Surf Forecasts:
Arniston surf forecast from 12 Jul 2026:
- Best quality surf: Wednesday 15 Jul, 8PM (local time) - 6ft (1.8m), 15s period, SW swell with cross-offshore winds.
- Most powerful swell: Wednesday 15 Jul, 8PM (local time) - 6ft (1.8m), 15s period, SW swell with 1,396 kJ wave energy.
- Next surfable swell (1★+): Monday 13 Jul, 11AM (local time) - 4.5ft (1.4m), 8s period with ESE 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 Monday (Jul 13) at 11AM. The primary swell is predicted to be 1.4m and 8s period with a secondary swell of 0.6m and 10s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Arniston in the next 16 days are 1.8m 15s and forecast to arrive on Wednesday (Jul 15) at 8PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 4s period and expected on Thursday (Jul 16) at 2PM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11AM (Mon 13th Jul) | 4.5ft (1.4m) 8s |
| Best Surf | 8PM (Wed 15th Jul) | 6ft (1.8m) 15s |
| Most Powerful | 8PM (Wed 15th Jul) | 6ft (1.8m) 15s |
Table - best surf conditions forecast for Arniston over the next 16 days.
Short Range ForecastMostly dry. Very mild (max 17°C on Tue afternoon, min 14°C on Mon morning). Winds decreasing (fresh winds from the E on Sun afternoon, calm by Mon morning). | Days 4-6 Weather SummaryMostly dry. Very mild (max 19°C on Thu afternoon, min 13°C on Fri night). Winds increasing (light winds from the SW on Wed night, strong winds from the ENE by Fri night). | ||||||||||||||||||||
Sunday 12 | Monday 13 | Tuesday 14 | Wednesday 15 | Thursday 16 | Friday 17 | Saturday 18 | |||||||||||||||
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) | S 11 | ESE 7 | ESE 7 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 9 | ESE 9 | WSW 11 | SW 15 | SW 14 | SW 14 | SW 13 | SSW 12 | SSW 11 | S 11 | SSW 10 | E 7 | SSW 14 | ESE 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 286 | 241 | 204 | 214 | 196 | 186 | 221 | 237 | 206 | 508 | 693 | 1303 | 754 | 623 | 893 | 593 | 682 | 432 | 226 | 379 | 286 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | cross-on | glassy | on | cross-off | off | cross-off | off | off | cross-off | cross-off | off | off | cross-off | cross-on | on | cross-on | cross-on | cross-on | off |
High Tide | 1:53PM1.65m | 2:06AM1.83m | 2:43PM1.80m | 2:56AM1.90m | 3:28PM1.90m | 3:42AM1.92m | 4:12PM1.97m | 4:26AM1.89m | 4:53PM1.98m | 5:07AM1.81m | 5:34PM1.93m | 5:48AM1.69m | 6:13PM1.84m | ||||||||
Low Tide | 7:58PM0.33m | 8:32AM0.11m | 8:51PM0.22m | 9:18AM0.04m | 9:40PM0.14m | 10:00AM0.00m | 10:26PM0.12m | 10:40AM0.02m | 11:09PM0.14m | 11:18AM0.09m | 11:52PM0.22m | 11:55AM0.20m | 00:33AM0.33m | ||||||||
 | |  | | |  | |  | | | | | | | |  | |  | | | | |
 | 7:45 | — | — | 7:43 | — | — | 7:43 | — | — | 7:43 | — | — | 7:43 | — | — | 7:43 | — | — | 7:41 | — | — |
 | — | 5:44 | — | — | 5:44 | — | — | 5:45 | — | — | 5:45 | — | — | 5:45 | — | — | 5:46 | — | — | 5:47 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 15 | 16 | 15 | 15 | 16 | 16 | 15 | 17 | 15 | 15 | 17 | 15 | 16 | 19 | 16 | 15 | 14 | 15 | 13 | 16 | 17 |
Feels °C | 10 | 11 | 11 | 15 | 15 | 15 | 12 | 13 | 11 | 12 | 14 | 15 | 14 | 15 | 13 | 12 | 8 | 8 | 6 | 12 | 14 |
Swell 1 Height (m) Direction Period (s) | SE 7 | S 10 | ESE 7 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 9 | ESE 9 | ESE 9 | SW 15 | SW 14 | SW 14 | SW 13 | SSW 12 | SSW 11 | S 11 | SSW 10 | SSW 11 | SSW 14 | ESE 8 |
| kJ | 153 | 225 | 204 | 214 | 196 | 186 | 221 | 237 | 206 | 135 | 693 | 1303 | 754 | 623 | 893 | 593 | 682 | 432 | 226 | 379 | 286 |
Swell 2 Height (m) Direction Period (s) | S 11 | SW 16 | SSW 10 | SSW 10 | SSW 9 | S 10 | S 9 | S 9 | SSE 8 | SSW 17 | E 9 | E 9 | E 9 | E 9 | E 10 | E 10 | E 10 | SSW 16 | SSW 14 | SSE 8 | SW 13 |
| kJ | 286 | 10 | 147 | 77 | 69 | 47 | 59 | 39 | 23 | 195 | 133 | 81 | 58 | 62 | 46 | 48 | 48 | 52 | 180 | 53 | 170 |
Swell 3 Height (m) Direction Period (s) | SW 16 | W 11 | SSE 10 | S 10 | S 10 | SSW 9 | SSW 9 | SW 14 | SSW 12 | WSW 8 | SW 11 | SE 9 | S 9 | S 11 | — | — | S 19 | — | S 8 | SSE 11 | S 9 |
| kJ | 10 | 2 | 31 | 70 | 50 | 48 | 16 | 53 | 15 | 44 | 166 | 3 | 1 | 2 | — | — | 7 | — | 48 | 25 | 55 |
Wind waves Height (m) Direction Period (s) | E 6 | ESE 7 | — | — | — | — | W 2 | WSW 3 | W 3 | WSW 11 | — | — | — | — | — | — | — | E 5 | E 7 | E 7 | — |
| kJ | 102 | 241 | — | — | — | — | 1 | 6 | 1 | 508 | — | — | — | — | — | — | — | 115 | 226 | 225 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 81 | 81 | 76 | 0 | 76 | 0 | 0 | 19 | 0 | 0 | 0 | 0 | 0 | 0 | 103 | 183 | 81 | 139 | 93 | 76 | 0 |
Best forecast wave conditions in Overberg | |||||||||||||||||||||
Best forecast wave conditions in South Africa | |||||||||||||||||||||
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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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