Surf Forecasts:
21st Street (Miami) surf forecast from 27 Jul 2026:
- Most powerful swell: Sunday 2 Aug, 8PM (local time) - 2.5ft (0.7m), 4s period, SSE swell with 16 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 0.7m 4s and forecast to arrive on Sunday (Aug 02) at 8PM. Winds are predicted to be glassy 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 | 8PM (Sun 2nd Aug) | 2.5ft (0.7m) 4s |
Table - best surf conditions forecast for 21st Street (Miami) over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s get real about what’s heading our way.
Right off the bat, I gotta be straight with you: the next two weeks are looking pretty flat for the Miami area. We’ve got a long stretch of poor surf conditions with barely a ripple to get excited about. The first few days, from July 27th right through the end of the month, offer nothing but tiny, weak waves. The combined swell energy is stuck in the low single digits and teens, like 9 to 17, which is just sad. Winds are mostly cross-off or cross, but with swell heights around 0.7 ft to 2 ft and short periods, there’s just no power to work with.
The water temperature is sitting at 87°F, which is about 2°F warmer than normal for this time of year – nothing too crazy, just a touch of summer warmth for 21st Street (Miami).
As we roll into August, the pattern doesn’t change much. The first week of August is more of the same: tiny east and southeast swells, short periods of 4 to 8 seconds, and combined energy values mostly in the teens and low twenties. Winds are cross to onshore, which keeps things messy. For a beach break like 21st Street, this kind of weak, short-period swell just doesn’t do anything.
Now, there is a glimmer of hope if you’re patient. On Tuesday morning, August 11th, we finally see a bit of a pulse. The forecast shows a 3 ft swell from the ESE with a period of 5 seconds, and combined energy jumping to 60. The wind swings light from the SSW, making it cross-offshore and clean. It’s still not a big swell, but it’s the best looking window in the whole 16-day run. That morning is the standout. The swell direction is off the ESE, which is alright for the spot, but don’t expect perfection. The rest of that day and the days after quickly drop back down into the poor zone.
So, there you have it. A long dry spell, then one clean morning on August 11th that might just be worth a dawn patrol. The forecast is reliable for the near term, and those long-range calls are promising but less certain. Stay hopeful, and keep an eye on the sky.
Rusty.
Short Range ForecastModerate rain (total 11mm), heaviest on Mon afternoon. Warm (max 33°C on Tue afternoon, min 27°C on Mon night). Mainly fresh winds. | Days 5-7 Weather SummaryModerate rain (total 13mm), heaviest on Sat night. Warm (max 33°C on Thu night, min 28°C on Fri morning). Wind will be generally light. | |||||||||||||||||||
Mon 27 | Tuesday 28 | Wednesday 29 | Thursday 30 | Friday 31 | Saturday 1 | Sunday 2 | ||||||||||||||
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 | E 8 | E 8 | E 8 | E 8 | S 4 | NE 9 | E 10 | SSE 3 | E 9 | E 8 | E 8 | E 8 | E 8 | SE 4 | SSE 5 |
Wave Graph  | ||||||||||||||||||||
 kJ | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 12 | 3 | 2 | 6 | 6 | 6 | 5 | 12 | 5 | 7 | 9 |
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 | off | cross-off | cross | off | cross-off | cross | cross-off | cross | cross | cross-on |
High Tide | 8:05PM0.76m | 8:02AM0.69m | 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 | |||||||
Low Tide | 2:11AM0.13m | 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 | ||||||||
 |  | |  |  |  | | |  | | | |  | | | | | | | | |
 | — | — | 6:43 | — | — | 6:45 | — | — | 6:45 | — | — | 6:46 | — | — | 6:46 | — | — | 6:47 | — | — |
 | 8:08 | — | — | 8:08 | — | — | 8:07 | — | — | 8:07 | — | — | 8:07 | — | — | 8:06 | — | — | 8:06 | — |
mm | 5 | 1 | 3 | 1 | — | — | 1 | — | — | — | — | — | — | — | — | — | 8 | 5 | 3 | 2 |
Temp °C | 30 | 29 | 29 | 33 | 31 | 30 | 33 | 31 | 30 | 32 | 33 | 29 | 31 | 31 | 29 | 30 | 29 | 29 | 30 | 29 |
Feels °C | 32 | 30 | 31 | 33 | 30 | 31 | 32 | 29 | 32 | 31 | 32 | 32 | 31 | 31 | 32 | 31 | 31 | 31 | 32 | 32 |
Swell 1 Height (m) Direction Period (s) | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | SSW 4 | E 8 | E 8 | S 4 | E 7 | E 7 | S 3 | E 8 | E 8 | E 8 | E 4 | E 8 | E 8 |
| kJ | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 3 | 5 | 1 | 2 | 1 | 1 | 2 | 6 | 5 | 12 | 3 | 5 | 5 |
Swell 2 Height (m) Direction Period (s) | NE 8 | S 3 | NE 6 | NE 6 | NE 6 | NE 6 | NE 6 | E 8 | NE 6 | NE 9 | E 8 | — | E 10 | E 9 | — | NE 9 | NE 9 | E 8 | NE 8 | E 4 |
| kJ | 3 | 1 | 2 | 1 | 1 | 1 | 1 | 5 | 1 | 3 | 1 | — | 2 | 6 | — | 3 | 3 | 5 | 3 | 2 |
Swell 3 Height (m) Direction Period (s) | N 6 | NE 8 | NE 8 | NE 8 | NE 9 | NE 9 | NE 9 | NE 6 | NE 9 | N 6 | NE 9 | E 10 | NE 10 | NE 10 | NE 9 | NE 9 | NE 9 | NE 8 | NE 8 | NE 8 |
| kJ | 1 | 2 | 3 | 3 | 3 | 3 | 3 | 1 | 3 | 1 | 3 | 2 | 4 | 4 | 3 | 3 | 3 | 3 | 3 | 3 |
Wind waves Height (m) Direction Period (s) | SSW 3 | WSW 2 | — | SSW 3 | SW 3 | SW 3 | SSW 4 | WSW 3 | SW 2 | S 4 | — | S 4 | SSE 3 | SSW 3 | — | SE 3 | SSE 4 | SSE 4 | SE 4 | SSE 5 |
| kJ | 1 | 1 | — | 6 | 5 | 2 | 14 | 2 | 1 | 12 | — | 1 | 6 | 2 | — | 5 | 6 | 3 | 7 | 9 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 353 | 375 | 407 | 327 | 1149 | 353 | 327 | 369 | 841 | 369 | 1137 | 407 | 327 | 1149 | 862 | 353 | 731 | 448 | 448 | 448 |
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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