Surf Forecasts:
How big are the waves at 21st Street (Miami) today (17 Sep):
- Morning surf: Morning surf (17 Sep, local time) - 4.5ft (1.3m), 7s period with NNE swell.
- Afternoon surf: Afternoon surf (17 Sep, local time) - 4.5ft (1.3m), 7s period with NE swell.
- Evening surf: Evening surf (17 Sep, local time) - 3.5ft (1.0m), 7s period with NNE swell.
The current surf forecast for 21st Street (Miami) at 5PM is: 1.2m 7s primary swell from a North-northeast direction and 0.5m 5s secondary swell from a East direction (forecast issued at 01:00pm September 17). An open ocean swell of 0.1m 4s is not directed at the surf break. The wind direction is predicted to be onshore.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 Sep) | 4.5ft (1.3m) | 7s |
| Afternoon (17 Sep) | 4.5ft (1.3m) | 7s |
| Evening (17 Sep) | 3.5ft (1.0m) | 7s |
Table - waves today at 21st Street (Miami). (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 22mm), heaviest during Fri afternoon. Warm (max 29°C on Thu afternoon, min 26°C on Fri afternoon). Wind will be generally light. | |||||||||||||||||||||
Thu 17 | Friday 18 | Saturday 19 | |||||||||||||||||||
11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | |
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||
Wave Height (m) Direction Period (s) | NE 7 | NE 7 | NNE 7 | NNE 7 | NNE 7 | NE 8 | NE 8 | NNE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NNE 7 | NNE 7 | NNE 7 | NNE 7 | NE 7 | NE 7 | NNE 7 | NNE 7 | NNE 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 158 | 189 | 146 | 114 | 114 | 110 | 110 | 96 | 79 | 79 | 56 | 54 | 47 | 35 | 34 | 32 | 23 | 23 | 18 | 18 | 18 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | on | cross-on | on | on | on | on | on | on | cross | cross-on | cross-on | on | cross-on | cross-on | on | on | on | on | on |
High Tide | 1:28PM0.81m | 1:24AM0.75m | 2:25PM0.78m | 2:22AM0.72m | 3:29PM0.77m | ||||||||||||||||
Low Tide | 7:32PM0.34m | 7:48AM0.23m | 8:31PM0.37m | 8:48AM0.27m | 9:39PM0.38m | ||||||||||||||||
 | |  |  |  |  | | | | |  |  | |  | | | | | | | | |
 | — | — | — | — | — | — | 7:07 | — | — | — | — | — | — | — | 7:07 | — | — | — | — | — | — |
 | — | — | 7:22 | — | — | — | — | — | — | — | 7:21 | — | — | — | — | — | — | — | 7:20 | — | — |
mm | 3 | 1 | — | — | — | 1 | — | — | 1 | 1 | 9 | 2 | — | — | — | — | — | — | — | — | 4 |
Temp °C | 28 | 28 | 29 | 29 | 29 | 28 | 28 | 28 | 29 | 28 | 26 | 26 | 27 | 27 | 27 | 27 | 28 | 29 | 29 | 29 | 29 |
Feels °C | 29 | 28 | 30 | 31 | 31 | 30 | 31 | 31 | 32 | 30 | 28 | 28 | 29 | 29 | 30 | 29 | 30 | 31 | 31 | 31 | 32 |
Swell 1 Height (m) Direction Period (s) | E 8 | E 8 | NNE 7 | NNE 7 | NNE 7 | NE 8 | NE 8 | NNE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NNE 7 | NNE 7 | NNE 7 | NNE 7 | NE 7 | NE 7 | NNE 7 | NNE 7 | NNE 7 |
| kJ | 1 | 1 | 146 | 114 | 114 | 110 | 110 | 96 | 79 | 79 | 56 | 54 | 47 | 35 | 34 | 32 | 23 | 23 | 18 | 18 | 18 |
Swell 2 Height (m) Direction Period (s) | E 8 | E 8 | SE 4 | SSE 4 | SSE 4 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | SSE 4 | SSE 4 | SE 4 | E 7 | E 7 | E 7 | E 7 | — | E 7 |
| kJ | 1 | 1 | 1 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 5 | 2 | 2 | 1 | 4 | 1 | 1 | 1 | — | 1 |
Swell 3 Height (m) Direction Period (s) | E 9 | E 8 | E 8 | E 8 | E 8 | — | E 8 | — | E 8 | — | — | — | E 8 | E 8 | E 7 | SE 4 | E 12 | E 10 | E 10 | E 7 | — |
| kJ | 1 | 1 | 1 | 1 | 1 | — | 1 | — | 1 | — | — | — | 1 | 1 | 1 | 1 | 3 | 2 | 2 | 1 | — |
Wind waves Height (m) Direction Period (s) | NE 7 | NE 7 | E 5 | E 4 | E 4 | — | SE 3 | ESE 3 | — | — | — | — | — | — | E 3 | ESE 3 | — | ESE 3 | SE 3 | — | — |
| kJ | 158 | 189 | 11 | 6 | 3 | — | 2 | 1 | — | — | — | — | — | — | 1 | 1 | — | 1 | 1 | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 292 | 292 | 292 | 731 | 923 | 338 | 338 | 292 | 292 | 292 | 915 | 60 | 74 | 92 | 92 | 359 | 1042 | 1708 | 365 | 865 | 915 |
Best forecast wave conditions in South Florida | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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