Surf Forecasts:
21st Street (Miami) surf forecast from 13 Jul 2026:
- Most powerful swell: Wednesday 15 Jul, 8AM (local time) - 1.5ft (0.4m), 8s period, NE swell with 15 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 0.4m 8s and forecast to arrive on Wednesday (Jul 15) at 8AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 4s period and expected on Monday (Jul 13) at 8AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 8AM (Wed 15th Jul) | 1.5ft (0.4m) 8s |
Table - best surf conditions forecast for 21st Street (Miami) over the next 16 days.
Alright, I’ve chewed through the numbers for the next couple of weeks here, and I gotta level with you—it’s a grim stretch for the Miami area. Let's break it down.
We’re staring at a long, dry spell with nothing really happening on the wave front. The first solid recommendation doesn’t show up until... well, honestly, it’s a flat run for the entire 16-day window. There are no good surf options on offer. The only spot in the mix is Twenty-First-Street, which is 21st Street (Miami), and it’s inconsistent even on a good day. The swell energy is weak across the board, with values like 8, 16, 6 (combined energy of all swells directed here)—just tiny numbers that never break triple digits. The biggest swell height we see is a meagre 2 ft on Monday afternoon the 13th, but that’s coming from the SE with a period of just 4 seconds. That’s pure wind chop, not surf. The wind is mostly a moderate cross-onshore or onshore breeze, blowing 9 to 16 mph, which just messes up what little texture there is.
Water temp is about average for this time of year in Miami—nothing unusual to report there. The water here is about 84°F, maybe a touch more, but no anomaly worth getting excited about.
For the first few days, from Monday the 13th right through to Sunday the 27th of July, every single session is flagged as “poor surf conditions.” There’s a little glassy moment on the morning of Friday the 17th—wind goes glass at 3 mph—but with a swell of only 0.3 ft from the NE and an energy reading of 3, you’d be floating. It’s a lake out there. Even the longer-period swells are absent; the max period we see is 8 seconds, and that’s just a tiny short-period wind swell.
If you’re desperate, that Friday morning glass-off might give you a chance to get wet on a foamie, but don’t expect a wave you can call your own. Crowds are possible at 21st Street when it’s on, but with nothing to ride, the beach will be empty of surfers anyway.
Given the combined energy never breaks 28 (combined energy of all swells directed here) and the wind keeps blowing cross-shore or onshore, this setup honestly looks more interesting for kite surfing than paddle surfing. The swell is too weak and choppy for a proper surf.
Bottom line: there’s nothing to recommend in this 16-day outlook. It’s a blank run, and forecasts can change, but right now, I’d hang the board up and wait for some proper groundswell to show up.
- Rusty
Short Range ForecastSome drizzle, heaviest during Mon night. Warm (max 29°C on Sun night, min 26°C on Mon night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 3mm), mostly falling on Fri night. Warm (max 29°C on Wed night, min 28°C on Thu morning). Wind will be generally light. | ||||||||||||||||||||
Monday 13 | Tuesday 14 | Wednesday 15 | Thursday 16 | Friday 17 | Saturday 18 | Sun 19 | |||||||||||||||
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 4 | E 8 | SE 4 | E 8 | E 8 | E 8 | NNE 8 | NE 8 | NE 7 | NE 7 | NE 7 | NE 7 | NNE 6 | ESE 4 | SE 3 | E 8 | E 4 | SE 3 | E 8 | E 4 | SE 3 |
Wave Graph  | |||||||||||||||||||||
 kJ | 8 | 5 | 8 | 5 | 5 | 5 | 7 | 14 | 14 | 12 | 7 | 7 | 4 | 2 | 7 | 2 | 2 | 3 | 1 | 1 | 4 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | cross-on | on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-off | glassy | cross-on | cross | cross | cross-on | cross-on | cross | cross-on |
High Tide | 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 | 00:33AM0.82m | 1:05PM0.77m | ||||||||
Low Tide | 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 | 6:50AM-0.05m | 7:12PM0.03m | |||||||
 |  | |  | | |  | | | | | |  | | | | | | | | | |
 | — | 6:37 | — | — | 6:37 | — | — | 6:37 | — | — | 6:37 | — | — | 6:39 | — | — | 6:39 | — | — | 6:39 | — |
 | 8:15 | — | 8:14 | — | — | 8:14 | — | — | 8:14 | — | — | 8:14 | — | — | 8:13 | — | — | 8:13 | — | — | 8:13 |
mm | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | 3 | — | — | — | — | — |
Temp °C | 29 | 28 | 29 | 28 | 28 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 28 | 29 | 29 | 28 | 29 |
Feels °C | 31 | 32 | 32 | 29 | 31 | 31 | 30 | 32 | 31 | 31 | 32 | 31 | 31 | 33 | 31 | 31 | 32 | 31 | 30 | 32 | 30 |
Swell 1 Height (m) Direction Period (s) | E 8 | SE 4 | E 8 | SSE 4 | SSE 3 | E 8 | NNE 8 | NE 8 | NE 7 | NE 7 | SE 3 | NE 7 | NNE 6 | SSE 4 | NE 7 | E 8 | E 4 | E 8 | E 3 | E 4 | E 8 |
| kJ | 5 | 8 | 5 | 4 | 1 | 5 | 7 | 14 | 14 | 12 | 2 | 7 | 4 | 1 | 2 | 1 | 1 | 1 | 1 | 1 | 1 |
Swell 2 Height (m) Direction Period (s) | NE 7 | E 8 | N 9 | E 8 | E 8 | NE 9 | E 8 | E 8 | E 8 | E 8 | NE 7 | E 8 | SSE 5 | ESE 4 | E 8 | — | E 8 | NE 7 | S 4 | E 8 | NE 9 |
| kJ | 2 | 5 | 2 | 5 | 5 | 3 | 5 | 5 | 5 | 5 | 7 | 1 | 2 | 1 | 1 | — | 1 | 2 | 2 | 1 | 3 |
Swell 3 Height (m) Direction Period (s) | N 10 | NE 9 | N 7 | — | E 3 | — | — | E 8 | E 8 | — | E 8 | — | E 8 | NE 7 | — | NE 7 | NE 7 | NE 7 | E 8 | — | N 10 |
| kJ | 2 | 3 | 1 | — | 1 | — | — | 5 | 5 | — | 5 | — | 1 | 2 | — | 2 | 2 | 2 | 1 | — | 2 |
Wind waves Height (m) Direction Period (s) | SE 4 | — | SE 4 | — | — | ESE 3 | SE 3 | SE 4 | SE 3 | SE 3 | — | SE 3 | SSE 3 | — | SE 3 | SSE 3 | — | SE 3 | SSE 3 | — | SE 3 |
| kJ | 8 | — | 8 | — | — | 4 | 1 | 4 | 2 | 2 | — | 6 | 2 | — | 7 | 1 | — | 3 | 1 | — | 4 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 327 | 324 | 324 | 324 | 324 | 324 | 289 | 234 | 232 | 1236 | 1634 | 1634 | 185 | 327 | 327 | 327 | 915 | 1634 | 253 | 862 | 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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