Surf Forecasts:
21st Street (Miami) surf forecast from 15 Jul 2026:
- Most powerful swell: Tuesday 21 Jul, 5PM (local time) - 2ft (0.6m), 4s period, SE 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 0.6m 4s and forecast to arrive on Tuesday (Jul 21) 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 0.4m 4s period and expected on Wednesday (Jul 22) at 2PM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 5PM (Tue 21st Jul) | 2ft (0.6m) 4s |
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 – it’s a flat spell and it’s gonna stick around for a while. We’ve got no surf worth paddling out for right now, and looking over the next 16 days, there’s nothing that changes that. The whole outlook is a long gap from now through July 30th – that’s about two weeks with no recommendations.
The only break on the radar is 21st Street (Miami). It’s an inconsistent spot anyway, and this run is a total dud. The water temp is sitting at a warm 87°, which is pretty much normal for this time of year, so at least the swim is nice.
From Wednesday morning, July 15th, through to Thursday the 30th, every session is marked as poor. You’re looking at tiny swell, mostly 0.3ft to 2ft, coming out of the NE, E, or SE with short periods of 3 to 8 seconds – barely enough to tickle a sandbar. The wave energy is weak, sitting between 4 and 30 for most of it.
Winds are mostly cross-onshore from the SE or SSE at 9 to 16 mph, so it’s choppy more often than not. There is one brief moment – Thursday morning, July 16th – where it goes glassy with calm wind, but the swell is only 1ft and from the NE with a 7-second period. It’s clean but flat.
Because the swell stays under 5ft the whole time, it’s never too big for anyone, but it’s also never surfable. The break is a beach setup, so with the tiny, weak swell and poor winds, honestly this looks more interesting for kite surfing than paddle surfing.
Forecast can always change, so don’t toss the boards in the attic, but for now, this is a long, dry run.
Stay tuned,
Rusty
Short Range ForecastLight rain (total 2mm), mostly falling on Wed night. Warm (max 30°C on Wed afternoon, min 28°C on Wed morning). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Sat afternoon. Warm (max 29°C on Sat afternoon, min 28°C on Sat morning). Wind will be generally light. | ||||||||||||||||||||
Wednesday 15 | Thursday 16 | Friday 17 | Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | |||||||||||||||
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) | NE 8 | NE 7 | NE 7 | NE 7 | NNE 7 | NNE 6 | NNE 6 | SSE 3 | SSE 3 | E 4 | SE 3 | SSE 4 | E 4 | SSE 4 | SSE 4 | E 7 | ESE 3 | E 7 | E 5 | SE 4 | SE 4 |
Wave Graph  | |||||||||||||||||||||
 kJ | 14 | 14 | 12 | 7 | 4 | 4 | 4 | 10 | 3 | 2 | 6 | 4 | 3 | 10 | 4 | 4 | 3 | 4 | 8 | 16 | 10 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | cross-off | glassy | cross-on | cross | cross-off | cross | cross-off | cross | cross-on | cross-on | cross | cross-on | cross | on | cross-on | cross-on | cross-on | cross-on | on |
High Tide | 9:30AM0.87m | 10:09PM0.92m | 10:24AM0.87m | 10:58PM0.90m | 11:18AM0.85m | 11:45PM0.86m | 12:11PM0.81m | 00:33AM0.82m | 1:05PM0.77m | 1:20AM0.76m | 2:00PM0.73m | 2:09AM0.71m | 2:58PM0.69m | 3:00AM0.67m | |||||||
Low Tide | 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 | 6:50AM-0.05m | 7:12PM0.03m | 7:40AM-0.02m | 8:05PM0.10m | 8:32AM0.02m | 9:00PM0.15m | ||||||||
 |  |  | | |  | | |  | |  | | | | | | | | | | | |
 | 6:37 | — | — | 6:37 | — | — | 6:39 | — | — | 6:39 | — | — | 6:39 | — | — | 6:39 | — | — | 6:41 | — | — |
 | — | 8:14 | — | — | 8:14 | — | — | 8:13 | — | — | 8:13 | — | — | 8:13 | — | — | 8:12 | — | — | 8:12 | — |
mm | — | — | 1 | — | — | 1 | — | — | — | — | 1 | — | — | — | — | 1 | — | — | 3 | — | — |
Temp °C | 29 | 30 | 30 | 29 | 30 | 30 | 29 | 30 | 29 | 28 | 29 | 29 | 28 | 29 | 29 | 29 | 29 | 29 | 28 | 29 | 28 |
Feels °C | 31 | 31 | 32 | 32 | 31 | 32 | 31 | 31 | 31 | 31 | 31 | 31 | 32 | 30 | 30 | 32 | 30 | 31 | 30 | 30 | 30 |
Swell 1 Height (m) Direction Period (s) | NE 8 | NE 7 | NE 7 | NE 7 | NNE 7 | NNE 6 | NNE 6 | NE 6 | E 8 | E 4 | E 8 | E 4 | E 4 | E 7 | E 7 | E 7 | E 7 | E 5 | E 5 | E 7 | E 7 |
| kJ | 14 | 14 | 12 | 7 | 4 | 4 | 4 | 1 | 1 | 1 | 1 | 1 | 3 | 1 | 1 | 4 | 1 | 2 | 8 | 4 | 4 |
Swell 2 Height (m) Direction Period (s) | E 8 | E 8 | SSE 5 | E 8 | E 8 | E 8 | E 8 | E 8 | NE 7 | E 8 | NE 8 | E 8 | E 7 | NE 9 | — | — | NE 8 | E 7 | E 7 | E 8 | E 8 |
| kJ | 5 | 5 | 2 | 5 | 1 | 1 | 1 | 1 | 2 | 1 | 3 | 1 | 1 | 3 | — | — | 3 | 4 | 4 | 1 | 1 |
Swell 3 Height (m) Direction Period (s) | — | SE 5 | E 8 | SE 5 | — | — | — | N 8 | N 5 | NE 8 | NE 9 | NE 7 | NE 9 | NE 9 | NE 8 | NE 8 | N 9 | NE 8 | E 8 | — | — |
| kJ | — | 1 | 5 | 1 | — | — | — | 1 | 1 | 2 | 3 | 2 | 3 | 3 | 3 | 3 | 1 | 3 | 1 | — | — |
Wind waves Height (m) Direction Period (s) | SE 4 | SE 3 | — | — | SE 3 | S 3 | S 3 | SSE 3 | SSE 3 | — | SE 3 | SSE 4 | SSE 4 | SSE 4 | SSE 4 | — | ESE 3 | — | SSE 3 | SE 4 | SE 4 |
| kJ | 3 | 4 | — | — | 2 | 2 | 1 | 10 | 3 | — | 6 | 4 | 1 | 10 | 4 | — | 2 | — | 1 | 16 | 10 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 448 | 324 | 1149 | 369 | 325 | 941 | 1634 | 1649 | 145 | 1634 | 731 | 236 | 728 | 353 | 448 | 692 | 377 | 427 | 500 | 731 | 236 |
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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