Surf Forecasts:
How big are the waves at Jap Rock today (18 Sep):
- Morning surf: Morning surf (18 Sep, local time) - 3.5ft (1.0m), 8s period with NE swell.
- Afternoon surf: Afternoon surf (18 Sep, local time) - 3ft (0.9m), 7s period with NE swell.
- Evening surf: Evening surf (18 Sep, local time) - 2.5ft (0.8m), 7s period with NE swell.
The current surf forecast for Jap Rock at 10AM is: 1.0m 7s primary swell from a Northeast direction and 0.1m 8s secondary swell from a East direction (forecast issued at 07:00am September 18). The wind direction is predicted to be cross-onshore.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Sep) | 3.5ft (1.0m) | 8s |
| Afternoon (18 Sep) | 3ft (0.9m) | 7s |
| Evening (18 Sep) | 2.5ft (0.8m) | 7s |
Table - waves today at Jap Rock. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 32mm), heaviest during Fri night. Warm (max 30°C on Sun afternoon, min 27°C on Fri night). Wind will be generally light. | |||||||||||||||||||||||
Friday 18 | Saturday 19 | Sunday 20 | |||||||||||||||||||||
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 | 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 8 | NE 8 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 |
Wave Graph  | |||||||||||||||||||||||
 kJ | 143 | 125 | 107 | 91 | 79 | 77 | 62 | 51 | 38 | 37 | 37 | 37 | 22 | 22 | 23 | 27 | 27 | 19 | 19 | 19 | 19 | 18 | 12 |
Wind (km/h) | |||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | glassy | glassy | glassy | on | on | on | cross-on | cross-on | on | on | glassy | glassy | cross-on | cross-on | on | glassy |
High Tide | 2:13PM0.82m | 2:20AM0.79m | 3:13PM0.80m | 3:21AM0.78m | 4:15PM0.81m | ||||||||||||||||||
Low Tide | 8:06AM0.29m | 8:38PM0.41m | 9:07AM0.31m | 9:43PM0.42m | 10:09AM0.31m | 10:44PM0.41m | |||||||||||||||||
 |  |  |  | |  |  | | | | | | | | | | | | | | | | | |
 | 7:05 | — | — | — | — | — | — | — | 7:07 | — | — | — | — | — | — | — | 7:07 | — | — | — | — | — | — |
 | — | — | — | — | 7:21 | — | — | — | — | — | — | — | 7:20 | — | — | — | — | — | — | — | 7:19 | — | — |
mm | — | — | — | 2 | 2 | — | 5 | — | — | 2 | 3 | 2 | — | 1 | 1 | 2 | 1 | 1 | 2 | — | 1 | 4 | 2 |
Temp °C | 28 | 28 | 29 | 29 | 29 | 28 | 27 | 27 | 27 | 27 | 29 | 29 | 29 | 29 | 29 | 29 | 28 | 28 | 29 | 30 | 29 | 28 | 27 |
Feels °C | 32 | 32 | 32 | 31 | 31 | 30 | 30 | 31 | 31 | 31 | 32 | 31 | 32 | 31 | 31 | 32 | 31 | 32 | 32 | 32 | 30 | 30 | 31 |
Swell 1 Height (m) Direction Period (s) | NE 8 | NE 8 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 |
| kJ | 143 | 125 | 107 | 91 | 79 | 77 | 62 | 51 | 38 | 37 | 37 | 37 | 22 | 22 | 23 | 27 | 27 | 19 | 19 | 19 | 19 | 18 | 12 |
Swell 2 Height (m) Direction Period (s) | — | E 8 | E 8 | E 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 7 | E 7 | E 7 | E 7 | NE 9 | E 7 | NE 8 | E 7 | E 7 | E 7 | E 8 | E 8 | E 8 | E 8 | S 5 |
| kJ | — | 1 | 1 | 1 | 6 | 6 | 6 | 6 | 5 | 4 | 4 | 4 | 3 | 4 | 3 | 1 | 1 | 1 | 6 | 6 | 5 | 5 | 2 |
Swell 3 Height (m) Direction Period (s) | E 8 | — | E 12 | E 12 | E 12 | E 12 | E 12 | E 12 | — | — | — | E 12 | E 7 | NE 8 | E 7 | E 9 | E 9 | E 9 | — | — | — | S 5 | E 8 |
| kJ | 1 | — | 3 | 3 | 3 | 3 | 3 | 3 | — | — | — | 3 | 4 | 3 | 4 | 2 | 2 | 2 | — | — | — | 1 | 5 |
Wind waves Height (m) Direction Period (s) | ESE 3 | — | — | — | — | — | ESE 4 | — | — | — | — | — | — | — | — | ESE 7 | — | — | — | — | — | — | — |
| kJ | 1 | — | — | — | — | — | 2 | — | — | — | — | — | — | — | — | 4 | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||||
Distance (km) | 1000 | 344 | 293 | 307 | 310 | 310 | 1733 | 1 | 7 | 7 | 7 | 63 | 61 | 366 | 1284 | 925 | 974 | 359 | 170 | 310 | 359 | 307 | 308 |
Best forecast wave conditions in South Florida | |||||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||||
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