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Surf Forecasts:
Arniston surfForecast / Overberg / South Africa
48hr Weather and Surf, issued 1 am Tuesday 12 May 2026 SASTForecast update in hr min s Forecast update imminent
Arniston surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Arniston sea temperature is
18.2° C
(Which is slightly warmer than usual)How big are the waves at Arniston today?
The current surf forecast for Arniston at 7AM is: 3.0m 13s primary swell from a South-southwest direction and 0.1m 12s secondary swell from a Southeast direction (forecast issued at 01:00am May 12). The wind direction is predicted to be cross-offshore and the swell rating is 11.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (12 May) | 13ft (4.0m) | 13s |
| Afternoon (12 May) | 8ft (2.5m) | 13s |
| Evening (12 May) | 8ft (2.4m) | 12s |
Table - waves today at Arniston. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastLight rain (total 3mm), mostly falling on Tue morning. Very mild (max 17°C on Tue morning, min 13°C on Wed night). Winds decreasing (strong winds from the W on Tue night, light winds from the WSW by Thu afternoon). | ||||||||||||||||||||||||
Tuesday 12 | Wednesday 13 | Thursday 14 | ||||||||||||||||||||||
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 |    |    |    | |||||||||||||||||||||
SSW 13 | SSW 13 | SW 13 | SSW 13 | SSW 13 | SW 12 | SSW 12 | SW 12 | SSW 12 | SSW 12 | SSW 12 | SW 12 | SW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 11 | S 11 | SSW 11 | SSW 11 | SSW 11 | S 15 | |
2067 | 3281 | 5687 | 2434 | 2023 | 2231 | 1667 | 2124 | 1737 | 1897 | 2613 | 4812 | 4742 | 2622 | 2124 | 1871 | 1543 | 1343 | 1187 | 1023 | 894 | 711 | 634 | 510 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | cross-off | cross-off | off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | off | cross-off | cross-off | cross-off | cross-off | off | cross-off | |
High Tide | 11:27PM1.53m | 11:59AM1.43m | 00:15AM1.69m | 12:48PM1.57m | 00:59AM1.84m | 1:32PM1.70m | ||||||||||||||||||
Low Tide | 5:53AM0.49m | 5:55PM0.48m | 6:40AM0.31m | 6:44PM0.36m | 7:23AM0.16m | 7:29PM0.26m | ||||||||||||||||||
 |  |  |  | | |  |  |  | |  | | |  | | | | |  | | | | | | |
 | — | 7:22 | — | — | — | — | — | — | — | 7:22 | — | — | — | — | — | — | — | 7:24 | — | — | — | — | — | — |
 | — | — | — | — | — | 5:46 | — | — | — | — | — | — | — | 5:45 | — | — | — | — | — | — | — | 5:45 | — | — |
8 | 19 | 2 | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 17 | 16 | 16 | 17 | 17 | 17 | 16 | 16 | 15 | 15 | 15 | 16 | 15 | 15 | 15 | 14 | 14 | 13 | 13 | 14 | 15 | 15 | 16 | 15 |
11 | 9 | 9 | 10 | 9 | 9 | 8 | 7 | 5 | 5 | 6 | 8 | 8 | 9 | 11 | 10 | 11 | 10 | 10 | 12 | 13 | 13 | 14 | 12 | |
Swell 1 Height (m) Direction Period (s) | SSW 13 | SE 11 | SSW 13 | SSW 13 | SSW 13 | — | SSW 12 | — | SSW 12 | SSW 12 | SE 11 | SSW 12 | SSW 13 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 11 | S 11 | SSW 11 | SSW 11 | SSW 11 | SSW 11 |
 kJ | 2067 | 20 | 3309 | 2434 | 2023 | — | 1667 | — | 1737 | 1897 | 5 | 2707 | 2889 | 2622 | 2124 | 1871 | 1543 | 1343 | 1187 | 1023 | 894 | 711 | 634 | 485 |
Swell 2 Height (m) Direction Period (s) | SE 12 | — | SE 12 | — | — | — | — | — | SE 12 | — | — | SE 11 | SSE 10 | SSE 11 | — | — | — | — | SW 20 | SW 19 | SW 18 | SSW 18 | S 14 | S 15 |
| kJ | 23 | — | 5 | — | — | — | — | — | 5 | — | — | 5 | 11 | 11 | — | — | — | — | 15 | 14 | 12 | 31 | 134 | 510 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SW 18 | SW 18 | SSW 18 | SW 16 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 49 | 50 | 30 | 41 |
Wind waves Height (m) Direction Period (s) | WSW 13 | SSW 13 | SW 13 | W 4 | WSW 5 | SW 12 | WSW 5 | SW 12 | WSW 5 | W 5 | SSW 12 | SW 12 | SW 12 | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 1190 | 3281 | 5687 | 48 | 84 | 2231 | 59 | 2124 | 91 | 85 | 2613 | 4812 | 4742 | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 184 | 161 | 174 | 174 | 174 | 168 | 168 | 304 | 304 | 304 | 306 | 174 | 174 | 127 | 176 | 113 | 103 | 76 | 76 | 0 | 0 | 0 | 0 | 19 |
Best forecast wave conditions in Overberg | ||||||||||||||||||||||||
Best forecast wave conditions in South Africa | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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