Surf Forecasts:
How big are the waves at Arniston today (20 Sep):
- Afternoon surf: Afternoon surf (20 Sep, local time) - 3.5ft (1.1m), 13s period with SW swell.
- Evening surf: Evening surf (20 Sep, local time) - 3ft (0.9m), 13s period with SW swell.
The current surf forecast for Arniston at 11PM is: 0.9m 12s primary swell from a Southwest direction and 0.9m 8s secondary swell from a East-southeast direction (forecast issued at 07:00pm September 20). The wind direction is predicted to be onshore.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 Sep) | - | - |
| Afternoon (20 Sep) | 3.5ft (1.1m) | 13s |
| Evening (20 Sep) | 3ft (0.9m) | 13s |
Table - waves today at Arniston. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 4mm), mostly falling on Tue afternoon. Warm (max 24°C on Tue afternoon, min 15°C on Mon night). Winds decreasing (fresh winds from the E on Mon afternoon, light winds from the N by Tue afternoon). | |||||||||||||||||||
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 12 | SW 12 | SW 12 | SW 12 | SW 12 | E 8 | SSW 15 | SSW 15 | E 6 | E 6 | SSW 14 | E 7 | SSW 13 | ESE 7 | ESE 7 | ESE 8 | ESE 7 |
Wave Graph  | |||||||||||||||||||
 kJ | 374 | 273 | 260 | 214 | 178 | 175 | 172 | 137 | 81 | 121 | 139 | 212 | 232 | 255 | 198 | 214 | 199 | 169 | 147 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | on | on | on | on | on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-off | off | cross-off |
High Tide | 11:55PM1.20m | 12:38PM1.31m | 00:42AM1.35m | 1:09PM1.48m | |||||||||||||||
Low Tide | 6:07PM0.85m | 6:25AM0.69m | 6:52PM0.70m | 6:59AM0.54m | 7:21PM0.53m | ||||||||||||||
 |  |  |  | |  | |  | | | | | | | | |  |  | | |
 | — | — | — | — | 6:30 | — | — | — | — | — | — | — | 6:28 | — | — | — | — | — | — |
 | 6:32 | — | — | — | — | — | — | — | 6:34 | — | — | — | — | — | — | — | 6:35 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 3 | 1 | — |
Temp °C | 17 | 17 | 16 | 16 | 16 | 17 | 17 | 17 | 17 | 16 | 15 | 15 | 15 | 15 | 21 | 24 | 21 | 21 | 18 |
Feels °C | 15 | 16 | 15 | 15 | 14 | 15 | 14 | 13 | 12 | 11 | 11 | 11 | 12 | 13 | 20 | 24 | 21 | 21 | 16 |
Swell 1 Height (m) Direction Period (s) | SW 13 | SW 13 | ESE 8 | ESE 8 | SW 12 | SW 12 | SW 12 | SW 12 | SSW 12 | SW 11 | SW 11 | SSW 11 | SSW 14 | E 7 | E 7 | ESE 7 | ESE 7 | ESE 8 | ESE 7 |
| kJ | 374 | 273 | 119 | 112 | 178 | 175 | 172 | 68 | 81 | 96 | 99 | 79 | 232 | 202 | 198 | 214 | 199 | 169 | 147 |
Swell 2 Height (m) Direction Period (s) | — | — | SW 12 | SW 12 | — | — | — | SSW 12 | SW 12 | SSW 15 | SSW 14 | SSW 14 | SW 14 | SSW 13 | SSW 13 | SSW 12 | SW 12 | SW 12 | SW 12 |
| kJ | — | — | 260 | 214 | — | — | — | 82 | 66 | 121 | 120 | 116 | 186 | 222 | 195 | 175 | 144 | 142 | 140 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | SSW 15 | SSW 15 | — | — | SW 14 | WSW 11 | SSW 13 | — | S 17 | S 16 | SSE 7 | S 13 |
| kJ | — | — | — | — | — | — | — | 43 | 72 | — | — | 203 | 133 | 118 | — | 6 | 5 | 9 | 14 |
Wind waves Height (m) Direction Period (s) | E 8 | E 8 | — | — | ESE 8 | ESE 8 | ESE 8 | E 8 | E 5 | E 5 | E 6 | E 6 | E 6 | E 7 | — | — | — | — | WSW 2 |
| kJ | 137 | 137 | — | — | 109 | 112 | 112 | 137 | 61 | 104 | 139 | 212 | 200 | 255 | — | — | — | — | 1 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 144 | 81 | 81 | 81 | 81 | 81 | 81 | 81 | 140 | 81 | 81 | 81 | 83 | 76 | 76 | 103 | 0 | 0 | 19 |
Best forecast wave conditions in Overberg | |||||||||||||||||||
Best forecast wave conditions in South Africa | |||||||||||||||||||
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