Surf Forecasts:
How big are the waves at J-Bay today (20 Sep):
- Afternoon surf: Afternoon surf (20 Sep, local time) - 7.5ft (2.3m), 13s period with SW swell.
- Evening surf: Evening surf (20 Sep, local time) - 7ft (2.1m), 13s period with SW swell.
The current surf forecast for J-Bay at 11PM is: 2.0m 13s primary swell from a Southwest direction and 0.9m 8s secondary swell from a East direction (forecast issued at 07:00pm September 20). The wind direction is predicted to be glassy and the swell rating is 4.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 Sep) | - | - |
| Afternoon (20 Sep) | 7.5ft (2.3m) | 13s |
| Evening (20 Sep) | 7ft (2.1m) | 13s |
Table - waves today at J-Bay. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 2mm), mostly falling on Tue night. Warm (max 29°C on Tue afternoon, min 16°C on Mon night). Winds increasing (calm on Sun night, strong winds from the WSW by Wed morning). | |||||||||||||||||||
Sun 20 | Monday 21 | Tuesday 22 | |||||||||||||||||
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) | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 11 | SW 12 | SW 13 | SW 13 | SW 13 | SW 12 |
Wave Graph  | |||||||||||||||||||
 kJ | 1749 | 1498 | 1286 | 1185 | 1075 | 956 | 785 | 772 | 635 | 561 | 514 | 448 | 337 | 278 | 259 | 286 | 369 | 357 | 324 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | glassy | glassy | glassy | glassy | glassy | on | on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | glassy |
High Tide | 00:28AM1.02m | 1:12PM1.11m | 1:16AM1.16m | 1:43PM1.27m | |||||||||||||||
Low Tide | 6:22PM0.77m | 6:53AM0.63m | 7:18PM0.62m | 7:28AM0.48m | 7:49PM0.47m | ||||||||||||||
 |  | | | |  | | | | |  | | | | | | | | | |
 | — | — | — | — | 6:11 | — | — | — | — | — | — | — | 6:09 | — | — | — | — | — | — |
 | 6:14 | — | — | — | — | — | — | — | 6:15 | — | — | — | — | — | — | — | 6:15 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 18 | 18 | 18 | 17 | 17 | 17 | 18 | 18 | 18 | 17 | 17 | 16 | 16 | 17 | 24 | 29 | 28 | 26 | 23 |
Feels °C | 17 | 18 | 19 | 17 | 18 | 18 | 18 | 17 | 16 | 16 | 15 | 14 | 15 | 16 | 24 | 30 | 27 | 26 | 24 |
Swell 1 Height (m) Direction Period (s) | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 11 | SW 12 | SW 13 | SW 13 | E 7 | E 8 |
| kJ | 1749 | 1498 | 1286 | 1185 | 1075 | 956 | 785 | 772 | 635 | 561 | 514 | 448 | 337 | 278 | 259 | 286 | 369 | 294 | 283 |
Swell 2 Height (m) Direction Period (s) | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | SSW 15 | SSW 15 | SSW 15 | SW 14 | SW 14 | SW 14 | SW 10 | S 7 | SW 13 | SW 12 |
| kJ | 109 | 107 | 107 | 84 | 84 | 65 | 65 | 65 | 47 | 146 | 191 | 188 | 211 | 206 | 191 | 63 | 25 | 357 | 324 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | SE 4 | — | SSW 16 | SSW 16 | SSW 15 | — | — | — | — | WSW 11 | S 7 | WSW 11 | SSE 7 | S 14 |
| kJ | — | — | — | — | — | 4 | — | 51 | 94 | 146 | — | — | — | — | 66 | 27 | 40 | 16 | 61 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | SSE 4 | — | SSE 4 | SE 4 | SE 4 | E 8 | E 8 | E 4 | E 5 | E 5 | E 6 | E 6 | E 6 | — | — |
| kJ | — | — | — | — | 7 | — | 7 | 9 | 8 | 86 | 130 | 44 | 63 | 88 | 101 | 148 | 268 | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 3 | 0 | 0 | 0 | 0 | 0 | 19 | 513 | 325 | 31 | 140 | 140 | 140 | 140 | 180 | 3 | 180 | 31 | 0 |
Best forecast wave conditions in Eastern Cape (South) | |||||||||||||||||||
Best forecast wave conditions in South Africa | |||||||||||||||||||
Header Global | |||||||||||||||||||
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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