Surf Forecasts:
21st Street (Miami) surf forecast from 18 Jul 2026:
- Most powerful swell: Saturday 25 Jul, 2AM (local time) - 4ft (1.2m), 5s period, ESE swell with 59 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 1.2m 5s and forecast to arrive on Saturday (Jul 25) at 2AM. 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 5s period and expected on Tuesday (Jul 21) at 11PM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 2AM (Sat 25th Jul) | 4ft (1.2m) 5s |
Table - best surf conditions forecast for 21st Street (Miami) over the next 16 days.
The Lowdown
Alright, Rusty here. Let's have a look at what's on the table for the next couple of weeks.
Well, I gotta be straight with you, it's a pretty grim outlook for the entire 16-day window. We're looking at a long stretch of just about nothing. The first solid recommendation doesn't come up until the 31st of July, so there's a big gap of no real surf to speak of from now until then.
The only spot that even gets a look-in is 21st Street (Miami). It's an inconsistent little beachbreak, and for the first week and a half, it's just a mess – small, choppy cross-onshore slop with swell heights barely cracking 3 ft. The wind is mostly from the SSE, just ruining any chance of a clean face. The water is a touch warmer than normal for this time of year at 87°, but that's small comfort when you're bobbing around in poor surf.
Eventually, on the morning of the 31st of July, we finally see a shift. The wind swings around to a cross-offshore from the SSW with a light breeze. That's a massive positive, meaning the surface will be clean. The swell is still tiny, only 2 ft from the SE, with a weak combined energy of only 38 – that's less than a hundred, so it's barely a pulse. The period is a short 4 seconds, so it'll be weak and crumbly, but at least it'll be rideable and not chopped to bits. The 1st and 2nd of August mornings also offer that same clean, cross-off wind, but the swell is even smaller, around 2 ft.
So, if you're desperate for a paddle, the morning of the 31st of July is your only real window. It's not a standout by any stretch, but a clean, tiny wave beats a choppy, tiny wave. For the rest of this stretch, I'd honestly be looking at other hobbies. The setup here is more interesting for kite surfing than paddle surfing on most days, with those strong cross-shore winds.
Rusty.
Short Range ForecastLight rain (total 3mm), mostly falling on Sat morning. Warm (max 30°C on Sun morning, min 29°C on Sat morning). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 6mm), mostly falling on Tue night. Warm (max 29°C on Tue morning, min 28°C on Tue morning). Wind will be generally light. | ||||||||||||||||||||
Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | |||||||||||||||
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) | SE 3 | SSE 4 | SE 4 | SSE 5 | SSE 5 | SE 5 | SSE 4 | SSE 4 | SSE 4 | SSE 4 | SE 5 | ESE 5 | SE 5 | SE 5 | SE 5 | ESE 4 | E 8 | E 4 | ESE 4 | ESE 4 | ESE 5 |
Wave Graph  | |||||||||||||||||||||
 kJ | 5 | 15 | 10 | 22 | 20 | 10 | 11 | 11 | 7 | 28 | 22 | 19 | 35 | 22 | 14 | 11 | 5 | 9 | 27 | 23 | 59 |
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 | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | on | cross-on | cross-on | cross-on | cross-on |
High Tide | 12:11PM0.81m | 00:33AM0.82m | 1:05PM0.77m | 1:20AM0.76m | 2:00PM0.73m | 2:09AM0.71m | 2:58PM0.69m | 3:00AM0.67m | 3:57PM0.67m | 3:53AM0.64m | 4:55PM0.67m | 4:47AM0.62m | 5:50PM0.68m | ||||||||
Low Tide | 6:20PM-0.04m | 6:50AM-0.05m | 7:12PM0.03m | 7:40AM-0.02m | 8:05PM0.10m | 8:32AM0.02m | 9:00PM0.15m | 9:26AM0.04m | 9:58PM0.19m | 10:20AM0.05m | 10:58PM0.21m | 11:13AM0.06m | 11:54PM0.21m | ||||||||
 | |  |  |  |  | | | | | |  | | | | | | | | | | |
 | 6:39 | — | — | 6:39 | — | — | 6:39 | — | — | 6:41 | — | — | 6:41 | — | — | 6:41 | — | — | 6:41 | — | — |
 | — | 8:13 | — | — | 8:13 | — | — | 8:12 | — | — | 8:12 | — | — | 8:10 | — | — | 8:10 | — | — | 8:10 | — |
mm | 2 | 1 | — | — | — | — | — | — | — | 3 | — | 3 | — | — | — | — | — | — | 1 | — | 2 |
Temp °C | 29 | 29 | 29 | 30 | 30 | 30 | 30 | 30 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 |
Feels °C | 31 | 30 | 31 | 30 | 31 | 31 | 31 | 31 | 30 | 30 | 31 | 30 | 31 | 31 | 31 | 33 | 31 | 31 | 32 | 30 | 31 |
Swell 1 Height (m) Direction Period (s) | NE 8 | E 8 | E 8 | E 5 | E 7 | E 7 | E 4 | E 7 | E 7 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | SSE 4 | S 4 | E 8 | E 8 | NE 9 |
| kJ | 2 | 1 | 1 | 7 | 1 | 1 | 1 | 1 | 4 | 5 | 4 | 1 | 1 | 5 | 5 | 5 | 3 | 1 | 4 | 5 | 3 |
Swell 2 Height (m) Direction Period (s) | E 8 | NE 8 | NE 7 | E 8 | NE 9 | NE 8 | E 8 | NE 8 | NE 8 | N 8 | — | — | N 8 | N 9 | N 9 | — | E 8 | NE 9 | NE 8 | NE 9 | NE 9 |
| kJ | 1 | 3 | 2 | 1 | 3 | 3 | 1 | 3 | 3 | 1 | — | — | 1 | 2 | 2 | — | 4 | 3 | 3 | 3 | 3 |
Swell 3 Height (m) Direction Period (s) | — | NE 9 | NE 9 | NE 9 | NE 9 | NE 9 | NE 8 | N 9 | N 8 | — | — | — | — | E 8 | — | — | — | — | — | — | — |
| kJ | — | 3 | 3 | 3 | 3 | 3 | 3 | 1 | 1 | — | — | — | — | 5 | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SE 3 | SSE 4 | SE 4 | SSE 5 | SSE 5 | SE 5 | SSE 4 | SSE 4 | SSE 4 | SSE 4 | SE 5 | ESE 5 | SE 5 | SE 5 | SE 5 | ESE 4 | E 4 | E 4 | ESE 4 | ESE 4 | ESE 5 |
| kJ | 5 | 15 | 10 | 22 | 20 | 10 | 11 | 11 | 7 | 28 | 22 | 19 | 35 | 22 | 14 | 11 | 5 | 9 | 27 | 23 | 59 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 862 | 731 | 404 | 448 | 1221 | 394 | 731 | 731 | 394 | 256 | 1634 | 250 | 394 | 731 | 234 | 360 | 461 | 232 | 234 | 338 | 222 |
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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