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Surf Forecasts:
Arniston surfForecast / Overberg / South Africa
48hr Weather and Surf, issued 1 am Friday 12 Dec 2025 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
20.7° C
(Which is 1.3°C warmer than normal for this time of year)How big are the waves at Arniston today?
The current surf forecast for Arniston at 8AM is: 0.6m 18s primary swell from a South-southwest direction and 0.8m 8s secondary swell from a East direction (forecast issued at 01:00am December 12). An open ocean swell of 0.7m 4s is not directed at the surf break. The wind direction is predicted to be offshore.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (12 Dec) | 2ft (0.6m) | 18s |
| Afternoon (12 Dec) | 6.5ft (2.0m) | 17s |
| Evening (12 Dec) | 6ft (1.9m) | 11s |
Table - waves today at Arniston. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Friday 12 | Saturday 13 | Sunday 14 | ||||||||||||||||||||||
| 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |  |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 9 | 8 | 19 | 18 | 17 | 17 | 11 | 11 | 16 | 14 | 14 | 14 | 14 | 13 | 12 | 13 | 13 | 11 | 13 | 12 | 12 | 12 | 12 | 12 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 109 | 94 | 145 | 214 | 309 | 2178 | 551 | 829 | 2233 | 2416 | 4308 | 7041 | 1941 | 1497 | 1045 | 995 | 703 | 674 | 908 | 703 | 692 | 605 | 569 | 655 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | off | off | off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | off | cross- off | cross- off | cross | cross | cross | cross- off |
High Tide / height (m) | 8:37PM 1.24 | 9:19AM 1.44 | 10:02PM 1.19 | 10:31AM 1.42 | 11:21PM 1.23 | 11:32AM 1.44 | ||||||||||||||||||
Low Tide / height (m) | 2:40AM 0.64 | 4:06PM 0.66 | 3:57AM 0.70 | 5:20PM 0.63 | 5:13AM 0.71 | 6:16PM 0.56 | ||||||||||||||||||
Friday 12 | Saturday 13 | Sunday 14 | ||||||||||||||||||||||
| Sunrise | - | - | - | 5:18 | - | - | - | - | - | - | - | 5:18 | - | - | - | - | - | - | - | 5:18 | - | - | - | - |
| Sunset | - | - | - | - | - | - | 7:45 | - | - | - | - | - | - | - | 7:45 | - | - | - | - | - | - | - | 7:46 | - |
 | |  |  | |  |  | |  |  |  |  | | | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | 1 | - | 1 | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 20 | 19 | 20 | 22 | 26 | 18 | 18 | 18 | 17 | 17 | 17 | 17 | 18 | 18 | 18 | 17 | 17 | 16 | 16 | 16 | 18 | 19 | 19 | 19 |
| Feels °C (?) | 19 | 16 | 15 | 17 | 19 | 9 | 11 | 10 | 10 | 9 | 10 | 10 | 11 | 11 | 11 | 11 | 14 | 13 | 14 | 14 | 15 | 15 | 16 | 18 |
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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