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Surf Forecasts:

Arniston surf break

Arniston surfForecast / Overberg / South Africa

information circle12 Day Weather and Surf, issued 1 pm Tuesday 20 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
21.7° C
 (Which is 1.0°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 Thursday (Jan 22) at 8AM. The primary swell is predicted to be 1.2m and 13s period with a secondary swell of 0.5m and 5s. 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 14s and forecast to arrive on Friday (Jan 23) at 2PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 6s period and expected on Thursday (Jan 22) at 8PM.

Wave TypeTime (SAST) & Date Wave Height & Period
Next good surf (1 star+) 8AM (Thu 22nd Jan)4ft (1.2m) 13s
Best Surf11PM (Thu 22nd Jan)8ft (2.4m) 15s
Most Powerful 2PM (Fri 23rd Jan)8ft (2.5m) 14s

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 Mostly dry. Warm (max 21°C on Thu afternoon, min 17°C on Thu night). Winds decreasing (fresh winds from the E on Tue night, light winds from the ESE by Wed night).

Days 3-6 Weather Summary Mostly dry. Warm (max 22°C on Sun morning, min 16°C on Fri night). Winds decreasing (fresh winds from the SW on Sat afternoon, calm by Mon morning).

Tue
20
Wednesday
21
Thursday
22
Friday
23
Saturday
24
Sunday
25
Monday
26
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
Rating
(10 max)
0
0
0
0
1
1
1
!
!
!
!
4
!
3
1
1
1
1
0
2
1
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
0.7
SSW
1.1
SSW
1.1
SSW
1
SSW
1.2
SSW
1.2
SSW
1.6
SSW
2.4
SSW
2.5
SSW
2.5
S
2.2
SSW
2
SSW
2.2
SSW
1.8
SSW
1.5
SSW
1.5
SSW
1.3
SSW
1.2
SSW
1.1
SSW
1.3
SSW
1.6
SSW
Period(s) (?)141312121213151514131313121212111111111212
Wave
Graph
(?)Metric surfscale
Energy kJ (?)1633733282744615231265236123762288159212401477902623581408334286472680
Wind
(km/h)
35
ESE
35
ENE
30
ESE
30
ESE
15
E
30
SW
35
SW
10
SW
15
S
20
SSW
10
W
10
SW
30
SW
15
WNW
15
SSW
20
S
5
ENE
10
SSE
30
SW
0
WNW
15
S
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
oncross-
on		onononcross-
off		cross-
off		cross-
off		crosscrossoffcross-
off		cross-
off		offcrosscrosscross-
on		cross-
on		cross-
off		glasscross-
on
High Tide
/ height (m)
4:20PM
1.81
4:46AM
1.89
4:52PM
1.79
5:17AM
1.90
5:25PM
1.73
5:50AM
1.87
6:02PM
1.64
6:27AM
1.80
6:44PM
1.52
7:10AM
1.69
7:37PM
1.39
8:07AM
1.56
8:55PM
1.27
9:33AM
1.45
Low Tide
/ height (m)
10:31PM
0.09
10:53AM
0.23
11:00PM
0.10
11:26AM
0.24
11:31PM
0.16
12:02PM
0.27
12:05AM
0.25
12:44PM
0.35
12:44AM
0.37
1:34PM
0.45
1:34AM
0.51
2:43PM
0.55
2:48AM
0.65
Tue
20
Wednesday
21
Thursday
22
Friday
23
Saturday
24
Sunday
25
Monday
26
Sunrise--5:47--5:48--5:48--5:50--5:50--5:52--5:52
Sunset7:52--7:52--7:52--7:51--7:51--7:50--7:50--
clear
clear
clear
clear
clear
clear
part cloud
part cloud
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
part cloud
clear
Rain (mm)
---------------------
Temp. °C201920202020211919191821212022212021202020
Feels °C (?)151315161820151416151620181821182021171919
  • 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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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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