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Surf Forecasts:
Arniston surfForecast / Overberg / South Africa
16 Day Weather and Surf, issued 1 pm Friday 15 May 2026 SASTForecast update in hr min s Forecast update imminent
Arniston surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Arniston sea temperature is
17.5° C
(Which is normal for this time of year)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 (May 15) at 5PM. The primary swell is predicted to be 2.5m and 14s period with a secondary swell of 0.6m and 15s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Arniston in the next 16 days are 2.5m 14s and forecast to arrive on Friday (May 15) at 5PM. Winds are predicted to be cross-offshore at the time the swell arrives.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5PM (Fri 15th May) | 8ft (2.5m) 14s |
| Best Surf | 5PM (Fri 15th May) | 8ft (2.5m) 14s |
| Most Powerful | 5PM (Fri 15th May) | 8ft (2.5m) 14s |
Table - best surf conditions forecast for Arniston over the next 16 days.
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Very mild (max 19°C on Fri afternoon, min 15°C on Sat morning). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 25mm), heaviest during Tue morning. Very mild (max 18°C on Mon afternoon, min 14°C on Tue night). Winds decreasing (strong winds from the SE on Mon night, calm by Wed morning). | ||||||||||||||||||||
Fri 15 | Saturday 16 | Sunday 17 | Monday 18 | Tuesday 19 | Wednesday 20 | Thursday 21 | |||||||||||||||
PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | |
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||
S 14 | S 13 | S 12 | S 12 | SSE 11 | S 11 | S 11 | SW 13 | SW 15 | SSE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | ESE 8 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | |
2349 | 1346 | 759 | 547 | 438 | 235 | 184 | 176 | 255 | 229 | 589 | 717 | 617 | 648 | 573 | 450 | 587 | 588 | 629 | 721 | 682 | |
Wind (km/h) | |||||||||||||||||||||
cross-off | cross | cross-on | on | cross-on | cross | cross | cross-on | on | on | on | cross-on | on | cross-on | glassy | cross-on | on | cross | cross-off | cross-off | cross | |
High Tide | 2:15PM1.81m | 2:25AM2.03m | 2:58PM1.87m | 3:09AM2.04m | 3:41PM1.88m | 3:54AM1.99m | 4:26PM1.84m | 4:40AM1.88m | 5:14PM1.77m | 5:30AM1.73m | 6:07PM1.67m | 6:25AM1.56m | 7:07PM1.57m | 7:30AM1.40m | |||||||
Low Tide | 8:13PM0.17m | 8:47AM-0.03m | 8:58PM0.13m | 9:30AM-0.03m | 9:44PM0.14m | 10:14AM0.02m | 10:31PM0.20m | 11:01AM0.12m | 11:23PM0.30m | 11:50AM0.25m | 00:21AM0.42m | 12:45PM0.38m | 1:30AM0.54m | 1:49PM0.51m | |||||||
 |  |  | | | | | | |  |  |  |  |  | | | | | | |  | |
 | — | — | 7:26 | — | — | 7:26 | — | — | 7:26 | — | — | 7:28 | — | — | 7:28 | — | — | 7:28 | — | — | 7:30 |
 | 5:45 | — | — | 5:44 | — | — | 5:43 | — | — | 5:43 | — | — | 5:42 | — | — | 5:40 | — | — | 5:40 | — | 5:39 |
— | — | — | — | — | — | — | — | — | — | 4 | 10 | 1 | 7 | — | — | 3 | — | — | 1 | 2 | |
Temp °C | 19 | 18 | 16 | 16 | 16 | 17 | 17 | 17 | 18 | 18 | 17 | 15 | 15 | 16 | 16 | 17 | 18 | 17 | 17 | 17 | 17 |
16 | 17 | 12 | 12 | 13 | 16 | 15 | 17 | 16 | 14 | 11 | 8 | 11 | 10 | 17 | 16 | 16 | 15 | 15 | 16 | 17 | |
Swell 1 Height (m) Direction Period (s) | S 14 | S 13 | S 12 | S 12 | SSE 11 | S 11 | S 11 | ESE 7 | SW 15 | S 12 | SW 13 | SW 13 | SW 13 | SSE 13 | SSE 12 | SSE 12 | SSE 12 | SSW 14 | SSW 13 | SSW 19 | SSW 17 |
 kJ | 2349 | 1346 | 759 | 547 | 438 | 235 | 184 | 51 | 255 | 103 | 138 | 113 | 108 | 108 | 103 | 94 | 53 | 77 | 65 | 142 | 202 |
Swell 2 Height (m) Direction Period (s) | SW 15 | SW 14 | SW 13 | SW 12 | SW 13 | ESE 6 | ESE 6 | SW 13 | SSE 13 | SW 14 | SSE 16 | SE 15 | SSE 14 | SW 13 | SW 12 | SW 12 | SSW 15 | SE 11 | SSE 11 | SW 12 | SW 12 |
| kJ | 147 | 581 | 335 | 217 | 166 | 44 | 45 | 176 | 173 | 169 | 26 | 55 | 71 | 56 | 51 | 36 | 42 | 30 | 22 | 37 | 35 |
Swell 3 Height (m) Direction Period (s) | SW 15 | — | — | — | SW 13 | SW 13 | SW 14 | S 10 | E 7 | SSW 13 | SSW 12 | S 11 | — | — | S 17 | SSW 16 | SW 11 | SSW 22 | SSW 21 | — | — |
| kJ | 269 | — | — | — | 142 | 132 | 164 | 68 | 33 | 102 | 14 | 9 | — | — | 6 | 24 | 19 | 45 | 42 | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | E 4 | E 4 | — | — | — | ESE 7 | SSE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | ESE 8 | ESE 9 | ESE 9 | ESE 9 | ESE 9 |
| kJ | — | — | — | 9 | 7 | — | — | — | 57 | 229 | 589 | 717 | 617 | 648 | 573 | 450 | 587 | 588 | 629 | 721 | 682 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 103 | 81 | 76 | 81 | 81 | 0 | 19 | 19 | 81 | 81 | 183 | 208 | 227 | 156 | 107 | 81 | 107 | 107 | 81 | 81 | 81 |
Best forecast wave conditions in Overberg | |||||||||||||||||||||
Best forecast wave conditions in South Africa | |||||||||||||||||||||
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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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