 1 | — | 1 | 1 | 2 | — | — | 1 |
Temp °C | 32 | 31 | 30 | 32 | 31 | 29 | 32 | 32 | 29 | 31 | 31 | 29 | 30 | 29 | 28 | 29 | 29 | 29 | 30 | 31 |
Feels °C | 30 | 30 | 31 | 32 | 30 | 31 | 32 | 31 | 32 | 31 | 31 | 32 | 32 | 30 | 30 | 30 | 31 | 32 | 32 | 32 |
Swell 1 Height (m) Direction Period (s) | E 8 | SSW 4 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | — | E 7 | S 3 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 |
| kJ | 5 | 3 | 5 | 5 | 5 | 1 | 1 | 1 | — | 1 | 2 | 6 | 5 | 12 | 5 | 5 | 5 | 5 | 5 | 5 |
Swell 2 Height (m) Direction Period (s) | NE 6 | E 8 | NE 6 | NE 6 | NE 6 | NE 6 | NE 9 | NE 9 | E 7 | E 10 | E 9 | NE 9 | NE 9 | NE 9 | NE 8 | NE 8 | NE 8 | NE 8 | NE 8 | NE 8 |
| kJ | 1 | 5 | 1 | 1 | 1 | 1 | 3 | 3 | 1 | 2 | 6 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 |
Swell 3 Height (m) Direction Period (s) | NE 8 | NE 6 | NE 9 | NE 9 | NE 10 | NE 9 | N 6 | N 9 | E 10 | NE 10 | NE 10 | N 5 | — | — | N 6 | N 5 | — | NE 8 | NE 8 | N 7 |
| kJ | 3 | 1 | 3 | 3 | 4 | 3 | 1 | 2 | 2 | 4 | 4 | 1 | — | — | 1 | 1 | — | 3 | 3 | 1 |
Wind waves Height (m) Direction Period (s) | S 4 | WSW 3 | SW 3 | S 4 | SSW 4 | SW 3 | S 4 | SSW 4 | — | SSE 3 | SSW 3 | — | SE 3 | SE 3 | SE 4 | SE 5 | ESE 4 | SE 5 | SE 5 | SE 5 |
| kJ | 9 | 2 | 3 | 20 | 5 | 1 | 13 | 2 | — | 3 | 4 | — | 4 | 5 | 14 | 21 | 21 | 37 | 28 | 10 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 353 | 359 | 353 | 369 | 991 | 369 | 369 | 765 | 324 | 359 | 1149 | 862 | 314 | 427 | 272 | 234 | 234 | 129 | 213 | 213 |
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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