Surf Forecasts:
Arniston surf forecast from 15 Oct 2026:
- Best quality surf: Saturday 17 Oct, 2AM (local time) - 8ft (2.5m), 12s period, WSW swell with cross-offshore winds.
- Most powerful swell: Saturday 17 Oct, 2AM (local time) - 8ft (2.5m), 12s period, WSW swell with 1,689 kJ wave energy.
- Next surfable swell (1★+): Friday 16 Oct, 5AM (local time) - 4.5ft (1.3m), 13s 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 (Oct 16) at 5AM. The primary swell is predicted to be 1.3m and 13s period with a secondary swell of 0.5m and 8s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Arniston in the next 16 days are 2.5m 12s and forecast to arrive on Saturday (Oct 17) at 2AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 5s period and expected on Wednesday (Oct 21) at 5PM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Fri 16th Oct) | 4.5ft (1.3m) 13s |
| Best Surf | 2AM (Sat 17th Oct) | 8ft (2.5m) 12s |
| Most Powerful | 2AM (Sat 17th Oct) | 8ft (2.5m) 12s |
Table - best surf conditions forecast for Arniston over the next 16 days.
Short Range ForecastHeavy rain (total 30mm), heaviest during Sun morning. Warm (max 21°C on Fri afternoon, min 11°C on Sat night). Mainly strong winds. | Days 5-7 Weather SummaryLight rain (total 2mm), mostly falling on Sun night. Warm (max 20°C on Wed morning, min 12°C on Sun night). Winds increasing (calm on Tue morning, strong winds from the WNW by Wed afternoon). | ||||||||||||||||||
Friday 16 | Saturday 17 | Sunday 18 | Monday 19 | Tuesday 20 | Wednesday 21 | ||||||||||||||
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 14 | SW 13 | SW 12 | WSW 12 | SW 13 | SW 12 | SSW 13 | SSW 12 | SSW 13 | SW 12 | SSW 12 | SSW 12 | SSW 11 | SW 11 | SSW 11 | SSW 12 | SW 12 | SW 12 | SW 12 |
Wave Graph  | |||||||||||||||||||
 kJ | 743 | 382 | 657 | 1689 | 632 | 539 | 492 | 826 | 908 | 1547 | 647 | 421 | 323 | 303 | 441 | 843 | 505 | 593 | 396 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-off | cross-off | cross | cross-on | on | cross-on | cross | cross-off | cross-off | cross-off | cross-off | glassy | cross-off | cross-off | off | off | off |
High Tide | 5:43AM1.41m | 5:49PM1.38m | 6:25AM1.27m | 6:32PM1.23m | 7:44AM1.16m | 8:13PM1.12m | 10:18AM1.18m | 10:46PM1.15m | 11:35AM1.32m | 11:52PM1.29m | 12:16PM1.48m | 00:34AM1.44m | |||||||
Low Tide | 11:28PM0.48m | 11:38AM0.62m | 00:03AM0.62m | 12:19PM0.77m | 00:58AM0.74m | 1:50PM0.89m | 3:04AM0.81m | 4:50PM0.86m | 5:04AM0.73m | 5:58PM0.71m | 5:58AM0.60m | 6:36PM0.53m | |||||||
 |  |  |  |  |  |  | | |  |  | | | |  | | | | | |
 | — | 5:56 | — | — | 5:54 | — | — | 5:52 | — | — | 5:52 | — | — | 5:50 | — | — | 5:50 | — | — |
 | 6:52 | — | 6:52 | — | — | 6:53 | — | — | 6:54 | — | — | 6:55 | — | — | 6:57 | — | — | 6:57 | — |
mm | — | — | — | — | 4 | 6 | 5 | 9 | 6 | 1 | 1 | — | — | — | — | — | — | — | 4 |
Temp °C | 17 | 20 | 21 | 19 | 15 | 13 | 12 | 11 | 12 | 14 | 15 | 16 | 15 | 15 | 16 | 16 | 20 | 19 | 16 |
Feels °C | 15 | 18 | 14 | 12 | 12 | 9 | 10 | 8 | 9 | 10 | 9 | 10 | 12 | 14 | 13 | 10 | 13 | 11 | 13 |
Swell 1 Height (m) Direction Period (s) | SW 14 | SW 13 | E 8 | SW 12 | SW 13 | SW 12 | SSW 13 | SSW 12 | SSW 13 | SSW 12 | SSW 12 | SSW 12 | SSW 11 | SW 11 | SSW 11 | SSW 12 | SW 12 | SW 12 | SW 12 |
| kJ | 743 | 382 | 22 | 355 | 632 | 539 | 492 | 826 | 908 | 800 | 647 | 421 | 323 | 303 | 441 | 843 | 505 | 593 | 396 |
Swell 2 Height (m) Direction Period (s) | E 8 | E 8 | — | E 8 | E 8 | SSW 13 | SW 12 | E 8 | E 8 | E 7 | E 8 | ESE 7 | ESE 7 | ESE 8 | ESE 10 | ESE 9 | ESE 10 | SE 11 | SE 11 |
| kJ | 35 | 22 | — | 12 | 12 | 102 | 205 | 5 | 6 | 15 | 29 | 43 | 18 | 6 | 38 | 46 | 69 | 56 | 29 |
Swell 3 Height (m) Direction Period (s) | E 9 | WSW 11 | — | — | — | E 8 | SW 15 | — | — | — | — | — | — | E 7 | — | — | — | — | E 9 |
| kJ | 36 | 11 | — | — | — | 12 | 107 | — | — | — | — | — | — | 1 | — | — | — | — | 2 |
Wind waves Height (m) Direction Period (s) | — | — | SW 12 | WSW 12 | SSW 5 | — | — | — | — | SW 12 | — | WSW 3 | W 3 | — | SW 2 | — | W 3 | W 5 | WNW 3 |
| kJ | — | — | 657 | 1689 | 33 | — | — | — | — | 1547 | — | 8 | 3 | — | 2 | — | 11 | 61 | 3 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 76 | 19 | 156 | 103 | 183 | 296 | 81 | 81 | 183 | 103 | 167 | 168 | 0 | 0 | 174 | 105 | 113 | 113 | 113 |
Best forecast wave conditions in Overberg | |||||||||||||||||||
Best forecast wave conditions in South Africa | |||||||||||||||||||
Header Global | |||||||||||||||||||
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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.
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