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Surf Forecasts:
Arniston surfForecast / Overberg / South Africa
48hr Weather and Surf, issued 7 am Saturday 09 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
18.0° C
(Which is normal for this time of year)How big are the waves at Arniston today?
The current surf forecast for Arniston at 4PM is: 2.3m 12s primary swell from a Southeast direction and 0.8m 14s secondary swell from a Southwest direction (forecast issued at 07:00am May 09). The wind direction is predicted to be cross-onshore and the swell rating is 11.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (09 May) | 8ft (2.5m) | 13s |
| Afternoon (09 May) | 8ft (2.4m) | 12s |
| Evening (09 May) | 7ft (2.2m) | 12s |
Table - waves today at Arniston. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 57mm), heaviest during Mon afternoon. Very mild (max 18°C on Sat afternoon, min 11°C on Mon morning). Winds increasing (light winds from the S on Sat afternoon, gales from the NW by Mon morning). | ||||||||||||||||||||||||
Saturday 9 | Sunday 10 | Monday 11 | Tue 12 | |||||||||||||||||||||
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 | 2 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
SE 13 | SE 13 | SE 13 | SE 12 | SE 12 | SE 12 | SE 12 | SE 12 | SE 12 | SE 11 | SE 11 | SE 11 | WSW 9 | WSW 10 | WSW 11 | SW 12 | SW 12 | SW 12 | SW 12 | WSW 13 | WSW 14 | WSW 13 | SW 13 | SW 13 | |
2740 | 2522 | 2201 | 1848 | 1565 | 1358 | 1169 | 1149 | 897 | 726 | 534 | 429 | 533 | 1040 | 1584 | 1112 | 635 | 456 | 428 | 2472 | 3834 | 3398 | 3087 | 2496 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | cross-off | cross-off | cross-on | cross | cross-on | cross-on | cross | cross-off | off | off | off | off | cross-off | off | off | off | cross-off | off | off | off | off | off | off | |
High Tide | 7:50AM1.23m | 9:06PM1.30m | 9:33AM1.21m | 10:28PM1.39m | 10:58AM1.29m | 11:27PM1.53m | ||||||||||||||||||
Low Tide | 2:16PM0.67m | 3:28AM0.77m | 3:44PM0.66m | 4:54AM0.66m | 4:58PM0.59m | |||||||||||||||||||
 |  | | |  |  | | | |  |  | | |  |  |  | | | |  |  | | |  | |
 | 7:20 | — | — | — | — | — | — | — | 7:20 | — | — | — | — | — | — | — | 7:22 | — | — | — | — | — | — | 7:22 |
 | — | — | — | — | 5:49 | — | — | — | — | — | — | — | 5:49 | — | — | — | — | — | — | — | 5:47 | — | — | 5:46 |
— | — | — | — | — | — | — | — | — | 1 | 1 | 2 | 4 | 2 | 1 | 1 | — | 2 | 3 | 6 | 18 | 4 | 2 | 7 | |
Temp °C | 13 | 13 | 16 | 18 | 16 | 16 | 16 | 15 | 15 | 12 | 15 | 12 | 12 | 13 | 13 | 13 | 12 | 11 | 18 | 17 | 17 | 18 | 17 | 17 |
11 | 10 | 14 | 16 | 13 | 14 | 14 | 13 | 10 | 2 | 5 | 5 | 2 | 0 | 1 | 3 | 5 | 6 | 4 | 7 | 8 | 8 | 8 | 9 | |
Swell 1 Height (m) Direction Period (s) | SE 13 | SE 13 | SE 13 | SE 12 | SE 12 | SE 12 | SE 12 | SE 12 | SE 12 | SE 11 | SE 11 | SE 11 | SE 11 | SE 11 | SE 11 | SW 12 | SW 12 | SW 12 | SW 12 | S 9 | S 9 | SE 12 | SE 12 | SSW 14 |
 kJ | 2740 | 2522 | 2201 | 1848 | 1565 | 1358 | 1169 | 1149 | 897 | 726 | 534 | 429 | 263 | 194 | 165 | 1112 | 635 | 456 | 428 | 78 | 39 | 37 | 38 | 357 |
Swell 2 Height (m) Direction Period (s) | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 12 | SW 13 | SW 9 | SW 12 | SSE 15 | SSW 12 | S 9 | S 9 | S 9 | S 9 | SE 12 | SE 12 | SSE 10 | — | SE 12 |
| kJ | 297 | 251 | 251 | 248 | 241 | 151 | 114 | 114 | 116 | 153 | 167 | 188 | 181 | 21 | 29 | 157 | 230 | 194 | 160 | 52 | 52 | 31 | — | 23 |
Swell 3 Height (m) Direction Period (s) | — | — | WSW 13 | SW 15 | — | W 5 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | — | SW 12 | SSE 15 | — | — | SE 11 | SSW 14 | SSW 14 | SSW 14 | SE 10 | — | — | — | — |
| kJ | — | — | 390 | 410 | — | 8 | 59 | 34 | 34 | 35 | — | 157 | 22 | — | — | 92 | 183 | 321 | 264 | 15 | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | WNW 7 | WNW 4 | WSW 9 | W 5 | WSW 9 | WSW 10 | WSW 11 | W 5 | WNW 4 | NNW 4 | NW 4 | WSW 13 | WSW 14 | WSW 13 | SW 13 | SW 13 |
| kJ | — | — | — | — | — | — | — | — | 10 | 16 | 391 | 60 | 533 | 1040 | 1584 | 73 | 38 | 13 | 21 | 2472 | 3834 | 3398 | 3087 | 2496 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 76 | 76 | 65 | 76 | 110 | 103 | 76 | 65 | 208 | 208 | 227 | 296 | 426 | 437 | 908 | 1031 | 208 | 208 | 737 | 863 | 851 | 296 | 161 | 161 |
Best forecast wave conditions in Overberg | ||||||||||||||||||||||||
Best forecast wave conditions in South Africa | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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