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Arniston surfForecast / Overberg / South Africa
12 Day Weather and Surf, issued 1 pm Friday 02 Jan 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
21.0° C
(Which is slightly warmer than usual)Best Forecast Surf Conditions for Arniston this week:
The surf forecast for Arniston over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Jan 05) at 8AM. The primary swell is predicted to be 0.9m and 11s period with a secondary swell of 0.6m and 12s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Arniston in the next 12 days are 3.0m 14s and forecast to arrive on Wednesday (Jan 07) at 11AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 5s period and expected on Monday (Jan 05) at 11PM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Mon 5th Jan) | 3ft (0.9m) 11s |
| Best Surf | 2AM (Wed 7th Jan) | 11ft (3.5m) 11s |
| Most Powerful | 11AM (Wed 7th Jan) | 10ft (3.0m) 14s |
Table - best surf conditions forecast for Arniston over the next 12 days.
Updates in hr min s Forecast update imminent
Short Range Forecast Light rain (total 2mm), mostly falling on Fri night. Warm (max 24°C on Fri afternoon, min 19°C on Sun night). Winds decreasing (fresh winds from the SW on Fri afternoon, calm by Mon morning). | Days 3-6 Weather Summary Mostly dry. Warm (max 25°C on Tue afternoon, min 19°C on Tue night). Winds increasing (light winds from the SW on Mon night, strong winds from the WSW by Tue afternoon). | ||||||||||||||||||||||
Fri 02 | Saturday 03 | Sunday 04 | Monday 05 | Tuesday 06 | Wednesday 07 | Thursday 08 | |||||||||||||||||
| PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | |||
Rating (10 max) | |||||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||||
| Wave Height (m) & direction (?) | |||||||||||||||||||||||
| Period(s) (?) | 9 | 16 | 15 | 14 | 6 | 10 | 10 | 11 | 11 | 11 | 12 | 10 | 10 | 11 | 14 | 14 | 13 | 12 | 13 | 12 | 10 | ||
Wave (?)Graph  | |||||||||||||||||||||||
 kJ (?) | 117 | 268 | 360 | 293 | 150 | 125 | 125 | 156 | 161 | 127 | 114 | 240 | 530 | 3229 | 3353 | 3048 | 1844 | 714 | 305 | 252 | 194 | ||
Wind (km/h) | |||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- on | cross- on | cross- on | cross- on | on | on | cross- on | on | cross | off | cross- off | cross- off | cross- off | cross- on | cross- on | cross- on | on | on | cross- on | on | ||
High Tide / height (m) | 2:32PM 1.88 | 3:06AM 1.84 | 3:18PM 1.92 | 3:49AM 1.91 | 4:02PM 1.90 | 4:31AM 1.93 | 4:43PM 1.84 | 5:12AM 1.90 | 5:23PM 1.73 | 5:51AM 1.84 | 6:02PM 1.60 | 6:30AM 1.73 | 6:41PM 1.46 | 7:10AM 1.61 | |||||||||
Low Tide / height (m) | 8:56PM 0.06 | 9:14AM 0.18 | 9:39PM 0.02 | 10:00AM 0.15 | 10:20PM 0.03 | 10:44AM 0.17 | 10:58PM 0.08 | 11:26AM 0.23 | 11:34PM 0.17 | 12:07PM 0.32 | 12:09AM 0.29 | 12:48PM 0.44 | 12:44AM 0.42 | 1:32PM 0.55 | |||||||||
Fri 02 | Saturday 03 | Sunday 04 | Monday 05 | Tuesday 06 | Wednesday 07 | Thursday 08 | |||||||||||||||||
| Sunrise | - | - | 5:30 | - | - | 5:31 | - | - | 5:31 | - | - | 5:33 | - | - | 5:33 | - | - | 5:33 | - | - | 5:35 | ||
| Sunset | 7:54 | - | - | 7:54 | - | - | 7:54 | - | - | 7:54 | - | - | 7:55 | - | - | 7:55 | - | - | 7:54 | - | - | ||
 |  |  |  |  | | |  | | | | | | | | | | | | | | |||
Rain (mm) | - | 1 | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | ||
| Temp. °C | 24 | 21 | 21 | 21 | 21 | 21 | 21 | 20 | 21 | 22 | 21 | 24 | 25 | 22 | 20 | 20 | 19 | 20 | 20 | 20 | 21 | ||
| Feels °C (?) | 20 | 20 | 19 | 18 | 19 | 19 | 18 | 19 | 21 | 20 | 21 | 21 | 18 | 18 | 18 | 17 | 16 | 17 | 16 | 16 | 18 | ||
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Surf Rating (10 Max)
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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.
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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 12 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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