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21st Street (Miami) Surf Forecast
/ Florida – South (39 breaks) / Florida (155 breaks) /
Surf Forecasts:
21st Street (Miami) surfForecast / Florida – South / USA
12 Day Weather and Surf, issued 12 pm Sunday 07 Dec 2025 ESTForecast update in hr min s Forecast update imminent
21st Street (Miami) surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's 21st Street (Miami) sea temperature is
26.1° C
(Which is 1.1°C warmer than normal for this time of year)Best Forecast Surf Conditions for 21st Street (Miami) this week:
The surf forecast for 21st Street (Miami) over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Dec 08) at 7PM. The primary swell is predicted to be 0.8m and 7s period with a secondary swell of 0.2m and 9s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at 21st Street (Miami) in the next 12 days are 3.0m 9s and forecast to arrive on Sunday (Dec 14) at 7AM. Winds are predicted to be 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 Saturday (Dec 13) at 7PM.
| Wave Type | Time (EST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7PM (Mon 8th Dec) | 2.5ft (0.8m) 7s |
| Best Surf | 7PM (Sun 14th Dec) | 8ft (2.5m) 8s |
| Most Powerful | 7AM (Sun 14th Dec) | 10ft (3.0m) 9s |
Table - best surf conditions forecast for 21st Street (Miami) over the next 12 days.
Updates in hr min s Forecast update imminent
Short Range Forecast Moderate rain (total 10mm), heaviest on Sun night. Warm (max 29°C on Mon morning, min 21°C on Tue afternoon). Winds increasing (light winds from the SE on Sun morning, fresh winds from the NNE by Mon night). | Days 3-6 Weather Summary Mostly dry. Warm (max 24°C on Wed morning, min 20°C on Wed night). Wind will be generally light. | ||||||||||||||||||||
Sunday 07 | Monday 08 | Tuesday 09 | Wednesday 10 | Thursday 11 | Friday 12 | Saturday 13 | |||||||||||||||
| AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Rating (10 max) | |||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
| Wave Height (m) & direction (?) | |||||||||||||||||||||
| Period(s) (?) | 9 | 6 | 6 | 8 | 8 | 6 | 7 | 7 | 8 | 8 | 9 | 10 | 10 | 10 | 9 | 8 | 8 | 8 | 8 | 8 | 8 |
Wave (?)Graph  | |||||||||||||||||||||
 kJ (?) | 15 | 30 | 37 | 18 | 39 | 104 | 262 | 204 | 174 | 177 | 157 | 171 | 125 | 92 | 36 | 17 | 16 | 10 | 2 | 2 | 743 |
Wind (km/h) | |||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross | cross- off | cross- off | off | cross | cross- on | cross- on | on | on | on | off | cross- off | on | cross- on | on | on | glass | cross | cross- on | on |
High Tide / height (m) | 10:00PM 0.91 | 10:44AM 0.96 | 10:58PM 0.87 | 11:38AM 0.91 | 11:59PM 0.82 | 12:34PM 0.85 | 1:03AM 0.78 | 1:30PM 0.81 | 2:07AM 0.76 | 2:26PM 0.77 | 3:10AM 0.75 | 3:18PM 0.75 | |||||||||
Low Tide / height (m) | 4:01PM 0.07 | 4:18AM -0.04 | 4:56PM 0.09 | 5:14AM 0.02 | 5:54PM 0.12 | 6:12AM 0.09 | 6:53PM 0.13 | 7:13AM 0.15 | 7:52PM 0.14 | 8:15AM 0.19 | 8:49PM 0.13 | 9:15AM 0.22 | 9:42PM 0.12 | ||||||||
Sunday 07 | Monday 08 | Tuesday 09 | Wednesday 10 | Thursday 11 | Friday 12 | Saturday 13 | |||||||||||||||
| Sunrise | 6:54 | - | - | 6:54 | - | - | 6:54 | - | - | 6:56 | - | - | 6:56 | - | - | 6:56 | - | - | 6:56 | - | - |
| Sunset | - | 5:29 | - | - | 5:29 | - | - | 5:29 | - | - | 5:30 | - | - | 5:30 | - | - | 5:30 | - | - | 5:30 | - |
 | |  |  | | |  |  |  |  | |  | | | | | | | | | | |
Rain (mm) | - | - | 3 | 1 | 1 | 3 | - | 2 | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 26 | 26 | 25 | 29 | 29 | 24 | 22 | 21 | 23 | 24 | 24 | 24 | 22 | 23 | 22 | 23 | 23 | 23 | 24 | 24 | 24 |
| Feels °C (?) | 28 | 27 | 27 | 28 | 27 | 23 | 19 | 19 | 22 | 24 | 25 | 27 | 22 | 22 | 23 | 23 | 23 | 24 | 22 | 20 | 22 |
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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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 12 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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