Surf Forecasts:
Arniston surf forecast from 23 Sep 2026:
- Most powerful swell: Wednesday 30 Sep, 2AM (local time) - 13ft (4.0m), 9s period, E swell with 2,371 kJ wave energy.
Best Forecast Surf Conditions for Arniston this week:
The most powerful waves expected at Arniston in the next 16 days are 4.0m 9s and forecast to arrive on Wednesday (Sep 30) at 2AM. Winds are predicted to be cross-onshore at the time the swell arrives.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 2AM (Wed 30th Sep) | 13ft (4.0m) 9s |
Table - best surf conditions forecast for Arniston over the next 16 days.
Short Range ForecastLight rain (total 2mm), mostly falling on Fri afternoon. Warm (max 22°C on Fri afternoon, min 16°C on Wed night). Winds decreasing (fresh winds from the E on Wed night, light winds from the SE by Fri morning). | Days 5-7 Weather SummaryLight rain (total 2mm), mostly falling on Sat afternoon. Very mild (max 17°C on Sat afternoon, min 14°C on Sun night). Winds increasing (light winds from the SSE on Sat night, near gales from the E by Tue morning). | |||||||||||||||||||
Wed 23 | Thursday 24 | Friday 25 | Saturday 26 | Sunday 27 | Monday 28 | Tuesday 29 | ||||||||||||||
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) | ESE 8 | E 8 | S 16 | SSW 14 | SSW 13 | SSW 12 | SSW 12 | SSW 12 | SSW 15 | SSW 14 | SW 14 | SW 14 | S 8 | SE 6 | SSE 7 | ESE 6 | ESE 7 | E 8 | E 8 | E 9 |
Wave Graph  | ||||||||||||||||||||
 kJ | 176 | 234 | 589 | 803 | 514 | 322 | 265 | 254 | 683 | 701 | 514 | 245 | 291 | 167 | 178 | 312 | 813 | 1296 | 1422 | 2371 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | on | cross-on | cross-on | cross-on | cross-on | cross | cross-on | cross-on | on | on | on | cross-on | on | cross-on | cross-on | cross-on | cross-on |
High Tide | 1:45AM1.64m | 2:02PM1.81m | 2:15AM1.76m | 2:30PM1.94m | 2:45AM1.85m | 2:58PM2.03m | 3:16AM1.90m | 3:28PM2.08m | 3:48AM1.91m | 4:00PM2.06m | 4:22AM1.86m | 4:34PM1.98m | 4:58AM1.76m | |||||||
Low Tide | 7:48PM0.37m | 7:52AM0.26m | 8:15PM0.22m | 8:19AM0.16m | 8:43PM0.10m | 8:47AM0.08m | 9:12PM0.01m | 9:17AM0.05m | 9:42PM-0.02m | 9:48AM0.06m | 10:15PM0.00m | 10:21AM0.12m | 10:50PM0.09m | |||||||
 |  |  | | | |  | | | |  | | | |  | | | | |  | |
 | — | — | 6:26 | — | — | 6:24 | — | — | 6:22 | — | — | 6:22 | — | — | 6:20 | — | — | 6:18 | — | — |
 | 6:35 | — | — | 6:36 | — | — | 6:37 | — | — | 6:37 | — | — | 6:37 | — | — | 6:38 | — | — | 6:39 | — |
mm | — | — | — | — | — | — | 1 | — | 1 | 2 | — | — | — | — | — | — | — | — | — | — |
Temp °C | 18 | 17 | 16 | 16 | 17 | 18 | 22 | 19 | 18 | 17 | 16 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 16 | 16 |
Feels °C | 17 | 15 | 12 | 13 | 17 | 18 | 23 | 20 | 18 | 16 | 13 | 10 | 11 | 9 | 8 | 7 | 7 | 5 | 6 | 8 |
Swell 1 Height (m) Direction Period (s) | ESE 8 | S 6 | S 16 | SSW 14 | ESE 7 | ESE 8 | ESE 7 | SSW 12 | SSW 15 | SSW 14 | SW 14 | SW 14 | S 8 | SSW 8 | SSE 7 | SW 12 | SW 12 | SSW 14 | SW 14 | SW 13 |
| kJ | 176 | 104 | 589 | 803 | 249 | 210 | 147 | 254 | 683 | 701 | 514 | 245 | 291 | 105 | 178 | 98 | 49 | 131 | 89 | 42 |
Swell 2 Height (m) Direction Period (s) | SW 11 | SW 10 | SW 10 | — | SSW 13 | SSW 12 | SSW 12 | ESE 7 | ESE 8 | E 8 | ESE 7 | ESE 7 | SW 14 | SW 13 | SW 13 | SW 16 | SSW 15 | WSW 11 | — | SSW 17 |
| kJ | 55 | 27 | 15 | — | 514 | 322 | 265 | 70 | 49 | 32 | 18 | 11 | 198 | 111 | 101 | 10 | 42 | 81 | — | 57 |
Swell 3 Height (m) Direction Period (s) | S 10 | S 18 | — | — | E 8 | — | S 16 | SSW 15 | S 9 | S 11 | — | — | ESE 7 | S 12 | S 11 | S 11 | — | — | — | — |
| kJ | 18 | 24 | — | — | 57 | — | 21 | 184 | 24 | 3 | — | — | 10 | 3 | 3 | 2 | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SE 4 | E 8 | ESE 7 | ESE 7 | — | — | — | — | SSE 3 | S 5 | SSE 6 | S 6 | — | SE 6 | E 6 | ESE 6 | ESE 7 | E 8 | E 8 | E 9 |
| kJ | 20 | 234 | 335 | 299 | — | — | — | — | 1 | 56 | 104 | 209 | — | 167 | 105 | 312 | 813 | 1296 | 1422 | 2371 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 105 | 81 | 81 | 81 | 65 | 65 | 19 | 81 | 105 | 183 | 81 | 183 | 246 | 144 | 144 | 144 | 144 | 140 | 140 | 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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