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Surf Forecasts:

Arniston surf break

Arniston surfForecast / Overberg / South Africa

information circle12 Day Weather and Surf, issued 7 pm Wednesday 14 Jan 2026 SAST
Forecast 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
21.8° C
 (Which is 1.3°C warmer than normal for this time of year)

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 Saturday (Jan 17) at 5AM. The primary swell is predicted to be 0.6m and 9s period with a secondary swell of 0.8m and 6s. Another secondary swell of 0.7m and 7s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Arniston in the next 12 days are 2.5m 11s and forecast to arrive on Sunday (Jan 18) at 5AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Saturday (Jan 17) at 11AM.

Wave TypeTime (SAST) & Date Wave Height & Period
Next good surf (1 star+) 5AM (Sat 17th Jan)2ft (0.6m) 9s
Best Surf 2AM (Sun 18th Jan)8ft (2.4m) 10s
Most Powerful 5AM (Sun 18th Jan)8ft (2.5m) 11s

Table - best surf conditions forecast for Arniston over the next 12 days.

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table

Short Range Forecast Light rain (total 6mm), mostly falling on Wed night. Warm (max 22°C on Wed night, min 17°C on Thu morning). Winds decreasing (strong winds from the W on Wed night, light winds from the ESE by Fri morning).

Days 3-6 Weather Summary Light rain (total 2mm), mostly falling on Sat night. Warm (max 20°C on Sat night, min 18°C on Sat night). Winds decreasing (fresh winds from the WSW on Sat night, calm by Mon night).

Thursday
15
Friday
16
Saturday
17
Sunday
18
Monday
19
Tuesday
20
Wed
21
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
!
2
1
1
0
0
2
0
0
0
0
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
1.3
SSW
2.3
S
1.3
SSW
1
SSW
1
SSW
1.5
S
0.7
SSW
0.9
SSW
1.5
SW
2.4
SW
2
SSW
1.9
SSW
1.6
SSW
1.4
SSW
1.4
SSW
0.8
SW
1
SSW
1.5
S
0.9
SSW
1.7
E
1.9
ESE
Period(s) (?)1212121110109910101212121111111081266
Wave
Graph
(?)Metric surfscale
Energy kJ (?)55114804142421904157313341611721163997713431423140208309239187281
Wind
(km/h)
40
S
25
SE
25
ESE
25
E
15
SSE
35
S
15
SSW
20
SW
40
WSW
30
WSW
25
SW
30
SSW
10
SE
20
ESE
20
SSE
0
ESE
20
ESE
35
ESE
30
E
40
E
40
E
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on		cross-
on		ononcross-
on		cross-
on		crosscross-
off		cross-
off		cross-
off		cross-
off		crosscross-
on		oncross-
on		glassonononcross-
on		on
High Tide
/ height (m)
1:34AM
1.35
1:35PM
1.48
2:11AM
1.48
2:13PM
1.59
2:44AM
1.59
2:47PM
1.68
3:15AM
1.70
3:18PM
1.75
3:46AM
1.78
3:49PM
1.79
4:16AM
1.85
4:20PM
1.81
4:46AM
1.89
4:52PM
1.79
Low Tide
/ height (m)
7:36AM
0.65
8:04PM
0.44
8:14AM
0.54
8:36PM
0.33
8:48AM
0.44
9:06PM
0.24
9:19AM
0.35
9:35PM
0.16
9:50AM
0.29
10:03PM
0.11
10:21AM
0.24
10:31PM
0.09
10:53AM
0.23
Thursday
15
Friday
16
Saturday
17
Sunday
18
Monday
19
Tuesday
20
Wed
21
Sunrise-5:41--5:41--5:43--5:43--5:45--5:46--5:47-
Sunset--7:53--7:53--7:53--7:53--7:52--7:52--7:52
rain showers
cloud
cloud
rain showers
part cloud
part cloud
part cloud
clear
clear
rain showers
part cloud
clear
part cloud
clear
clear
part cloud
part cloud
clear
clear
clear
clear
Rain (mm)
3--3-----2-----------
Temp. °C221717182020182021201919181919191920202020
Feels °C (?)151212141918141714131313141615171616151313
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder

Latest Updates

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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.

View detailed surf forecast for Arniston at:
surf-forecast.com

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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