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Surf Forecasts:
Arniston surfForecast / Overberg / South Africa
48hr Weather and Surf, issued 1 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 9PM is: 2.2m 14s primary swell from a South direction and 1.2m 15s secondary swell from a Southwest direction (forecast issued at 01:00pm May 15). The wind direction is predicted to be offshore and the swell rating is 11.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (15 May) | 8ft (2.5m) | 14s |
| Afternoon (15 May) | 8ft (2.5m) | 14s |
| Evening (15 May) | 7ft (2.2m) | 14s |
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 19°C on Fri afternoon, min 15°C on Sat morning). Wind will be generally light. | ||||||||||||||||||||||||
Fri 15 | Saturday 16 | Sunday 17 | Mon 18 | |||||||||||||||||||||
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 |    |    |    |    | ||||||||||||||||||||
S 14 | S 14 | 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 | S 11 | S 11 | S 11 | S 11 | SW 14 | SW 14 | SW 13 | SW 13 | SW 14 | |
2487 | 2452 | 2349 | 1755 | 1530 | 1346 | 1077 | 932 | 759 | 638 | 547 | 538 | 456 | 438 | 345 | 284 | 235 | 184 | 184 | 195 | 181 | 176 | 176 | 238 | |
Wind (km/h) | ||||||||||||||||||||||||
off | cross-off | cross-off | cross-off | glassy | cross | cross-on | cross-on | cross-on | on | on | cross-on | cross-on | cross-on | glassy | glassy | cross | cross | cross | cross-on | cross-on | cross-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 | 8:05AM0.04m | 8:13PM0.17m | 8:47AM-0.03m | 8:58PM0.13m | 9:30AM-0.03m | 9:44PM0.14m | ||||||||||||||||||
 | | |  |  | | |  | | | | | | | | | | | | | | | | | |
 | — | — | — | — | — | — | 7:26 | — | — | — | — | — | — | — | 7:26 | — | — | — | — | — | — | — | 7:26 | — |
 | — | — | 5:45 | — | — | — | — | — | — | — | 5:44 | — | — | — | — | — | — | — | 5:43 | — | — | — | — | 5:43 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 18 | 19 | 18 | 18 | 17 | 16 | 16 | 15 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 |
15 | 16 | 15 | 17 | 17 | 15 | 14 | 12 | 12 | 12 | 13 | 13 | 15 | 16 | 16 | 16 | 16 | 15 | 16 | 17 | 17 | 17 | 18 | 17 | |
Swell 1 Height (m) Direction Period (s) | S 14 | S 14 | 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 | S 11 | S 11 | S 11 | S 11 | S 10 | ESE 6 | ESE 7 | SW 13 | SW 14 |
 kJ | 2487 | 2452 | 2349 | 1755 | 1530 | 1346 | 1077 | 932 | 759 | 638 | 547 | 538 | 456 | 438 | 345 | 284 | 235 | 184 | 184 | 135 | 48 | 51 | 176 | 238 |
Swell 2 Height (m) Direction Period (s) | SW 15 | SW 15 | 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 12 | SW 12 | ESE 6 | ESE 6 | ESE 6 | ESE 6 | S 10 | SW 13 | ESE 7 | E 7 |
| kJ | 83 | 145 | 147 | 557 | 668 | 581 | 492 | 457 | 335 | 256 | 217 | 190 | 202 | 166 | 124 | 124 | 44 | 55 | 45 | 45 | 133 | 176 | 48 | 45 |
Swell 3 Height (m) Direction Period (s) | SW 16 | SW 15 | SW 15 | WSW 11 | — | — | — | — | — | — | — | — | SW 13 | SW 13 | S 13 | ESE 6 | SW 13 | S 13 | SW 14 | SW 14 | SW 14 | S 10 | S 10 | S 10 |
| kJ | 155 | 183 | 269 | 649 | — | — | — | — | — | — | — | — | 144 | 142 | 3 | 24 | 132 | 92 | 164 | 195 | 181 | 68 | 75 | 78 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | E 3 | E 4 | E 4 | E 4 | E 4 | — | — | — | — | — | — | — | — | S 4 | SSE 4 |
| kJ | — | — | — | — | — | — | — | — | — | 5 | 9 | 16 | 7 | 7 | — | — | — | — | — | — | — | — | 3 | 5 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 76 | 76 | 93 | 76 | 76 | 76 | 76 | 81 | 81 | 81 | 81 | 81 | 76 | 76 | 0 | 0 | 81 | 81 | 81 | 81 | 81 | 81 | 81 | 81 |
Best forecast wave conditions in Overberg | ||||||||||||||||||||||||
Best forecast wave conditions in South Africa | ||||||||||||||||||||||||
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