Surf Forecasts:
21st Street (Miami) surf forecast from 4 Aug 2026:
- Most powerful swell: Friday 7 Aug, 5PM (local time) - 3.5ft (1.1m), 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 1.1m 5s and forecast to arrive on Friday (Aug 07) at 5PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 5s period and expected on Friday (Aug 07) at 8PM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 5PM (Fri 7th Aug) | 3.5ft (1.1m) 5s |
Table - best surf conditions forecast for 21st Street (Miami) over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s be honest with you right up front: the next sixteen days are a bit of a bust for surf around here. We’re looking at a long stretch of poor conditions with no real standouts to get excited about.
The only break on the radar is 21st Street (Miami), and it’s a tough watch. The pattern is flat and messy. Through the first week, we’re dealing with small, weak swell in the 0.6 ft to 4 ft range, mostly from the east and east-southeast. The period is short, sitting between 4 and 8 seconds, so there’s no real push or shape to the waves. The wind is mostly cross or onshore, often moderate to fresh, chopping up whatever tiny lumps are there. The combined swell energy barely cracks 87 (weak) for the whole period.
The water temp is about average for this time of year, so no surprises there, but it doesn’t help the wave quality. The best you’ll see is a few bumpy, wind-affected lines that will be a fight to stay on. It’s worth calling out that 21st Street is inconsistent and often crowded, so even if the conditions were halfway decent, you’d be jostling for scraps.
This is a classic blank run for this area. It doesn’t stay poor forever, but right now, there’s nothing worth paddling out for. Honestly, with the strong onshore wind and small, choppy surf, this setup looks more interesting for kite surfing than paddle surfing. The whole 16-day window is essentially a gap with no real surf on offer.
Rusty.
Short Range ForecastHeavy rain (total 21mm), heaviest during Mon night. Warm (max 30°C on Tue afternoon, min 25°C on Mon night). Wind will be generally light. | Days 5-7 Weather SummaryModerate rain (total 19mm), heaviest on Fri night. Warm (max 29°C on Thu night, min 28°C on Thu night). Wind will be generally light. | ||||||||||||||||||
Tuesday 4 | Wednesday 5 | Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | ||||||||||||||
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) | E 8 | E 8 | E 8 | ESE 8 | ESE 4 | ESE 4 | E 4 | E 5 | E 5 | E 5 | E 5 | ESE 5 | E 5 | ESE 5 | E 5 | E 5 | E 5 | ESE 5 | ESE 4 |
Wave Graph  | |||||||||||||||||||
 kJ | 10 | 10 | 4 | 19 | 10 | 9 | 15 | 34 | 27 | 37 | 45 | 59 | 43 | 41 | 23 | 34 | 36 | 28 | 43 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross-on | cross-on | cross-on | on | on | on | on | on | on | on | cross-on | cross-on | on | on | on | on | on |
High Tide | 00:21AM0.77m | 1:01PM0.77m | 1:07AM0.76m | 1:58PM0.76m | 2:01AM0.74m | 3:02PM0.75m | 3:04AM0.73m | 4:11PM0.77m | 4:13AM0.74m | 5:20PM0.79m | 5:24AM0.77m | 6:23PM0.84m | |||||||
Low Tide | 6:40AM-0.00m | 7:05PM0.11m | 7:31AM-0.00m | 8:01PM0.15m | 8:30AM-0.00m | 9:05PM0.17m | 9:35AM-0.00m | 10:15PM0.17m | 10:44AM-0.02m | 11:25PM0.14m | 11:51AM-0.05m | 00:30AM0.10m | |||||||
 |  | |  | | |  | | | | | | | | |  | | |  | |
 | — | 6:48 | — | — | 6:48 | — | — | 6:48 | — | — | 6:48 | — | — | 6:50 | — | — | 6:50 | — | — |
 | 8:05 | — | 8:04 | — | — | 8:04 | — | — | 8:02 | — | — | 8:01 | — | — | 8:01 | — | — | 8:00 | — |
mm | 12 | — | — | 5 | — | — | — | 2 | 2 | 5 | 2 | 2 | 8 | 2 | — | — | — | — | 3 |
Temp °C | 28 | 29 | 30 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 |
Feels °C | 30 | 31 | 32 | 30 | 30 | 31 | 31 | 30 | 30 | 30 | 31 | 30 | 31 | 30 | 30 | 31 | 31 | 31 | 31 |
Swell 1 Height (m) Direction Period (s) | E 8 | E 8 | E 8 | NE 8 | E 7 | E 7 | SSE 5 | NE 8 | SSE 4 | SSE 5 | NE 8 | E 8 | NE 8 | E 8 | SSE 5 | SSE 5 | E 7 | NE 8 | NE 8 |
| kJ | 10 | 10 | 4 | 2 | 4 | 4 | 4 | 2 | 2 | 2 | 2 | 10 | 11 | 11 | 14 | 5 | 9 | 3 | 3 |
Swell 2 Height (m) Direction Period (s) | NE 8 | NE 8 | NE 8 | N 8 | — | NE 8 | — | — | N 8 | N 10 | NE 8 | NE 8 | — | NE 9 | E 8 | NE 9 | NNE 8 | NNE 4 | NE 9 |
| kJ | 2 | 2 | 2 | 1 | — | 2 | — | — | 1 | 2 | 3 | 11 | — | 12 | 11 | 12 | 7 | 2 | 3 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | NE 8 | E 7 | — | — | — | — | — | NNE 9 | — | — | NE 9 | — | — | NE 9 | — |
| kJ | — | — | — | — | 2 | 4 | — | — | — | — | — | 7 | — | — | 12 | — | — | 3 | — |
Wind waves Height (m) Direction Period (s) | SSE 4 | S 3 | SE 3 | ESE 8 | ESE 4 | ESE 4 | E 4 | E 5 | E 5 | E 5 | E 5 | ESE 5 | E 5 | ESE 5 | E 5 | E 5 | E 5 | ESE 5 | ESE 4 |
| kJ | 1 | 1 | 3 | 19 | 10 | 9 | 15 | 34 | 27 | 37 | 45 | 59 | 43 | 41 | 23 | 34 | 36 | 28 | 43 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 995 | 314 | 314 | 448 | 448 | 1634 | 517 | 731 | 1634 | 461 | 862 | 338 | 938 | 731 | 1501 | 338 | 517 | 1501 | 360 |
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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