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Surf Forecasts:
Arniston surfForecast / Overberg / South Africa
48hr Weather and Surf, issued 1 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 5PM is: 2.5m 8s primary swell from a East-southeast direction and 0.3m 12s secondary swell from a Southwest direction, 0.2m 15s secondary swell from a South-southwest direction (forecast issued at 01:00pm May 20). The wind direction is predicted to be onshore.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 May) | 10ft (3.0m) | 8s |
| Afternoon (20 May) | 8ft (2.5m) | 8s |
| Evening (20 May) | 8ft (2.5m) | 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. Very mild (max 19°C on Thu morning, min 15°C on Fri night). Winds decreasing (strong winds from the E on Wed afternoon, light winds from the N by Sat morning). | ||||||||||||||||||||||||
Wed 20 | Thursday 21 | Friday 22 | Sat 23 | |||||||||||||||||||||
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 | 5 AM | 8 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
ESE 8 | ESE 8 | ESE 8 | ESE 9 | 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 | SSW 16 | SSW 16 | SSW 16 | SW 15 | SW 15 | SW 14 | SW 14 | |
913 | 935 | 1003 | 1003 | 926 | 1010 | 793 | 705 | 576 | 502 | 433 | 363 | 328 | 268 | 212 | 176 | 137 | 175 | 226 | 220 | 223 | 217 | 211 | 203 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-on | cross-on | on | on | on | cross-on | off | off | off | cross-off | cross-off | cross-off | off | off | off | off | cross-off | cross-off | cross-off | cross-off | off | off | off | off | |
High Tide | 6:07PM1.67m | 6:25AM1.56m | 7:07PM1.57m | 7:30AM1.40m | 8:20PM1.50m | |||||||||||||||||||
Low Tide | 11:50AM0.25m | 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 |
2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | |
Temp °C | 18 | 18 | 18 | 18 | 17 | 17 | 17 | 17 | 19 | 19 | 18 | 17 | 16 | 16 | 16 | 16 | 18 | 18 | 17 | 17 | 16 | 16 | 15 | 15 |
14 | 12 | 14 | 14 | 16 | 16 | 16 | 16 | 17 | 15 | 16 | 14 | 13 | 13 | 13 | 12 | 14 | 14 | 15 | 15 | 15 | 15 | 14 | 13 | |
Swell 1 Height (m) Direction Period (s) | SSE 12 | SSE 12 | SW 12 | SSW 15 | SSE 12 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 8 | ESE 8 | E 8 | ESE 8 | SSW 7 | SSW 6 | S 6 | S 6 | S 6 | S 6 |
 kJ | 88 | 88 | 22 | 42 | 53 | 926 | 793 | 705 | 576 | 502 | 433 | 363 | 328 | 268 | 212 | 176 | 137 | 109 | 68 | 66 | 64 | 63 | 50 | 36 |
Swell 2 Height (m) Direction Period (s) | SW 12 | SW 12 | SSW 15 | SW 12 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SW 12 | SW 12 | SW 12 | SW 12 | SSW 18 | SSW 18 | SSW 18 | SSW 17 | SSW 16 | E 8 | E 8 | SW 15 | SW 15 | SW 14 | SW 14 |
| kJ | 37 | 22 | 21 | 21 | 41 | 78 | 71 | 69 | 67 | 40 | 37 | 37 | 37 | 128 | 124 | 123 | 111 | 175 | 80 | 58 | 223 | 217 | 211 | 203 |
Swell 3 Height (m) Direction Period (s) | S 16 | SSW 15 | SSW 15 | SW 14 | WSW 11 | SE 11 | WSW 11 | S 22 | S 21 | SW 21 | SSW 20 | SSW 20 | SSW 19 | SW 12 | SW 11 | SW 11 | SW 11 | SW 11 | SSW 16 | SSW 16 | E 8 | E 8 | E 8 | E 8 |
| kJ | 20 | 23 | 43 | 54 | 12 | 31 | 11 | 9 | 9 | 18 | 38 | 75 | 74 | 36 | 33 | 32 | 33 | 33 | 226 | 220 | 58 | 44 | 44 | 30 |
Wind waves Height (m) Direction Period (s) | ESE 8 | ESE 8 | ESE 8 | ESE 9 | ESE 9 | E 9 | — | — | WNW 3 | WSW 3 | WSW 3 | WSW 3 | W 3 | W 3 | W 3 | W 3 | W 3 | SW 5 | SW 7 | — | — | — | — | — |
| kJ | 913 | 935 | 1003 | 1003 | 926 | 1010 | — | — | 2 | 2 | 3 | 6 | 8 | 7 | 4 | 5 | 5 | 28 | 111 | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 81 | 81 | 81 | 81 | 76 | 76 | 19 | 19 | 0 | 65 | 19 | 65 | 0 | 0 | 0 | 103 | 110 | 135 | 135 | 0 | 0 | 0 | 0 | 0 |
Best forecast wave conditions in Overberg | ||||||||||||||||||||||||
Best forecast wave conditions in South Africa | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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