Surf Forecasts:
21st Street (Miami) surf forecast from 30 Jul 2026:
- Most powerful swell: Wednesday 5 Aug, 11AM (local time) - 3ft (0.9m), 4s period, ESE swell with 32 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 4s and forecast to arrive on Wednesday (Aug 05) at 11AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Thursday (Jul 30) at 8PM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 11AM (Wed 5th Aug) | 3ft (0.9m) 4s |
Table - best surf conditions forecast for 21st Street (Miami) over the next 16 days.
The Lowdown
Alright folks, it’s Rusty here. Let’s be straight with you – this 16-day window is a tough one for 21st Street (Miami). The models are showing very little to get excited about. There are no standout sessions where everything lines up. We’ve got a long stretch of small, weak, and often choppy conditions ahead, so patience is the name of the game.
Looking across the whole period, the first decent surf doesn’t really show until the very end. For most of the next week and a half, we’re talking tiny waves with combined swell energy barely tickling into single or low double digits, like 9 or 14, which is just flat to weak. Winds are mostly cross or cross-onshore, and while you might see a few clean windows early on, the swell just isn't there to push a rideable wave.
The water temp is sitting at a balmy 87°, which is a touch warmer than normal for late July – about 2° above average. Nothing crazy, but you'll be glad of a shortie or just boardshorts.
The most promising blip comes right at the end of the run. Wednesday morning, August 11th, we see a tiny uptick in energy. The swell direction is just about the only one this break sees any love from (NNE is the optimum), but the swell is coming from ESE, so it’s not ideal. There’s a combined energy of 48 (still weak), and a 3 ft ESE swell with a short period of 5 seconds. That’s windswell, not groundswell, so it’ll be a bit warpy and soft. Winds are moderate cross-onshore from the ESE, making it choppy. This is the only time the forecast shows a full three feet, but it’s not going to be clean. It’s really the best of a poor bunch.
Honestly, for a break that’s inconsistent at the best of times, this 16-day forecast looks more like a kiteboarding window than anything paddle-worthy. The onshore winds and small, short-period bumps just aren't going to produce anything with shape for a surfboard. We’ve got over a week of flatness to start, and even the little bump on the 11th is messy.
Hang tight, keep an eye on the charts, and maybe pick up a new hobby in the meantime.
- Rusty
Short Range ForecastLight rain (total 2mm), mostly falling on Wed afternoon. Warm (max 32°C on Wed afternoon, min 28°C on Wed night). Winds decreasing (fresh winds from the SW on Wed night, light winds from the SSW by Sat morning). | Days 5-7 Weather SummaryModerate rain (total 14mm), heaviest on Mon night. Warm (max 30°C on Sat afternoon, min 27°C on Sat night). Wind will be generally light. | |||||||||||||||||||
Wed 29 | Thursday 30 | Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | Tuesday 4 | ||||||||||||||
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) | E 8 | E 8 | NE 9 | S 4 | NE 9 | E 10 | S 3 | E 9 | E 8 | SSE 3 | E 8 | E 8 | E 8 | E 8 | ESE 4 | ESE 4 | E 5 | ESE 4 | E 8 | E 8 |
Wave Graph  | ||||||||||||||||||||
 kJ | 5 | 5 | 3 | 9 | 3 | 2 | 5 | 6 | 6 | 6 | 5 | 11 | 5 | 11 | 11 | 12 | 4 | 9 | 4 | 6 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | off | cross-off | cross | cross-off | cross-off | cross | cross-off | cross | cross | cross-on | cross | cross | cross-on | on | on | cross-on |
High Tide | 9:19PM0.80m | 9:24AM0.75m | 9:54PM0.80m | 10:04AM0.77m | 10:29PM0.80m | 10:44AM0.78m | 11:04PM0.80m | 11:26AM0.78m | 11:41PM0.79m | 12:11PM0.78m | 00:21AM0.77m | 1:01PM0.77m | 1:07AM0.76m | |||||||
Low Tide | 2:57PM-0.02m | 3:26AM0.07m | 3:36PM-0.02m | 4:02AM0.05m | 4:14PM-0.01m | 4:38AM0.03m | 4:53PM0.01m | 5:15AM0.01m | 5:33PM0.04m | 5:56AM0.00m | 6:16PM0.08m | 6:40AM-0.00m | 7:05PM0.11m | |||||||
 |  |  | |  | | | |  | |  |  | | | | | | | | | |
 | — | — | 6:45 | — | — | 6:46 | — | — | 6:46 | — | — | 6:47 | — | — | 6:47 | — | — | 6:48 | — | — |
 | 8:07 | — | — | 8:07 | — | — | 8:07 | — | — | 8:06 | — | — | 8:06 | — | — | 8:05 | — | — | 8:04 | — |
mm | 2 | — | — | — | — | — | — | — | — | — | 4 | — | — | 3 | — | — | 7 | — | — | 13 |
Temp °C | 32 | 31 | 29 | 32 | 32 | 29 | 31 | 32 | 30 | 30 | 30 | 29 | 29 | 29 | 29 | 30 | 29 | 28 | 29 | 29 |
Feels °C | 32 | 30 | 31 | 32 | 32 | 31 | 32 | 33 | 33 | 30 | 31 | 31 | 31 | 32 | 31 | 32 | 33 | 31 | 31 | 31 |
Swell 1 Height (m) Direction Period (s) | E 8 | E 8 | E 8 | E 8 | S 4 | E 7 | E 7 | S 4 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 3 | E 8 | E 8 | E 8 |
| kJ | 5 | 5 | 1 | 1 | 2 | 1 | 1 | 2 | 6 | 5 | 5 | 11 | 5 | 11 | 5 | 5 | 2 | 4 | 4 | 5 |
Swell 2 Height (m) Direction Period (s) | NE 6 | NE 6 | N 6 | NE 9 | E 8 | — | E 10 | E 9 | NE 9 | NE 9 | NE 9 | NE 8 | NE 8 | NE 8 | NE 8 | NE 8 | E 5 | NE 8 | S 4 | NE 8 |
| kJ | 1 | 1 | 1 | 3 | 1 | — | 2 | 6 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 4 | 2 | 1 | 2 |
Swell 3 Height (m) Direction Period (s) | NE 9 | NE 10 | NE 9 | N 6 | NE 9 | E 10 | NE 10 | NE 10 | — | — | — | — | — | — | NE 8 | NE 8 | SSE 4 | — | NE 8 | — |
| kJ | 3 | 4 | 3 | 1 | 3 | 2 | 4 | 4 | — | — | — | — | — | — | 3 | 3 | 2 | — | 3 | — |
Wind waves Height (m) Direction Period (s) | S 4 | SSW 4 | SSW 3 | S 4 | — | — | S 3 | NW 2 | — | SSE 3 | S 3 | SSE 2 | SE 3 | SE 4 | ESE 4 | ESE 4 | ESE 3 | ESE 4 | ESE 4 | ESE 3 |
| kJ | 27 | 5 | 1 | 9 | — | — | 5 | 1 | — | 6 | 2 | 1 | 3 | 10 | 11 | 12 | 4 | 9 | 4 | 6 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 369 | 991 | 915 | 1459 | 1043 | 1032 | 324 | 314 | 731 | 731 | 731 | 500 | 377 | 448 | 234 | 253 | 232 | 213 | 596 | 377 |
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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