Surf Forecasts:
How big are the waves at Arniston today (17 Aug):
- Morning surf: Morning surf (17 Aug, local time) - 3.5ft (1.1m), 13s period with SW swell.
- Afternoon surf: Afternoon surf (17 Aug, local time) - 3.5ft (1.1m), 13s period with SW swell.
- Evening surf: Evening surf (17 Aug, local time) - 2.5ft (0.7m), 15s period with SW swell.
The current surf forecast for Arniston at 6AM is: 1.3m 14s primary swell from a Southwest direction and 0.6m 8s secondary swell from a East direction (forecast issued at 01:00am August 17). The wind direction is predicted to be cross-offshore.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 Aug) | 3.5ft (1.1m) | 13s |
| Afternoon (17 Aug) | 3.5ft (1.1m) | 13s |
| Evening (17 Aug) | 2.5ft (0.7m) | 15s |
Table - waves today at Arniston. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Very mild (max 19°C on Mon morning, min 12°C on Tue night). Winds decreasing (fresh winds from the WSW on Mon afternoon, calm by Tue morning). | ||||||||||||||||||||||||
Monday 17 | Tuesday 18 | Wednesday 19 | ||||||||||||||||||||||
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 | 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 14 | SW 14 | SW 13 | SW 13 | SW 13 | SW 16 | SW 15 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SW 12 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 716 | 686 | 511 | 451 | 451 | 532 | 229 | 366 | 464 | 290 | 560 | 647 | 772 | 958 | 928 | 900 | 900 | 885 | 727 | 715 | 636 | 680 | 563 | 627 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross-off | off | off | glassy | cross-on | on | on | cross-on | cross-on | cross-on | cross | glassy | cross-off | cross-off | off | off |
High Tide | 5:48AM1.62m | 6:04PM1.73m | 6:20AM1.47m | 6:36PM1.56m | 6:55AM1.32m | 7:13PM1.39m | ||||||||||||||||||
Low Tide | 11:49PM0.26m | 11:47AM0.31m | 00:21AM0.40m | 12:16PM0.47m | 00:54AM0.55m | 12:47PM0.63m | ||||||||||||||||||
 | |  | |  | |  |  | | | | | | | | | | | | | | | | | |
 | — | 7:16 | — | — | — | — | — | — | — | 7:16 | — | — | — | — | — | — | — | 7:15 | — | — | — | — | — | — |
 | — | — | — | — | — | 6:08 | — | — | — | — | — | — | — | 6:09 | — | — | — | — | — | — | — | 6:09 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 15 | 15 | 17 | 19 | 17 | 14 | 15 | 15 | 14 | 14 | 13 | 14 | 15 | 14 | 13 | 13 | 12 | 12 | 12 | 13 | 14 | 15 | 14 | 14 |
Feels °C | 13 | 13 | 14 | 16 | 11 | 9 | 10 | 12 | 12 | 12 | 12 | 14 | 14 | 12 | 10 | 10 | 9 | 10 | 11 | 13 | 10 | 9 | 10 | 11 |
Swell 1 Height (m) Direction Period (s) | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SW 16 | WSW 13 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SW 12 |
| kJ | 716 | 686 | 511 | 451 | 451 | 532 | 209 | 366 | 464 | 290 | 560 | 647 | 772 | 958 | 928 | 900 | 900 | 885 | 727 | 715 | 636 | 680 | 563 | 627 |
Swell 2 Height (m) Direction Period (s) | E 7 | E 8 | E 9 | E 9 | E 9 | E 9 | SW 15 | E 11 | E 11 | SSW 14 | E 11 | E 11 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 |
| kJ | 26 | 28 | 85 | 81 | 78 | 78 | 229 | 57 | 57 | 175 | 79 | 55 | 54 | 53 | 33 | 32 | 31 | 31 | 31 | 31 | 30 | 17 | 16 | 16 |
Swell 3 Height (m) Direction Period (s) | ESE 10 | ESE 10 | — | — | — | — | E 8 | E 7 | E 7 | E 11 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 35 | 36 | — | — | — | — | 31 | 17 | 17 | 79 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | WSW 3 | SW 4 | WSW 4 | SW 4 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | WSW 3 | — |
| kJ | — | — | — | — | 5 | 16 | 13 | 6 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 6 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 105 | 167 | 103 | 103 | 0 | 0 | 0 | 0 | 135 | 135 | 81 | 76 | 76 | 76 | 76 | 0 | 103 | 127 | 0 | 0 |
Best forecast wave conditions in Overberg | ||||||||||||||||||||||||
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