- Forecast
- Maps
- Live
- Weather State
- Spot Information
Surf Forecasts:
Arniston surfForecast / Overberg / South Africa
48hr Weather and Surf, issued 1 pm Sunday 17 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
17.2° 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: 0.9m 11s primary swell from a South direction and 0.7m 6s secondary swell from a East-southeast direction (forecast issued at 01:00pm May 17). The wind direction is predicted to be cross-onshore.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 May) | 3.5ft (1.1m) | 11s |
| Afternoon (17 May) | 3ft (0.9m) | 11s |
| Evening (17 May) | 2.5ft (0.7m) | 14s |
Table - waves today at Arniston. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 31mm), heaviest during Tue night. Very mild (max 18°C on Mon morning, min 15°C on Tue night). Winds increasing (light winds from the ESE on Sun night, strong winds from the E by Tue afternoon). | ||||||||||||||||||||||||
Sun 17 | Monday 18 | Tuesday 19 | Wed 20 | |||||||||||||||||||||
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 11 | S 11 | S 11 | SW 14 | SW 14 | SW 13 | SW 13 | SW 14 | SW 15 | SW 15 | SW 14 | SSE 8 | S 8 | SSE 8 | SSE 8 | SE 8 | SE 8 | SSE 8 | ESE 8 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | |
235 | 184 | 184 | 195 | 181 | 176 | 176 | 228 | 326 | 309 | 293 | 313 | 252 | 590 | 750 | 824 | 808 | 630 | 1444 | 1755 | 1546 | 1463 | 1488 | 1354 | |
Wind (km/h) | ||||||||||||||||||||||||
cross | cross-on | cross-on | cross-on | on | on | on | on | on | on | on | on | on | on | on | on | cross-on | cross-on | on | on | on | on | cross-on | on | |
High Tide | 3:41PM1.88m | 3:54AM1.99m | 4:26PM1.84m | 4:40AM1.88m | 5:14PM1.77m | 5:30AM1.73m | ||||||||||||||||||
Low Tide | 9:30AM-0.03m | 9:44PM0.14m | 10:14AM0.02m | 10:31PM0.20m | 11:01AM0.12m | 11:23PM0.30m | ||||||||||||||||||
 | | |  |  | | |  |  | |  |  |  | | |  | | | |  |  | | | | |
 | — | — | — | — | — | — | 7:26 | — | — | — | — | — | — | — | 7:28 | — | — | — | — | — | — | — | 7:28 | — |
 | — | — | 5:43 | — | — | — | — | — | — | — | 5:43 | — | — | — | — | — | — | — | 5:42 | — | — | — | — | 5:40 |
— | — | — | — | — | — | — | — | 1 | 1 | — | — | 1 | 1 | — | 1 | 5 | 1 | — | 1 | 10 | 2 | 5 | 1 | |
Temp °C | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 16 | 15 | 18 | 18 | 17 | 17 |
16 | 16 | 16 | 16 | 17 | 17 | 16 | 15 | 15 | 14 | 14 | 13 | 13 | 13 | 13 | 13 | 12 | 11 | 9 | 10 | 12 | 12 | 12 | 14 | |
Swell 1 Height (m) Direction Period (s) | S 11 | S 11 | S 11 | S 10 | S 10 | ESE 6 | SW 13 | SW 14 | SW 15 | SW 15 | SW 14 | SW 14 | S 8 | SW 12 | SW 14 | SW 13 | SW 13 | SSE 8 | SW 13 | SSE 13 | SW 13 | SSE 12 | SW 12 | SW 12 |
 kJ | 235 | 184 | 184 | 135 | 130 | 45 | 176 | 228 | 326 | 309 | 293 | 116 | 252 | 96 | 123 | 113 | 113 | 630 | 108 | 102 | 59 | 104 | 53 | 52 |
Swell 2 Height (m) Direction Period (s) | SW 13 | ESE 6 | ESE 6 | ESE 6 | ESE 6 | SW 13 | ESE 6 | E 6 | SSE 13 | S 13 | S 12 | SSW 13 | SW 13 | SSW 12 | SSW 12 | SSE 15 | SSE 15 | SW 13 | SSE 14 | SW 13 | SSE 13 | SW 13 | SSW 9 | SW 12 |
| kJ | 132 | 30 | 31 | 34 | 44 | 176 | 43 | 41 | 173 | 115 | 104 | 99 | 113 | 61 | 29 | 45 | 42 | 111 | 73 | 60 | 116 | 56 | 17 | 116 |
Swell 3 Height (m) Direction Period (s) | ESE 6 | SW 12 | SW 14 | SW 14 | SW 14 | SSE 14 | S 10 | S 10 | S 13 | S 12 | SSW 8 | SSE 12 | SSW 12 | SSE 16 | SSE 16 | — | SSW 11 | SSE 14 | SW 10 | SSW 10 | SSW 10 | SSW 9 | SSW 9 | SSW 9 |
| kJ | 22 | 71 | 164 | 195 | 181 | 143 | 74 | 77 | 85 | 148 | 37 | 47 | 89 | 26 | 25 | — | 23 | 78 | 25 | 18 | 18 | 17 | 16 | 16 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | SE 6 | SE 6 | SE 6 | SSE 8 | ESE 5 | SSE 8 | SSE 8 | SE 8 | SE 8 | E 7 | ESE 8 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 |
| kJ | — | — | — | — | — | — | — | — | 74 | 75 | 69 | 313 | 77 | 590 | 750 | 824 | 808 | 374 | 1444 | 1755 | 1546 | 1463 | 1488 | 1354 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 81 | 113 | 113 | 81 | 81 | 81 | 81 | 81 | 81 | 191 | 81 | 81 | 192 | 184 | 186 | 191 | 190 | 140 | 144 | 144 | 81 | 81 | 137 | 81 |
Best forecast wave conditions in Overberg | ||||||||||||||||||||||||
Best forecast wave conditions in South Africa | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Arniston surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Nearest