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Surf Forecasts:
Arniston surfForecast / Overberg / South Africa
48hr Weather and Surf, issued 1 am Wednesday 13 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
18.1° C
(Which is slightly warmer than usual)How big are the waves at Arniston today?
The current surf forecast for Arniston at 8AM is: 3.0m 12s primary swell from a South-southwest direction and 0.1m 11s secondary swell from a Southeast direction (forecast issued at 01:00am May 13). The wind direction is predicted to be cross-offshore.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (13 May) | 10ft (3.0m) | 12s |
| Afternoon (13 May) | 16ft (5.0m) | 12s |
| Evening (13 May) | 10ft (3.0m) | 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 2mm), mostly falling on Wed morning. Very mild (max 18°C on Thu afternoon, min 13°C on Wed night). Winds decreasing (strong winds from the W on Wed morning, light winds from the SSE by Fri night). | ||||||||||||||||||||||||
Wednesday 13 | Thursday 14 | Friday 15 | ||||||||||||||||||||||
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 12 | SSW 12 | SSW 12 | SW 12 | SW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 11 | SSW 11 | SSW 11 | SSW 11 | SSW 11 | S 14 | S 14 | S 14 | S 14 | S 14 | S 14 | S 13 | S 13 | |
1996 | 2136 | 2909 | 5236 | 7274 | 2780 | 2233 | 1977 | 1835 | 1538 | 1366 | 1083 | 911 | 711 | 604 | 505 | 1809 | 2137 | 2522 | 2487 | 2452 | 2103 | 1877 | 1507 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | off | off | off | off | off | off | off | off | off | off | cross-off | cross-off | cross | cross-on | on | |
High Tide | 00:15AM1.69m | 12:48PM1.57m | 00:59AM1.84m | 1:32PM1.70m | 1:42AM1.96m | 2:15PM1.81m | ||||||||||||||||||
Low Tide | 6:40AM0.31m | 6:44PM0.36m | 7:23AM0.16m | 7:29PM0.26m | 8:05AM0.04m | 8:13PM0.17m | ||||||||||||||||||
 |  |  |  |  | | | |  | |  | | | | | | | | | | | | | | |
 | — | 7:22 | — | — | — | — | — | — | — | 7:24 | — | — | — | — | — | — | — | 7:24 | — | — | — | — | — | — |
 | — | — | — | — | — | 5:45 | — | — | — | — | — | — | — | 5:45 | — | — | — | — | — | — | — | 5:45 | — | — |
— | — | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 15 | 15 | 15 | 16 | 16 | 15 | 15 | 15 | 14 | 13 | 13 | 14 | 16 | 18 | 17 | 16 | 16 | 16 | 16 | 17 | 18 | 17 | 17 | 16 |
5 | 5 | 6 | 8 | 9 | 9 | 10 | 11 | 10 | 10 | 10 | 12 | 14 | 16 | 14 | 13 | 13 | 13 | 14 | 16 | 16 | 15 | 16 | 15 | |
Swell 1 Height (m) Direction Period (s) | SSW 12 | SSW 12 | SE 11 | SSW 13 | SSW 13 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 11 | SSW 11 | SSW 11 | SSW 11 | SSW 11 | S 14 | S 14 | S 14 | S 14 | S 14 | S 14 | S 13 | S 13 |
 kJ | 1996 | 2136 | 5 | 3051 | 2995 | 2780 | 2233 | 1977 | 1835 | 1538 | 1366 | 1083 | 911 | 711 | 561 | 505 | 1809 | 2137 | 2522 | 2487 | 2452 | 2103 | 1877 | 1507 |
Swell 2 Height (m) Direction Period (s) | — | — | — | SE 11 | SSE 10 | SSE 10 | — | — | — | — | SW 20 | SW 19 | SW 18 | SSW 18 | S 14 | S 14 | SW 16 | SW 16 | SW 17 | SW 15 | SW 15 | SW 15 | SW 15 | SW 14 |
| kJ | — | — | — | 5 | 11 | 10 | — | — | — | — | 15 | 14 | 12 | 31 | 138 | 416 | 93 | 95 | 104 | 83 | 113 | 145 | 273 | 598 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | SW 18 | SW 18 | SSW 17 | SW 16 | SW 16 | SW 16 | WSW 15 | SW 17 | SW 15 | SW 15 | SSW 12 | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | 49 | 80 | 30 | 41 | 93 | 95 | 537 | 179 | 183 | 183 | 29 | — |
Wind waves Height (m) Direction Period (s) | WSW 5 | WSW 5 | SSW 12 | SW 12 | SW 12 | — | — | — | — | — | — | — | — | — | WSW 11 | — | WSW 10 | — | — | — | — | — | — | — |
| kJ | 109 | 109 | 2909 | 5236 | 7274 | — | — | — | — | — | — | — | — | — | 604 | — | 841 | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 304 | 304 | 306 | 306 | 168 | 168 | 113 | 113 | 76 | 76 | 76 | 76 | 0 | 0 | 0 | 0 | 19 | 76 | 76 | 76 | 135 | 81 | 81 | 81 |
Best forecast wave conditions in Overberg | ||||||||||||||||||||||||
Best forecast wave conditions in South Africa | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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