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Surf Forecasts:
Arniston surfForecast / Overberg / South Africa
48hr Weather and Surf, issued 7 pm Friday 15 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
17.5° C
(Which is normal for this time of year)How big are the waves at Arniston today?
The current surf forecast for Arniston at 1AM is: 2.0m 13s primary swell from a South direction and 1.2m 14s secondary swell from a Southwest direction (forecast issued at 07:00pm May 15). The wind direction is predicted to be glassy and the swell rating is 4.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (16 May) | 5.5ft (1.7m) | 13s |
| Afternoon (16 May) | 5ft (1.5m) | 12s |
| Evening (16 May) | 4.5ft (1.4m) | 12s |
Table - waves today at Arniston. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Very mild (max 18°C on Fri night, min 16°C on Fri night). Wind will be generally light. | ||||||||||||||||||||||||
Fri 15 | Saturday 16 | Sunday 17 | Mon 18 | |||||||||||||||||||||
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 |    |    |    |    | ||||||||||||||||||||
S 14 | S 14 | S 13 | S 13 | S 13 | S 13 | S 12 | S 12 | S 12 | S 12 | S 12 | SSE 11 | S 11 | SSE 11 | S 11 | S 11 | S 11 | SW 14 | SW 14 | SW 13 | SW 13 | SW 16 | SW 15 | SW 14 | |
2349 | 1755 | 1530 | 1346 | 1077 | 932 | 738 | 638 | 547 | 538 | 456 | 438 | 338 | 356 | 235 | 184 | 182 | 195 | 181 | 176 | 176 | 291 | 258 | 305 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | cross-off | glassy | glassy | cross-on | cross-on | cross-on | on | on | on | cross-on | cross-on | glassy | glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | on | on | |
High Tide | 2:15PM1.81m | 2:25AM2.03m | 2:58PM1.87m | 3:09AM2.04m | 3:41PM1.88m | 3:54AM1.99m | ||||||||||||||||||
Low Tide | 8:13PM0.17m | 8:47AM-0.03m | 8:58PM0.13m | 9:30AM-0.03m | 9:44PM0.14m | 10:14AM0.02m | ||||||||||||||||||
 |  |  | | |  | | | | | | | | | | | | | |  | | | |  | |
 | — | — | — | — | 7:26 | — | — | — | — | — | — | — | 7:26 | — | — | — | — | — | — | — | 7:26 | — | — | — |
 | 5:45 | — | — | — | — | — | — | — | 5:44 | — | — | — | — | — | — | — | 5:43 | — | — | — | — | — | — | 5:43 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 18 | 18 | 17 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 18 | 18 |
15 | 17 | 17 | 16 | 15 | 14 | 13 | 13 | 13 | 14 | 15 | 16 | 16 | 17 | 17 | 16 | 17 | 17 | 17 | 16 | 16 | 16 | 15 | 14 | |
Swell 1 Height (m) Direction Period (s) | S 14 | S 14 | S 13 | S 13 | S 13 | S 13 | S 12 | S 12 | S 12 | S 12 | S 12 | SSE 11 | S 11 | SSE 11 | S 11 | S 11 | ESE 6 | ESE 6 | S 10 | SW 13 | SW 13 | SW 16 | SW 15 | SW 14 |
 kJ | 2349 | 1755 | 1530 | 1346 | 1077 | 932 | 738 | 638 | 547 | 538 | 456 | 438 | 338 | 356 | 235 | 184 | 64 | 66 | 133 | 176 | 176 | 291 | 258 | 305 |
Swell 2 Height (m) Direction Period (s) | SW 15 | SW 15 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SW 12 | SW 12 | SW 13 | SW 13 | SW 13 | SW 13 | SW 12 | ESE 6 | ESE 6 | S 11 | S 10 | ESE 6 | ESE 6 | ESE 6 | E 6 | SSE 13 | S 6 |
| kJ | 147 | 557 | 668 | 581 | 492 | 457 | 335 | 256 | 217 | 190 | 168 | 166 | 134 | 124 | 33 | 62 | 182 | 135 | 47 | 43 | 43 | 31 | 173 | 31 |
Swell 3 Height (m) Direction Period (s) | SW 15 | WSW 11 | — | — | — | — | — | — | — | — | SW 13 | SW 13 | E 4 | S 13 | SW 13 | SW 12 | SW 14 | SW 14 | SW 14 | SSE 13 | S 10 | S 6 | S 6 | S 13 |
| kJ | 269 | 649 | — | — | — | — | — | — | — | — | 144 | 142 | 2 | 4 | 132 | 71 | 164 | 195 | 181 | 141 | 74 | 24 | 31 | 115 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | E 3 | E 3 | E 4 | E 4 | E 4 | — | — | — | — | — | — | — | S 4 | — | — | E 7 | E 7 |
| kJ | — | — | — | — | — | — | — | 3 | 8 | 10 | 7 | 4 | — | — | — | — | — | — | — | 5 | — | — | 32 | 43 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 81 | 76 | 76 | 0 | 76 | 76 | 81 | 81 | 81 | 81 | 81 | 81 | 0 | 0 | 81 | 113 | 113 | 81 | 81 | 81 | 81 | 81 | 81 | 192 |
Best forecast wave conditions in Overberg | ||||||||||||||||||||||||
Best forecast wave conditions in South Africa | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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