Surf Forecasts:
How big are the waves at 21st Street (Miami) today (18 Sep):
- Morning surf: Morning surf (18 Sep, local time) - 3ft (0.9m), 8s period with NE swell.
- Afternoon surf: Afternoon surf (18 Sep, local time) - 2.5ft (0.8m), 7s period with NE swell.
- Evening surf: Evening surf (18 Sep, local time) - 2.5ft (0.7m), 7s period with NE swell.
The current surf forecast for 21st Street (Miami) at 7PM is: 0.7m 7s primary swell from a Northeast direction and 0.1m 8s secondary swell from a East direction (forecast issued at 01:00pm September 18). The wind direction is predicted to be onshore.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Sep) | 3ft (0.9m) | 8s |
| Afternoon (18 Sep) | 2.5ft (0.8m) | 7s |
| Evening (18 Sep) | 2.5ft (0.7m) | 7s |
Table - waves today at 21st Street (Miami). (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 27mm), heaviest during Sun night. Warm (max 29°C on Fri afternoon, min 25°C on Sat night). Wind will be generally light. | |||||||||||||||||||||
Fri 18 | Saturday 19 | Sunday 20 | |||||||||||||||||||
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) | NNE 7 | NE 7 | NE 7 | NE 7 | NNE 7 | NNE 7 | NNE 7 | NNE 7 | NE 7 | NNE 7 | NNE 7 | NNE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 70 | 79 | 56 | 54 | 36 | 35 | 34 | 32 | 23 | 18 | 18 | 18 | 12 | 13 | 14 | 14 | 14 | 14 | 8 | 8 | 8 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | cross-on | on | on | on | on | on | on | on | on | cross | cross-on | on | glassy | cross | cross | cross-on | cross-on | cross-on |
High Tide | 2:25PM0.78m | 2:22AM0.72m | 3:29PM0.77m | 3:30AM0.71m | 4:33PM0.77m | ||||||||||||||||
Low Tide | 8:31PM0.37m | 8:48AM0.27m | 9:39PM0.38m | 9:55AM0.28m | 10:45PM0.37m | ||||||||||||||||
 |  | |  | |  |  |  | | | | | | | | | | | |  | | |
 | — | — | — | — | — | — | 7:07 | — | — | — | — | — | — | — | 7:07 | — | — | — | — | — | — |
 | — | — | 7:21 | — | — | — | — | — | — | — | 7:20 | — | — | — | — | — | — | — | 7:19 | — | — |
mm | — | 1 | 1 | 1 | 3 | — | — | — | 1 | 2 | — | 1 | 4 | — | 1 | 1 | 1 | — | 1 | 6 | 2 |
Temp °C | 29 | 29 | 29 | 29 | 29 | 29 | 28 | 28 | 29 | 29 | 29 | 29 | 25 | 27 | 28 | 28 | 29 | 29 | 29 | 29 | 28 |
Feels °C | 32 | 31 | 31 | 31 | 30 | 31 | 31 | 31 | 32 | 30 | 30 | 32 | 26 | 29 | 31 | 32 | 32 | 31 | 31 | 31 | 30 |
Swell 1 Height (m) Direction Period (s) | NNE 7 | NE 7 | NE 7 | NE 7 | NNE 7 | NNE 7 | NNE 7 | NNE 7 | NE 7 | NNE 7 | NNE 7 | NNE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 |
| kJ | 70 | 79 | 56 | 54 | 36 | 35 | 34 | 32 | 23 | 18 | 18 | 18 | 12 | 13 | 14 | 14 | 14 | 14 | 8 | 8 | 8 |
Swell 2 Height (m) Direction Period (s) | E 8 | E 8 | E 8 | E 8 | E 8 | — | ESE 3 | SSE 3 | E 7 | E 7 | E 7 | SE 3 | E 7 | E 7 | E 7 | E 7 | E 7 | E 7 | E 8 | E 8 | E 8 |
| kJ | 1 | 1 | 1 | 1 | 1 | — | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 5 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | E 7 | E 7 | E 7 | E 12 | E 10 | E 10 | E 7 | — | — | — | E 8 | E 8 | E 8 | E 6 | E 6 | — |
| kJ | — | — | — | — | — | 1 | 1 | 1 | 3 | 2 | 2 | 1 | — | — | — | 1 | 1 | 1 | 1 | 1 | — |
Wind waves Height (m) Direction Period (s) | — | — | E 4 | — | E 2 | ESE 3 | — | — | ESE 3 | ESE 3 | SE 3 | — | — | — | ESE 7 | — | — | — | — | — | — |
| kJ | — | — | 1 | — | 1 | 2 | — | — | 2 | 2 | 2 | — | — | — | 4 | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 292 | 292 | 292 | 915 | 731 | 145 | 92 | 185 | 1165 | 359 | 738 | 865 | 731 | 915 | 353 | 353 | 353 | 1634 | 1563 | 1264 | 955 |
Best forecast wave conditions in South Florida | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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