Surf Forecasts:
How big are the waves at Arniston today (18 Jul):
- Morning surf: Morning surf (18 Jul, local time) - 3ft (0.9m), 12s period with S swell.
- Afternoon surf: Afternoon surf (18 Jul, local time) - 2.5ft (0.8m), 11s period with S swell.
- Evening surf: Evening surf (18 Jul, local time) - 4.5ft (1.3m), 9s period with SW swell.
The current surf forecast for Arniston at 8PM is: 1.3m 9s primary swell from a Southwest direction and 0.8m 9s secondary swell from a Southwest direction, 0.8m 10s secondary swell from a South direction (forecast issued at 01:00pm July 18). The wind direction is predicted to be cross-offshore.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Jul) | 3ft (0.9m) | 12s |
| Afternoon (18 Jul) | 2.5ft (0.8m) | 11s |
| Evening (18 Jul) | 4.5ft (1.3m) | 9s |
Table - waves today at Arniston. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Very mild (max 18°C on Sat afternoon, min 12°C on Mon morning). Winds decreasing (strong winds from the W on Sun afternoon, light winds from the NNW by Tue morning). | |||||||||||||||||||||
Sat 18 | Sunday 19 | Monday 20 | |||||||||||||||||||
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) | S 11 | S 11 | S 11 | SW 9 | WSW 12 | WSW 12 | SW 12 | SSW 12 | WSW 8 | SW 9 | SW 10 | SW 10 | SW 10 | SW 10 | SW 10 | SSW 10 | SW 9 | ESE 11 | SE 11 | SE 11 | SE 11 |
Wave Graph  | |||||||||||||||||||||
 kJ | 149 | 154 | 198 | 266 | 1256 | 1237 | 240 | 96 | 188 | 446 | 398 | 424 | 416 | 268 | 213 | 294 | 110 | 270 | 293 | 283 | 293 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross-off | cross-off | cross-off | off | off | off | off | cross-off | cross-off | cross-off | off | off | off | off | off | off | cross-off | cross-off | cross-off | cross-off |
High Tide | 6:13PM1.84m | 6:28AM1.55m | 6:53PM1.71m | 7:11AM1.41m | 7:35PM1.56m | ||||||||||||||||
Low Tide | 11:55AM0.20m | 00:33AM0.33m | 12:32PM0.34m | 1:16AM0.45m | 1:09PM0.49m | ||||||||||||||||
 |  | |  |  | | | | |  | | | | | | | | | | | | |
 | — | — | — | — | — | — | 7:41 | — | — | — | — | — | — | — | 7:41 | — | — | — | — | — | — |
 | — | — | 5:47 | — | — | — | — | — | — | — | 5:47 | — | — | — | — | — | — | — | 5:49 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 16 | 18 | 17 | 15 | 15 | 14 | 13 | 14 | 16 | 15 | 15 | 14 | 14 | 13 | 13 | 12 | 13 | 15 | 14 | 14 | 13 |
Feels °C | 13 | 15 | 14 | 12 | 13 | 12 | 11 | 10 | 9 | 7 | 8 | 10 | 11 | 11 | 11 | 10 | 11 | 13 | 11 | 12 | 11 |
Swell 1 Height (m) Direction Period (s) | S 11 | S 11 | S 11 | SW 9 | SSE 11 | SW 12 | SW 12 | SW 8 | SSE 9 | SE 9 | SW 10 | SW 10 | SW 10 | SW 10 | SW 10 | SSW 10 | SW 9 | ESE 11 | SE 11 | SE 11 | SE 11 |
| kJ | 149 | 154 | 198 | 114 | 191 | 286 | 240 | 71 | 54 | 68 | 398 | 424 | 416 | 268 | 213 | 294 | 110 | 270 | 293 | 283 | 293 |
Swell 2 Height (m) Direction Period (s) | SW 9 | SW 9 | SW 9 | S 10 | SW 8 | SSE 11 | SSE 11 | S 11 | SSW 12 | SSE 10 | SE 9 | SE 10 | SE 10 | ESE 10 | ESE 9 | SE 9 | ESE 9 | SSW 8 | SSW 10 | SSW 10 | SSW 16 |
| kJ | 81 | 101 | 99 | 141 | 86 | 153 | 153 | 83 | 94 | 33 | 70 | 115 | 142 | 164 | 154 | 125 | 110 | 90 | 170 | 149 | 273 |
Swell 3 Height (m) Direction Period (s) | SSE 13 | SSW 14 | SSW 13 | SSW 12 | SW 12 | E 10 | E 10 | SSW 12 | S 10 | E 10 | SSE 10 | SSE 10 | SSE 10 | SSW 12 | SSW 12 | SE 13 | SSW 11 | SSW 11 | SSW 18 | S 17 | S 6 |
| kJ | 58 | 75 | 109 | 103 | 157 | 31 | 31 | 96 | 52 | 17 | 33 | 33 | 31 | 115 | 115 | 44 | 105 | 101 | 61 | 147 | 18 |
Wind waves Height (m) Direction Period (s) | — | WSW 2 | WSW 3 | SW 9 | WSW 12 | WSW 12 | WNW 3 | W 3 | WSW 8 | SW 9 | W 4 | W 4 | W 3 | — | WNW 2 | WNW 2 | — | — | SW 2 | — | — |
| kJ | — | 1 | 4 | 266 | 1256 | 1237 | 3 | 7 | 188 | 446 | 20 | 10 | 6 | — | 1 | 1 | — | — | 1 | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 105 | 19 | 19 | 0 | 103 | 0 | 0 | 105 | 149 | 120 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Best forecast wave conditions in Overberg | |||||||||||||||||||||
Best forecast wave conditions in South Africa | |||||||||||||||||||||
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