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) - 3ft (0.9m), 11s period with S swell.
The current surf forecast for Arniston at 1AM is: 0.6m 13s primary swell from a South direction and 0.6m 10s secondary swell from a Southwest direction (forecast issued at 07:00pm July 17). The wind direction is predicted to be offshore and the swell rating is 2.
| 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) | 3ft (0.9m) | 11s |
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 Sun night). Winds decreasing (fresh winds from the WSW on Sun afternoon, calm by Mon afternoon). | |||||||||||||||||||
Fri 17 | Saturday 18 | Sunday 19 | |||||||||||||||||
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) | SSW 11 | SSW 10 | SSW 10 | S 13 | S 12 | S 12 | S 11 | S 11 | S 11 | S 12 | SSE 11 | SW 12 | SW 12 | SW 12 | WSW 8 | SW 9 | SW 10 | SSW 12 | SSW 11 |
Wave Graph  | |||||||||||||||||||
 kJ | 300 | 204 | 183 | 119 | 347 | 278 | 185 | 154 | 198 | 216 | 194 | 248 | 240 | 236 | 149 | 314 | 925 | 763 | 686 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | off | off | off | off | off | cross-off | cross-off | cross-off | off | off | off | off | cross-off | cross-off | off | off | off |
High Tide | 5:34PM1.93m | 5:48AM1.69m | 6:13PM1.84m | 6:28AM1.55m | 6:53PM1.71m | ||||||||||||||
Low Tide | 11:52PM0.22m | 11:55AM0.20m | 00:33AM0.33m | 12:32PM0.34m | |||||||||||||||
 |  |  | | | |  | | | | | |  | | | |  | | | |
 | — | — | — | — | 7:41 | — | — | — | — | — | — | — | 7:41 | — | — | — | — | — | — |
 | 5:46 | — | — | — | — | — | — | — | 5:47 | — | — | — | — | — | — | — | 5:47 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 17 | 16 | 16 | 15 | 15 | 15 | 16 | 18 | 17 | 16 | 15 | 14 | 14 | 14 | 16 | 14 | 15 | 14 | 13 |
Feels °C | 16 | 14 | 15 | 13 | 13 | 13 | 14 | 15 | 15 | 14 | 13 | 12 | 12 | 9 | 9 | 7 | 10 | 10 | 10 |
Swell 1 Height (m) Direction Period (s) | SSW 11 | SSW 10 | SSW 10 | SW 10 | S 12 | S 12 | S 11 | S 11 | S 11 | S 12 | SSE 11 | SW 12 | SW 12 | SW 12 | SE 9 | SE 9 | SW 11 | SSW 12 | SSW 11 |
| kJ | 300 | 204 | 183 | 79 | 347 | 278 | 185 | 154 | 198 | 216 | 194 | 248 | 240 | 236 | 65 | 83 | 604 | 763 | 686 |
Swell 2 Height (m) Direction Period (s) | E 10 | E 10 | S 13 | S 13 | E 10 | SW 9 | SW 9 | SW 9 | SW 9 | SW 9 | SW 9 | SSE 11 | SSE 11 | S 11 | SSW 12 | SSE 10 | SE 9 | SE 9 | SE 10 |
| kJ | 35 | 33 | 89 | 119 | 32 | 53 | 83 | 119 | 117 | 97 | 74 | 153 | 150 | 83 | 94 | 33 | 85 | 90 | 94 |
Swell 3 Height (m) Direction Period (s) | S 14 | S 13 | E 10 | S 7 | SSE 15 | E 10 | SSE 13 | SSW 14 | SSW 13 | SSW 12 | SW 12 | E 10 | E 10 | SE 9 | S 10 | SSW 12 | SSE 10 | SSE 10 | SSE 9 |
| kJ | 16 | 56 | 33 | 40 | 21 | 32 | 58 | 77 | 109 | 103 | 157 | 31 | 31 | 40 | 52 | 56 | 33 | 31 | 29 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | W 2 | W 3 | WSW 8 | SW 9 | SW 10 | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 7 | 149 | 314 | 925 | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 19 | 19 | 19 | 0 | 0 | 0 | 103 | 110 | 168 | 103 | 0 | 0 |
Best forecast wave conditions in Overberg | |||||||||||||||||||
Best forecast wave conditions in South Africa | |||||||||||||||||||
Header Global | |||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Arniston surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Nearest