Nazare Big Wave Challenge Gets Yellow Alert, Could Run Saturday in Giant Waves
70-foot plus waves predicted for Portuguese big wave tow surfing competition.
- Forecast
- Maps
- Live
- Weather State
- Spot Information
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 6 pm Saturday 13 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 1.4°C warmer than normal for this time of year)Best Forecast Surf Conditions for 21st Street (Miami) this week:
The most powerful waves expected at 21st Street (Miami) in the next 12 days are 3.0m 9s and forecast to arrive on Monday (Dec 15) at 1PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 5s period and expected on Sunday (Dec 14) at 7AM.
| Wave Type | Time (EST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 1PM (Mon 15th 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 Heavy rain (total 29mm), heaviest during Sat night. Warm (max 24°C on Sat afternoon, min 20°C on Mon afternoon). Winds increasing (calm on Sun afternoon, strong winds from the ENE by Mon morning). | Days 3-6 Weather Summary Mostly dry. Warm (max 25°C on Fri morning, min 21°C on Tue afternoon). Wind will be generally light. | ||||||||||||||||||||||
Sat 13 | Sunday 14 | Monday 15 | Tuesday 16 | Wednesday 17 | Thursday 18 | Friday 19 | |||||||||||||||||
| PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | |||
Rating (10 max) | |||||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||||
| Wave Height (m) & direction (?) | |||||||||||||||||||||||
| Period(s) (?) | 4 | 5 | 5 | 9 | 4 | 8 | 9 | 9 | 9 | 9 | 8 | 7 | 6 | 5 | 9 | 9 | 9 | 9 | 9 | 5 | 5 | ||
Wave (?)Graph  | |||||||||||||||||||||||
 kJ (?) | 24 | 37 | 12 | 6 | 31 | 1067 | 1151 | 664 | 340 | 405 | 175 | 75 | 95 | 28 | 24 | 24 | 25 | 41 | 41 | 56 | 74 | ||
Wind (km/h) | |||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | on | cross | glass | glass | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | on | on | on | on | on | on | cross- on | cross- on | cross- on | cross- on | on | ||
High Tide / height (m) | 4:07AM 0.76 | 4:08PM 0.73 | 4:57AM 0.77 | 4:52PM 0.73 | 5:42AM 0.79 | 5:35PM 0.73 | 6:24AM 0.81 | 6:15PM 0.74 | 7:04AM 0.83 | 6:54PM 0.74 | 7:42AM 0.84 | 7:34PM 0.74 | 8:20AM 0.84 | ||||||||||
Low Tide / height (m) | 9:42PM 0.12 | 10:10AM 0.23 | 10:30PM 0.10 | 11:00AM 0.23 | 11:13PM 0.08 | 11:46AM 0.22 | 11:54PM 0.05 | 12:28PM 0.20 | 12:33AM 0.03 | 1:08PM 0.19 | 1:12AM 0.02 | 1:47PM 0.17 | 1:50AM 0.01 | ||||||||||
Sat 13 | Sunday 14 | Monday 15 | Tuesday 16 | Wednesday 17 | Thursday 18 | Friday 19 | |||||||||||||||||
| Sunrise | - | - | 6:58 | - | - | 6:58 | - | - | 6:58 | - | - | 7:00 | - | - | 7:00 | - | - | 7:01 | - | - | 7:01 | ||
| Sunset | 5:30 | - | - | 5:30 | - | - | 5:30 | - | - | 5:31 | - | - | 5:31 | - | - | 5:31 | - | - | 5:32 | - | - | ||
 |  |  |  |  |  | | | | |  | |  |  | | | | | | | | |||
Rain (mm) | - | 22 | - | 5 | - | 1 | 1 | - | - | - | - | - | - | - | - | - | - | - | - | 1 | - | ||
| Temp. °C | 24 | 22 | 24 | 24 | 24 | 21 | 20 | 21 | 21 | 21 | 23 | 23 | 23 | 24 | 24 | 24 | 24 | 25 | 25 | 24 | 24 | ||
| Feels °C (?) | 22 | 21 | 26 | 26 | 24 | 15 | 15 | 17 | 17 | 17 | 20 | 20 | 20 | 23 | 22 | 24 | 25 | 24 | 24 | 22 | 22 | ||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Latest Updates
Buy Less, Surf More This Black Friday
Surf-forecast is providing a free, all-access pass to our premium features and 12-day forecasts all weekend.
Quiksilver Teams Up With PrimaLoft® For World’s First Thermal Layering System for a Wetsuit.
Previously used in our snow jackets for mountain conditions, PrimaLoft® technology is making its debut in the surf industry. The aim is to bring mountain-grade warmth to the waves.
Vancouver Island’s Day Of Days With Reed Platenius
Surf-Forecast recently helped the 21-year-old Canadian pro surfer and adventurer score some cold water perfection at home.
Read more
Discover more articles and updates in the Greenroom.
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our 21st Street (Miami) surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
false
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.
Nearest