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Surf Forecasts:
Arniston surfForecast / Overberg / South Africa
48hr Weather and Surf, issued 7 pm Wednesday 20 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
17.0° C
(Which is normal for this time of year)How big are the waves at Arniston today?
The current surf forecast for Arniston at 3AM is: 2.5m 9s primary swell from a East-southeast direction and 2.2m 9s secondary swell from a East-southeast direction, 0.4m 11s secondary swell from a Southeast direction (forecast issued at 07:00pm May 20). The wind direction is predicted to be cross-shore and the swell rating is 11.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 May) | 7ft (2.1m) | 9s |
| Afternoon (21 May) | 5.5ft (1.7m) | 9s |
| Evening (21 May) | 5ft (1.5m) | 9s |
Table - waves today at Arniston. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastSome drizzle, heaviest during Fri afternoon. Warm (max 20°C on Thu afternoon, min 16°C on Thu night). Winds decreasing (fresh winds from the W on Thu night, light winds from the NW by Sat morning). | ||||||||||||||||||||||||
Wed 20 | Thursday 21 | Friday 22 | Sat 23 | |||||||||||||||||||||
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 | 5 AM | 8 AM | 11 AM | 2 PM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
ESE 8 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 8 | ESE 8 | E 8 | E 8 | SSW 16 | SSW 7 | SSW 16 | SW 15 | SW 15 | SW 14 | SW 14 | SW 13 | SSW 13 | |
958 | 934 | 803 | 908 | 730 | 747 | 603 | 513 | 433 | 371 | 268 | 217 | 180 | 140 | 137 | 175 | 279 | 220 | 223 | 217 | 211 | 203 | 170 | 109 | |
Wind (km/h) | ||||||||||||||||||||||||
on | on | cross-on | cross-on | off | off | cross-off | cross-off | cross-off | cross-off | off | off | off | off | cross-off | cross-off | cross-off | cross-off | off | off | cross-off | off | off | cross-on | |
High Tide | 6:07PM1.67m | 6:25AM1.56m | 7:07PM1.57m | 7:30AM1.40m | 8:20PM1.50m | 8:52AM1.30m | ||||||||||||||||||
Low Tide | 00:21AM0.42m | 12:45PM0.38m | 1:30AM0.54m | 1:49PM0.51m | 2:54AM0.61m | |||||||||||||||||||
 |  |  | | |  | | | | |  | | |  | |  | | | | | | | | | |
 | — | — | — | — | 7:28 | — | — | — | — | — | — | — | 7:30 | — | — | — | — | — | — | — | 7:31 | — | — | — |
 | 5:40 | — | — | — | — | — | — | — | 5:40 | — | — | — | — | — | — | — | 5:39 | — | — | — | — | — | — | 5:39 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | |
Temp °C | 18 | 18 | 17 | 17 | 17 | 17 | 18 | 20 | 19 | 17 | 16 | 16 | 16 | 16 | 18 | 17 | 17 | 16 | 16 | 16 | 16 | 16 | 17 | 17 |
14 | 15 | 16 | 17 | 16 | 16 | 15 | 16 | 16 | 12 | 12 | 13 | 13 | 13 | 15 | 14 | 15 | 15 | 15 | 15 | 14 | 14 | 16 | 17 | |
Swell 1 Height (m) Direction Period (s) | SE 12 | SSW 15 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 8 | ESE 8 | E 8 | E 8 | E 8 | SSW 7 | S 7 | S 7 | S 7 | S 7 | SW 14 | SW 13 | SSW 13 |
 kJ | 65 | 42 | 803 | 698 | 730 | 747 | 603 | 513 | 433 | 371 | 268 | 217 | 180 | 140 | 137 | 84 | 156 | 155 | 124 | 91 | 69 | 203 | 170 | 109 |
Swell 2 Height (m) Direction Period (s) | SW 12 | SW 12 | SSE 12 | SE 11 | SSW 14 | SSW 13 | SSW 13 | SW 12 | SSW 12 | SW 12 | SW 12 | SSW 18 | SSW 18 | SSW 18 | SSW 17 | SSW 16 | E 8 | SSW 16 | SW 15 | SW 15 | SW 14 | S 6 | S 6 | SW 9 |
| kJ | 22 | 21 | 53 | 33 | 71 | 69 | 67 | 40 | 58 | 37 | 37 | 128 | 124 | 123 | 111 | 175 | 80 | 220 | 223 | 217 | 211 | 37 | 25 | 38 |
Swell 3 Height (m) Direction Period (s) | SSW 15 | SW 14 | SSW 14 | SSW 14 | SSW 8 | S 22 | SE 11 | SW 21 | SSW 20 | SSW 20 | SSW 19 | SW 12 | SW 11 | S 11 | SW 11 | SW 12 | SW 16 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | S 6 |
| kJ | 21 | 54 | 41 | 39 | 14 | 9 | 5 | 18 | 38 | 75 | 74 | 36 | 33 | 21 | 33 | 21 | 261 | 60 | 43 | 30 | 30 | 30 | 19 | 17 |
Wind waves Height (m) Direction Period (s) | ESE 8 | ESE 9 | — | ESE 9 | — | — | WNW 3 | WSW 3 | W 3 | WSW 4 | WSW 4 | W 3 | W 3 | W 3 | SW 6 | SSW 7 | SSW 7 | — | — | — | — | W 5 | W 5 | — |
| kJ | 958 | 934 | — | 908 | — | — | 2 | 3 | 5 | 13 | 13 | 8 | 8 | 6 | 33 | 88 | 279 | — | — | — | — | 11 | 11 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 81 | 81 | 76 | 76 | 19 | 19 | 65 | 65 | 19 | 65 | 0 | 0 | 0 | 0 | 103 | 103 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 81 |
Best forecast wave conditions in Overberg | ||||||||||||||||||||||||
Best forecast wave conditions in South Africa | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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