Surf Forecasts:
Arniston surf forecast from 6 Aug 2026:
- Best quality surf: Friday 7 Aug, 2PM (local time) - 7ft (2.1m), 15s period, SSW swell with cross-onshore winds.
- Most powerful swell: Tuesday 11 Aug, 2AM (local time) - 8ft (2.5m), 13s period, SSE swell with 2,338 kJ wave energy.
- Next surfable swell (1★+): Friday 7 Aug, 2PM (local time) - 7ft (2.1m), 15s period with SSW swell.
Best Forecast Surf Conditions for Arniston this week:
The surf forecast for Arniston over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Aug 07) at 2PM. The primary swell is predicted to be 2.1m and 15s period with a secondary swell of 0.4m and 10s. Another secondary swell of 0.7m and 4s is also forecast. The wind is predicted to be cross-onshore as the swell arrives.
The most powerful waves expected at Arniston in the next 16 days are 2.5m 13s and forecast to arrive on Tuesday (Aug 11) at 2AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Saturday (Aug 08) at 8AM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2PM (Fri 7th Aug) | 7ft (2.1m) 15s |
| Best Surf | 2PM (Fri 7th Aug) | 7ft (2.1m) 15s |
| Most Powerful | 2AM (Tue 11th Aug) | 8ft (2.5m) 13s |
Table - best surf conditions forecast for Arniston over the next 16 days.
Short Range ForecastLight rain (total 9mm), mostly falling on Sat night. Very mild (max 17°C on Sat afternoon, min 11°C on Sun morning). Winds increasing (light winds from the ENE on Fri night, strong winds from the S by Sun afternoon). | Days 5-7 Weather SummarySome drizzle, heaviest during Sun night. Warm (max 20°C on Wed afternoon, min 12°C on Tue morning). Winds decreasing (strong winds from the E on Tue afternoon, light winds from the ENE by Wed afternoon). | ||||||||||||||||||
Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | ||||||||||||||
Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||
Wave Height (m) Direction Period (s) | SW 15 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 12 | S 8 | SSE 8 | S 10 | S 10 | SSE 13 | SSW 12 | ESE 7 | E 8 | SSW 19 | SSW 18 | SSW 19 |
Wave Graph  | |||||||||||||||||||
 kJ | 606 | 1578 | 1950 | 1415 | 943 | 2053 | 1430 | 521 | 545 | 385 | 767 | 873 | 2338 | 569 | 571 | 973 | 943 | 817 | 983 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | cross-on | cross-off | off | cross | cross | cross | cross-on | cross-on | cross-on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross |
High Tide | 8:41PM1.47m | 9:49AM1.24m | 10:26PM1.42m | 11:42AM1.31m | 00:04AM1.51m | 12:57PM1.48m | 1:12AM1.65m | 1:50PM1.68m | 2:04AM1.79m | 2:35PM1.86m | 2:48AM1.88m | 3:15PM1.99m | 3:29AM1.93m | ||||||
Low Tide | 3:25AM0.59m | 3:44PM0.70m | 5:17AM0.57m | 5:44PM0.65m | 6:42AM0.43m | 7:05PM0.49m | 7:40AM0.27m | 8:02PM0.32m | 8:25AM0.12m | 8:48PM0.17m | 9:05AM0.02m | 9:29PM0.07m | |||||||
 |  | |  |  |  |  | |  |  | | | | | | | | | | |
 | — | 7:28 | — | — | 7:26 | — | — | 7:26 | — | — | 7:24 | — | — | 7:24 | — | — | 7:22 | — | — |
 | 6:00 | — | 6:01 | — | — | 6:01 | — | — | 6:02 | — | — | 6:04 | — | — | 6:04 | — | — | 6:05 | — |
mm | — | — | — | — | — | 1 | 3 | 4 | 1 | 1 | — | — | — | — | — | — | — | — | — |
Temp °C | 14 | 13 | 15 | 15 | 14 | 17 | 13 | 12 | 13 | 13 | 13 | 14 | 14 | 13 | 13 | 14 | 14 | 20 | 21 |
Feels °C | 10 | 7 | 12 | 14 | 9 | 12 | 6 | 3 | 4 | 6 | 7 | 7 | 7 | 7 | 4 | 8 | 8 | 14 | 15 |
Swell 1 Height (m) Direction Period (s) | SSW 11 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SW 14 | SSW 12 | SW 12 | SSW 12 | SW 11 | S 10 | SSE 13 | SSW 12 | SSW 11 | SSW 11 | SSW 19 | SSW 18 | E 8 |
| kJ | 521 | 1578 | 1950 | 1415 | 943 | 2053 | 327 | 521 | 421 | 371 | 147 | 873 | 2338 | 569 | 331 | 194 | 943 | 817 | 647 |
Swell 2 Height (m) Direction Period (s) | SW 15 | E 10 | ESE 10 | E 5 | E 6 | E 6 | ESE 9 | E 9 | E 9 | E 10 | E 10 | S 14 | WSW 11 | S 26 | SW 24 | SSW 22 | S 10 | S 10 | SSW 19 |
| kJ | 606 | 47 | 31 | 11 | 29 | 22 | 28 | 37 | 24 | 17 | 17 | 297 | 103 | 13 | 92 | 589 | 49 | 31 | 983 |
Swell 3 Height (m) Direction Period (s) | E 9 | — | — | ESE 9 | E 9 | E 9 | — | — | — | S 13 | S 13 | E 10 | — | SW 26 | WSW 10 | — | SSW 11 | SW 10 | SSW 16 |
| kJ | 45 | — | — | 29 | 16 | 15 | — | — | — | 14 | 14 | 16 | — | 27 | 20 | — | 47 | 26 | 436 |
Wind waves Height (m) Direction Period (s) | — | ENE 4 | E 4 | — | W 3 | — | SSW 13 | S 7 | S 8 | SSE 8 | S 10 | — | E 10 | ESE 6 | ESE 7 | E 8 | E 8 | ESE 9 | E 9 |
| kJ | — | 13 | 18 | — | 2 | — | 1430 | 475 | 545 | 385 | 767 | — | 17 | 329 | 571 | 973 | 675 | 676 | 928 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 83 | 83 | 133 | 113 | 103 | 183 | 438 | 297 | 2961 | 81 | 107 | 192 | 81 | 139 | 137 | 93 | 76 | 76 | 76 |
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)
Latest Updates
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.
Information about the Arniston Surf forecast
The above surf forecast table for Arniston provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Arniston can be found by selecting the local surf guide option on the grey menu. Our Arniston surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Arniston) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).
Further information to help with frequently asked questions about our surf forecast for Arniston may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.
Are you planning a holiday in Overberg? If you are looking for accommodation near Arniston, camping, hotels and holiday cottages in Overberg, consider staying in Hermanus which is 97 km (60 miles) away.
Nearest