Surf Forecasts:
21st Street (Miami) surf forecast from 9 Jul 2026:
- Most powerful swell: Friday 10 Jul, 2PM (local time) - 3ft (0.9m), 5s period, SE swell with 47 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 0.9m 5s and forecast to arrive on Friday (Jul 10) at 2PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 6s period and expected on Friday (Jul 10) at 5PM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 2PM (Fri 10th Jul) | 3ft (0.9m) 5s |
Table - best surf conditions forecast for 21st Street (Miami) over the next 16 days.
Alright folks, Rusty here. Let’s get real about the next couple of weeks. Honestly, it’s a tough stretch. The surf window is wide open but there’s almost nothing to get excited about. We’re looking at a long, flat run with barely a ripple.
Right now, through the first week, it’s pretty grim. The swell is tiny, mostly around 0.7 ft to 3 ft, and the wind is a constant problem. For 21st Street (Miami), the water temp is about average for the time of year, so no need to worry about a wetsuit, but honestly, you won’t need to paddle out either. The wave energy is weak, with readings barely cracking 50 (16) on the energy scale. It’s all short-period, onshore slop. Thursday the 9th through to Saturday the 12th is a total write-off – poor surf conditions, choppy, and cross-onshore winds. Don’t bother.
There’s a gap of several days with zero recommendations. The swell stays tiny, the wind stays on it, and the wave energy is pathetic. The 20th of July (Monday morning) shows a tiny 0.7 ft swell with glassy conditions, but it’s still just a poor surf situation. The best of a bad bunch might be Tuesday the 21st of July morning with a little 1 ft wave and a clean cross-offshore wind, but it’s just not enough to ride.
The standout? There isn’t one. Nothing here is worth paddling out for. The combined swell energy is weak (17) and the swell is too small and short-period. For a beach break like 21st Street, this is just a flat spell. It’s the kind of setup that, if you’re desperate, you might look at for a kite session, but for surfing, put the board away. Forecasts can change, but right now, this is a blank run.
Rusty.
Short Range ForecastLight rain (total 4mm), mostly falling on Sat morning. Warm (max 30°C on Fri afternoon, min 28°C on Wed night). Mainly fresh winds. | Days 5-7 Weather SummaryMostly dry. Warm (max 29°C on Sat night, min 28°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
Thursday 9 | Friday 10 | Saturday 11 | Sunday 12 | Monday 13 | Tuesday 14 | Wed 15 | |||||||||||||||
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 9 | E 9 | SE 4 | SE 5 | E 4 | ESE 5 | SE 5 | ESE 5 | SE 5 | E 4 | E 8 | SE 5 | E 8 | SE 4 | E 8 | E 8 | SSE 3 | E 8 | NNE 9 | NNE 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 16 | 6 | 6 | 19 | 40 | 9 | 40 | 25 | 7 | 20 | 5 | 5 | 13 | 5 | 6 | 5 | 5 | 7 | 6 | 8 | 40 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | on | cross-on | cross-on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross-on | cross-on | cross-on | cross-on | glassy | cross-on | on |
High Tide | 3:31AM0.71m | 4:32PM0.74m | 4:33AM0.73m | 5:35PM0.78m | 5:36AM0.75m | 6:36PM0.83m | 6:38AM0.79m | 7:33PM0.87m | 7:38AM0.82m | 8:27PM0.90m | 8:35AM0.85m | 9:18PM0.92m | 9:30AM0.87m | ||||||||
Low Tide | 9:31PM0.12m | 10:00AM-0.05m | 10:36PM0.11m | 11:02AM-0.09m | 11:40PM0.09m | 12:03PM-0.13m | 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 | |||||||
 | | |  | | |  |  |  |  | | | | | | | | | | | | |
 | — | 6:35 | — | — | 6:35 | — | — | 6:35 | — | — | 6:35 | — | — | 6:37 | — | — | 6:37 | — | — | 6:37 | — |
 | 8:15 | — | 8:15 | — | — | 8:15 | — | — | 8:15 | — | — | 8:15 | — | — | 8:14 | — | — | 8:14 | — | — | 8:14 |
mm | — | — | — | — | — | — | 1 | 3 | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 29 | 28 | 29 | 29 | 29 | 30 | 29 | 28 | 29 | 29 | 28 | 29 | 28 | 28 | 29 | 28 | 28 | 29 | 29 | 29 | 29 |
Feels °C | 32 | 30 | 31 | 30 | 30 | 32 | 28 | 28 | 30 | 33 | 30 | 31 | 30 | 31 | 32 | 30 | 31 | 32 | 32 | 32 | 30 |
Swell 1 Height (m) Direction Period (s) | E 9 | SSE 5 | S 6 | E 8 | E 8 | SSE 6 | E 8 | E 8 | SSE 5 | E 8 | SSE 4 | SSE 5 | E 8 | E 4 | E 8 | E 8 | E 8 | E 8 | E 8 | NNE 8 | NNE 8 |
| kJ | 7 | 16 | 17 | 6 | 5 | 24 | 5 | 5 | 17 | 4 | 8 | 9 | 5 | 1 | 5 | 5 | 5 | 5 | 6 | 6 | 40 |
Swell 2 Height (m) Direction Period (s) | NE 10 | E 9 | E 9 | NE 9 | NE 9 | E 8 | NE 10 | NE 9 | E 8 | NNE 8 | E 4 | E 8 | N 7 | E 8 | NE 9 | NE 9 | NE 9 | N 9 | NE 8 | NNE 9 | E 8 |
| kJ | 4 | 6 | 6 | 3 | 3 | 5 | 4 | 3 | 5 | 6 | 5 | 5 | 1 | 5 | 3 | 3 | 3 | 2 | 3 | 8 | 5 |
Swell 3 Height (m) Direction Period (s) | — | NE 10 | NE 10 | — | N 11 | NE 9 | — | NE 9 | NNE 8 | — | E 8 | NE 8 | NE 9 | NE 9 | N 9 | — | N 9 | — | N 8 | E 8 | — |
| kJ | — | 4 | 4 | — | 2 | 3 | — | 3 | 7 | — | 5 | 2 | 3 | 3 | 2 | — | 2 | — | 1 | 6 | — |
Wind waves Height (m) Direction Period (s) | SE 4 | E 4 | E 3 | SE 4 | SE 5 | E 4 | ESE 5 | SE 5 | ESE 5 | SE 5 | — | E 4 | SE 5 | SE 4 | SE 4 | SE 4 | SE 3 | SSE 3 | SE 3 | SE 4 | SE 3 |
| kJ | 16 | 6 | 3 | 19 | 40 | 9 | 40 | 25 | 7 | 20 | — | 3 | 13 | 4 | 6 | 5 | 2 | 7 | 3 | 3 | 4 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 256 | 234 | 1562 | 256 | 326 | 1421 | 394 | 338 | 1634 | 448 | 314 | 314 | 327 | 941 | 448 | 845 | 448 | 1634 | 234 | 229 | 1137 |
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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