Surf Forecasts:
Arniston surf forecast from 23 Aug 2026:
- Best quality surf: Thursday 27 Aug, 8AM (local time) - 8ft (2.5m), 8s period, E swell with cross-shore winds.
- Most powerful swell: Thursday 27 Aug, 2AM (local time) - 10ft (3.0m), 8s period, E swell with 1,320 kJ wave energy.
- Next surfable swell (1★+): Sunday 23 Aug, 8PM (local time) - 3.5ft (1.1m), 12s period with SW 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 Sunday (Aug 23) at 8PM. The primary swell is predicted to be 1.1m and 12s period with a secondary swell of 0.2m and 13s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Arniston in the next 16 days are 3.0m 8s and forecast to arrive on Thursday (Aug 27) 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 1.4m 4s period and expected on Sunday (Aug 30) at 2AM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Sun 23rd Aug) | 3.5ft (1.1m) 12s |
| Best Surf | 8AM (Thu 27th Aug) | 8ft (2.5m) 8s |
| Most Powerful | 2AM (Thu 27th Aug) | 10ft (3.0m) 8s |
Table - best surf conditions forecast for Arniston over the next 16 days.
Short Range ForecastSome drizzle, heaviest during Tue night. Very mild (max 14°C on Sun afternoon, min 11°C on Sun night). Winds increasing (calm on Mon morning, strong winds from the E by Tue night). | Days 4-6 Weather SummaryMostly dry. Warm (max 22°C on Fri night, min 14°C on Wed night). Winds decreasing (near gales from the E on Wed afternoon, calm by Thu night). | ||||||||||||||||||||
Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | |||||||||||||||
AM | PM | 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) | SSW 11 | SSW 11 | SW 12 | SSW 11 | SSW 14 | SSW 14 | SSW 16 | SSW 14 | SSW 13 | ESE 6 | E 7 | E 8 | ESE 8 | S 11 | S 11 | S 11 | ESE 9 | SSE 13 | SSE 11 | WSW 8 | E 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 297 | 214 | 325 | 167 | 712 | 1010 | 1225 | 886 | 298 | 442 | 766 | 1320 | 523 | 482 | 476 | 338 | 289 | 431 | 173 | 277 | 46 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-on | off | glassy | cross-on | on | on | on | on | cross-on | cross-on | cross-on | cross | cross | glassy | cross-on | on | cross-off | cross-off | cross-off | cross-off |
High Tide | 1:09PM1.30m | 1:10AM1.39m | 1:43PM1.46m | 1:45AM1.53m | 2:11PM1.61m | 2:15AM1.65m | 2:38PM1.75m | 2:44AM1.75m | 3:05PM1.87m | 3:13AM1.82m | 3:32PM1.96m | 3:42AM1.86m | 3:59PM2.01m | 4:12AM1.86m | |||||||
Low Tide | 7:18PM0.70m | 7:36AM0.51m | 7:51PM0.56m | 8:03AM0.37m | 8:19PM0.42m | 8:29AM0.25m | 8:47PM0.30m | 8:54AM0.15m | 9:14PM0.19m | 9:20AM0.08m | 9:41PM0.12m | 9:46AM0.05m | 10:10PM0.08m | ||||||||
 | |  | | |  | | |  |  | | | |  | | | |  | | | | |
 | 7:09 | — | — | 7:09 | — | — | 7:07 | — | — | 7:05 | — | — | 7:05 | — | — | 7:03 | — | — | 7:01 | — | — |
 | — | 6:13 | — | — | 6:14 | — | — | 6:15 | — | — | 6:15 | — | — | 6:15 | — | — | 6:16 | — | — | 6:16 | — |
mm | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | 2 |
Temp °C | 13 | 14 | 13 | 13 | 14 | 13 | 13 | 14 | 14 | 15 | 15 | 15 | 18 | 20 | 16 | 17 | 18 | 22 | 26 | 24 | 16 |
Feels °C | 12 | 12 | 13 | 13 | 13 | 12 | 11 | 12 | 11 | 7 | 6 | 6 | 17 | 19 | 15 | 14 | 15 | 18 | 20 | 17 | 10 |
Swell 1 Height (m) Direction Period (s) | SSW 11 | SSW 11 | SW 12 | SSW 11 | SSW 14 | SSW 14 | SSW 16 | SSW 14 | SSW 13 | SSW 12 | SSW 12 | S 12 | ESE 8 | ESE 8 | ESE 9 | ESE 9 | ESE 9 | SSE 13 | ESE 6 | SSE 12 | E 9 |
| kJ | 297 | 214 | 325 | 167 | 712 | 1010 | 1225 | 886 | 298 | 293 | 486 | 456 | 523 | 434 | 366 | 283 | 289 | 431 | 54 | 140 | 39 |
Swell 2 Height (m) Direction Period (s) | SW 13 | SW 13 | E 8 | WSW 12 | E 9 | W 11 | E 9 | E 10 | SW 13 | S 16 | S 16 | S 15 | S 11 | S 11 | S 11 | S 11 | S 11 | E 9 | SSE 11 | E 8 | SSE 11 |
| kJ | 180 | 167 | 1 | 56 | 2 | 121 | 2 | 2 | 190 | 326 | 318 | 113 | 502 | 482 | 476 | 338 | 227 | 151 | 173 | 51 | 46 |
Swell 3 Height (m) Direction Period (s) | E 8 | SSW 15 | — | S 14 | E 10 | — | — | — | S 16 | SW 13 | SSW 16 | WSW 12 | SSE 15 | WSW 12 | WSW 11 | SSE 15 | SSE 14 | SW 14 | E 8 | ESE 6 | — |
| kJ | 1 | 42 | — | 101 | 2 | — | — | — | 134 | 82 | 441 | 15 | 75 | 13 | 12 | 42 | 156 | 74 | 69 | 19 | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | SE 5 | ESE 6 | E 7 | E 8 | — | — | W 3 | — | — | E 4 | — | WSW 8 | WSW 4 |
| kJ | — | — | — | — | — | — | — | — | 107 | 442 | 766 | 1320 | — | — | 5 | — | — | 15 | — | 277 | 67 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 135 | 0 | 0 | 81 | 81 | 81 | 246 | 81 | 140 | 137 | 83 | 65 | 19 | 0 | 81 | 81 | 0 | 0 | 174 | 0 |
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.
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