Surf Forecasts:
Arniston surf forecast from 24 Aug 2026:
- Best quality surf: Thursday 27 Aug, 8AM (local time) - 10ft (3.0m), 9s period, E swell with cross-shore winds.
- Most powerful swell: Thursday 27 Aug, 2AM (local time) - 10ft (3.0m), 8s period, E swell with 1,389 kJ wave energy.
- Next surfable swell (1★+): Thursday 27 Aug, 8AM (local time) - 10ft (3.0m), 9s period with E 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 Thursday (Aug 27) at 8AM. The primary swell is predicted to be 3.0m and 9s period with a secondary swell of 2.4m and 8s. Another secondary swell of 1.3m and 12s is also forecast. The wind is predicted to be cross-shore 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 1.3m 4s period and expected on Saturday (Aug 29) at 2PM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Thu 27th Aug) | 10ft (3.0m) 9s |
| Best Surf | 8AM (Thu 27th Aug) | 10ft (3.0m) 9s |
| 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 16°C on Wed afternoon, min 11°C on Mon morning). Winds increasing (calm on Mon morning, strong winds from the E by Wed afternoon). | Days 4-6 Weather SummaryMostly dry. Warm (max 22°C on Thu afternoon, min 14°C on Thu morning). Winds increasing (calm on Thu night, fresh winds from the SW by Sat afternoon). | ||||||||||||||||||||
Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | |||||||||||||||
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 10 | SSW 14 | SSW 14 | SSW 15 | SSW 14 | SSW 13 | ESE 6 | ESE 7 | E 8 | ESE 8 | ESE 9 | ESE 9 | ESE 10 | E 10 | ESE 9 | E 9 | E 9 | SW 12 | SSW 12 | SSW 11 | SW 12 |
Wave Graph  | |||||||||||||||||||||
 kJ | 158 | 293 | 1130 | 1209 | 886 | 451 | 375 | 659 | 1389 | 660 | 506 | 521 | 586 | 499 | 265 | 173 | 83 | 533 | 328 | 275 | 156 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-on | on | cross-on | on | cross-on | on | cross-on | cross-on | cross-on | glassy | glassy | cross-on | on | cross-off | glassy | cross-off | off | cross | cross-on | cross-on |
High Tide | 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 | 4:28PM2.01m | 4:43AM1.82m | |||||||
Low Tide | 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 | 10:14AM0.06m | 10:40PM0.09m | ||||||||
 | |  | | |  |  |  |  | | | | | | | | |  | |  |  | |
 | 7:09 | — | — | 7:07 | — | — | 7:05 | — | — | 7:05 | — | — | 7:03 | — | — | 7:01 | — | — | 7:01 | — | — |
 | — | 6:14 | — | — | 6:15 | — | — | 6:15 | — | — | 6:15 | — | — | 6:16 | — | — | 6:16 | — | — | 6:17 | — |
mm | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | 3 | 1 |
Temp °C | 13 | 14 | 13 | 13 | 14 | 15 | 15 | 16 | 15 | 17 | 22 | 18 | 17 | 19 | 22 | 17 | 17 | 15 | 16 | 15 | 15 |
Feels °C | 13 | 13 | 12 | 11 | 12 | 12 | 7 | 8 | 7 | 15 | 21 | 18 | 14 | 18 | 20 | 17 | 12 | 13 | 13 | 11 | 11 |
Swell 1 Height (m) Direction Period (s) | SSW 10 | SSW 11 | SSW 14 | SSW 15 | SSW 14 | SSW 13 | SSW 12 | SSW 12 | S 12 | ESE 8 | ESE 9 | ESE 9 | ESE 10 | E 10 | ESE 9 | E 9 | E 9 | SW 12 | SSW 12 | SSW 11 | SSW 9 |
| kJ | 158 | 234 | 1130 | 1209 | 886 | 451 | 232 | 374 | 390 | 660 | 506 | 521 | 586 | 499 | 265 | 173 | 83 | 533 | 328 | 275 | 156 |
Swell 2 Height (m) Direction Period (s) | SW 12 | SSW 14 | W 11 | E 9 | E 10 | SW 12 | S 16 | S 16 | S 15 | S 11 | S 11 | S 11 | S 11 | S 11 | S 10 | SSE 11 | SSE 10 | E 11 | E 10 | E 11 | SW 12 |
| kJ | 68 | 293 | 121 | 2 | 2 | 187 | 251 | 318 | 72 | 348 | 416 | 348 | 284 | 181 | 100 | 121 | 63 | 112 | 141 | 114 | 147 |
Swell 3 Height (m) Direction Period (s) | S 14 | E 9 | — | — | — | S 16 | SW 13 | SSW 16 | SW 12 | SSW 12 | WSW 12 | SW 16 | SW 16 | SSE 14 | SSE 13 | SW 13 | SSE 13 | SSE 12 | WSW 10 | WSW 13 | E 11 |
| kJ | 101 | 2 | — | — | — | 83 | 83 | 446 | 38 | 29 | 14 | 10 | 39 | 74 | 127 | 59 | 35 | 56 | 63 | 106 | 114 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | ENE 2 | ESE 6 | ESE 7 | E 8 | — | — | — | — | — | — | WSW 7 | WSW 5 | — | — | — | — |
| kJ | — | — | — | — | — | 1 | 375 | 659 | 1389 | — | — | — | — | — | — | 36 | 65 | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 81 | 81 | 81 | 246 | 144 | 144 | 140 | 93 | 65 | 0 | 0 | 81 | 81 | 149 | 0 | 19 | 0 | 107 | 135 | 81 |
Best forecast wave conditions in Overberg | |||||||||||||||||||||
Best forecast wave conditions in South Africa | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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.
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