Surf Forecasts:
21st Street (Miami) surf forecast from 12 Jul 2026:
- Most powerful swell: Sunday 12 Jul, 5AM (local time) - 2ft (0.6m), 5s period, SE swell with 18 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 0.6m 5s and forecast to arrive on Sunday (Jul 12) at 5AM. 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 4s period and expected on Thursday (Jul 16) at 8AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 5AM (Sun 12th Jul) | 2ft (0.6m) 5s |
Table - best surf conditions forecast for 21st Street (Miami) over the next 16 days.
Alright, folks, Rusty here. Let me tell you, straight up, this forecast for 21st Street (Miami) is a tough one to write. We’re looking at a long, dry spell with nothing worth paddling out for. The entire 16-day window is a bust. From July 12th right through to July 27th, every single session is marked by poor surf conditions.
We’ve got tiny, weak waves the whole time. The biggest combined energy I see is a paltry 30 (on Wednesday the 15th), but the swell is a measly 0.3m with a short, weak period. Most days the energy is in the teens or single digits – it’s just a flat, lifeless ocean. The swell direction is all over the place and rarely lines up with the optimum NNE, so there’s no hope of that juicing anything up.
The wind is the real killer. It's almost always a cross-on or cross-shore breeze, mostly from the SSE and ESE, between 9 and 16 mph. That’s just enough to chop up the surface and ruin any tiny bump that might form. There are a few fleeting moments of glassy or clean conditions on the mornings of July 18th, 19th, and 22nd, but with wave heights of just 0.3 ft, it’s a lake, not a surf break. Even when the swell nudges up to 2 ft on the 26th, the wind is already blowing 12 mph, cross-onshore, making it a total mess.
Here’s the bottom line: there are no standout days, no hidden gems. The waves are too small to even bother with, and the wind is working against us every step of the way. It’s just one of those stretches where the area goes completely quiet. It won't stay like this forever, but for now, save the gas money and the wax. I got nothing for you.
Rusty.
Short Range ForecastMostly dry. Warm (max 30°C on Sat night, min 26°C on Mon night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 30°C on Fri afternoon, min 28°C on Tue night). Wind will be generally light. | ||||||||||||||||||||
Sunday 12 | Monday 13 | Tuesday 14 | Wednesday 15 | Thursday 16 | Friday 17 | Sat 18 | |||||||||||||||
Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | |
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||
Wave Height (m) Direction Period (s) | SE 5 | SE 4 | E 8 | E 8 | E 8 | SE 4 | E 8 | E 8 | SE 5 | SE 4 | NNE 8 | NE 7 | NE 7 | E 8 | E 8 | SSE 5 | E 8 | SE 3 | E 8 | E 8 | SSE 3 |
Wave Graph  | |||||||||||||||||||||
 kJ | 14 | 10 | 6 | 5 | 5 | 7 | 5 | 5 | 7 | 11 | 11 | 14 | 7 | 5 | 5 | 6 | 2 | 9 | 2 | 1 | 7 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | on | cross-on | cross-on | cross-on | cross-on | on | on | cross-on | on | on | on | on | cross-on | glassy | cross-on | cross-off | cross-off | cross |
High Tide | 6:38AM0.79m | 7:33PM0.87m | 7:38AM0.82m | 8:27PM0.90m | 8:35AM0.85m | 9:18PM0.92m | 9:30AM0.87m | 10:09PM0.92m | 10:24AM0.87m | 10:58PM0.90m | 11:18AM0.85m | 11:45PM0.86m | 12:11PM0.81m | ||||||||
Low Tide | 00:41AM0.05m | 1:02PM-0.16m | 1:39AM0.00m | 1:59PM-0.19m | 2:35AM-0.04m | 2:54PM-0.20m | 3:28AM-0.07m | 3:47PM-0.19m | 4:19AM-0.09m | 4:38PM-0.16m | 5:10AM-0.09m | 5:29PM-0.10m | 6:00AM-0.07m | 6:20PM-0.04m | |||||||
 | |  |  | | | | | | | | | | | | | | |  | | | |
 | — | 6:35 | — | — | 6:37 | — | — | 6:37 | — | — | 6:37 | — | — | 6:37 | — | — | 6:39 | — | — | 6:39 | — |
 | 8:15 | — | 8:15 | — | — | 8:14 | — | — | 8:14 | — | — | 8:14 | — | — | 8:14 | — | — | 8:13 | — | — | 8:13 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — |
Temp °C | 30 | 28 | 29 | 29 | 28 | 29 | 29 | 28 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 30 | 29 | 29 | 30 |
Feels °C | 33 | 31 | 32 | 34 | 32 | 32 | 34 | 31 | 31 | 30 | 31 | 31 | 31 | 32 | 31 | 30 | 32 | 31 | 31 | 31 | 30 |
Swell 1 Height (m) Direction Period (s) | NNE 8 | E 8 | E 8 | E 8 | E 8 | E 8 | SSE 3 | E 8 | E 8 | E 8 | NNE 8 | SSE 4 | NE 7 | SE 4 | NNE 7 | E 3 | SE 4 | E 8 | S 5 | — | E 8 |
| kJ | 6 | 5 | 5 | 5 | 5 | 5 | 2 | 5 | 5 | 5 | 11 | 4 | 7 | 3 | 4 | 1 | 4 | 1 | 2 | — | 1 |
Swell 2 Height (m) Direction Period (s) | E 8 | NNE 8 | NE 8 | NE 7 | NE 9 | N 9 | E 3 | N 9 | NE 9 | NE 8 | E 8 | NE 7 | E 8 | NNE 7 | E 8 | NE 7 | NE 7 | NE 7 | E 8 | E 8 | NE 8 |
| kJ | 5 | 6 | 2 | 2 | 3 | 2 | 1 | 2 | 3 | 3 | 5 | 14 | 5 | 5 | 5 | 2 | 2 | 2 | 1 | 1 | 2 |
Swell 3 Height (m) Direction Period (s) | — | NE 8 | E 4 | N 10 | N 7 | — | E 8 | N 9 | — | — | E 8 | E 8 | E 8 | E 8 | — | E 8 | E 8 | N 5 | NE 7 | — | — |
| kJ | — | 2 | 1 | 2 | 1 | — | 5 | 2 | — | — | 5 | 5 | 1 | 5 | — | 1 | 1 | 1 | 2 | — | — |
Wind waves Height (m) Direction Period (s) | SE 5 | SE 4 | SE 4 | SE 3 | SE 4 | SE 4 | — | SE 4 | SE 5 | SE 4 | SE 4 | E 4 | SE 4 | — | ESE 3 | SSE 5 | — | SE 3 | SSW 3 | SSW 3 | SSE 3 |
| kJ | 14 | 10 | 6 | 4 | 5 | 7 | — | 5 | 7 | 11 | 9 | 2 | 6 | — | 4 | 6 | — | 9 | 3 | 1 | 7 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 314 | 448 | 448 | 327 | 814 | 448 | 327 | 841 | 606 | 1032 | 448 | 1171 | 1191 | 325 | 325 | 958 | 325 | 1634 | 991 | 1563 | 448 |
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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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