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 NNE swell.
- Afternoon surf: Afternoon surf (18 Sep, local time) - 2.5ft (0.8m), 7s period with NNE swell.
- Evening surf: Evening surf (18 Sep, local time) - 2.5ft (0.7m), 7s period with NNE swell.
The current surf forecast for 21st Street (Miami) at 2AM is: 1.1m 8s primary swell from a Northeast direction and 0.1m 8s secondary swell from a East direction, 0.3m 4s secondary swell from a East direction (forecast issued at 07:00pm September 17). 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 25mm), heaviest during Fri night. Warm (max 29°C on Fri morning, min 26°C on Fri night). Wind will be generally light. | |||||||||||||||||||
Thu 17 | Friday 18 | Saturday 19 | |||||||||||||||||
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 8 | NE 8 | NNE 8 | NE 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 |
Wave Graph  | |||||||||||||||||||
 kJ | 146 | 140 | 126 | 129 | 110 | 88 | 79 | 79 | 56 | 54 | 47 | 35 | 34 | 32 | 23 | 18 | 18 | 18 | 11 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | on | on | on | on | on | on | on | cross | on | cross-on | cross-on | cross-on | on | on | cross-on | on | on |
High Tide | 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 | 2 | 2 | 1 | 2 | 1 | — | 2 | 1 | 2 | 5 | 4 | — | — | — | 2 | 1 | — | 1 | 1 |
Temp °C | 28 | 28 | 28 | 28 | 28 | 28 | 29 | 29 | 29 | 27 | 26 | 27 | 27 | 27 | 28 | 29 | 29 | 28 | 29 |
Feels °C | 30 | 29 | 30 | 30 | 31 | 31 | 32 | 31 | 31 | 29 | 28 | 29 | 29 | 29 | 30 | 32 | 32 | 30 | 32 |
Swell 1 Height (m) Direction Period (s) | NNE 7 | SSE 4 | NE 7 | NE 8 | NE 8 | NNE 8 | NE 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 |
| kJ | 146 | 2 | 126 | 129 | 110 | 88 | 79 | 79 | 56 | 54 | 47 | 35 | 34 | 32 | 23 | 18 | 18 | 18 | 11 |
Swell 2 Height (m) Direction Period (s) | SE 4 | E 8 | SSE 4 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | ESE 8 | E 8 | E 8 | — | E 5 | E 6 | E 6 | E 7 | E 6 | E 7 |
| kJ | 1 | 1 | 2 | 1 | 1 | 1 | 1 | 1 | 5 | 6 | 4 | 4 | — | 1 | 1 | 1 | 1 | 1 | 1 |
Swell 3 Height (m) Direction Period (s) | E 8 | E 8 | E 8 | — | — | E 8 | E 8 | E 8 | E 8 | — | — | — | SE 4 | SE 4 | E 7 | E 7 | E 10 | E 7 | — |
| kJ | 1 | 1 | 1 | — | — | 1 | 1 | 1 | 1 | — | — | — | 1 | 1 | 1 | 1 | 2 | 1 | — |
Wind waves Height (m) Direction Period (s) | E 5 | NE 7 | E 4 | E 4 | — | ESE 3 | — | — | ESE 8 | — | — | E 5 | ESE 4 | — | — | ESE 3 | ESE 3 | — | — |
| kJ | 11 | 140 | 3 | 2 | — | 1 | — | — | 6 | — | — | 2 | 1 | — | — | 1 | 1 | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 292 | 731 | 338 | 338 | 338 | 292 | 292 | 292 | 731 | 29 | 69 | 74 | 129 | 359 | 359 | 359 | 1666 | 738 | 731 |
Best forecast wave conditions in South Florida | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
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