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Surf Forecasts:

Arniston surf break

Arniston surfForecast / Overberg / South Africa

information circle12 Day Weather and Surf, issued 7 am Wednesday 11 Mar 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
20.9° 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 Thursday (Mar 12) at 8PM. The primary swell is predicted to be 1.5m and 9s period with a secondary swell of 0.8m 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 1.9m 11s and forecast to arrive on Tuesday (Mar 17) at 11AM. Winds are predicted to be cross-onshore at the time the swell arrives.

Wave TypeTime (SAST) & Date Wave Height & Period
Next good surf (1 star+) 8PM (Thu 12th Mar)5ft (1.5m) 9s
Best Surf 8PM (Thu 12th Mar)5ft (1.5m) 9s
Most Powerful11AM (Tue 17th Mar)6ft (1.9m) 11s

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

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

Short Range Forecast Mostly dry. Warm (max 30°C on Thu afternoon, min 19°C on Wed morning). Wind will be generally light.

Days 3-6 Weather Summary Light rain (total 3mm), mostly falling on Mon morning. Warm (max 24°C on Sun afternoon, min 18°C on Mon night). Wind will be generally light.

Wednesday
11
Thursday
12
Friday
13
Saturday
14
Sunday
15
Monday
16
Tuesday
17
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
0
0
1
0
1
3
0
0
2
0
0
0
0
0
1
0
0
0
0
0
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
1.7
ESE
1.6
ESE
1.6
ESE
1.6
E
1.6
E
1.4
E
1.2
E
0.7
SW
1
SW
0.8
SW
1.2
ESE
0.6
SW
1.1
ESE
0.9
S
0.9
SSW
1
SSW
1.6
S
1
SSW
1.9
S
1.2
SSW
1.2
SSW
Period(s) (?)8889999171614812671312712111112
Wave
Graph
(?)Metric surfscale
Energy kJ (?)402359366430440332235297474289184908770294303246298904359412
Wind
(km/h)
25
E
25
E
15
E
15
ESE
15
SSE
5
E
15
ESE
15
SSE
10
S
20
SSE
25
SE
20
SE
15
E
20
SE
10
SE
25
S
25
SSE
20
SE
35
SE
35
SE
25
SE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on		oncross-
on		oncross-
on		glassoncross-
on		cross-
on		cross-
on		cross-
on		cross-
on		oncross-
on		oncross-
on		cross-
on		oncross-
on		cross-
on		on
High Tide
/ height (m)
8:04PM
1.07
9:20AM
1.10
12:05AM
1.12
12:07PM
1.20
12:56AM
1.29
12:57PM
1.36
1:27AM
1.48
1:32PM
1.53
1:54AM
1.67
2:03PM
1.68
2:22AM
1.85
2:34PM
1.81
2:51AM
1.99
Low Tide
/ height (m)
1:35PM
0.80
1:46AM
0.91
5:16PM
0.85
6:18AM
0.88
6:43PM
0.69
7:06AM
0.71
7:17PM
0.52
7:37AM
0.53
7:45PM
0.36
8:05AM
0.35
8:12PM
0.21
8:34AM
0.18
8:40PM
0.10
Wednesday
11
Thursday
12
Friday
13
Saturday
14
Sunday
15
Monday
16
Tuesday
17
Sunrise6:33--6:35--6:35--6:35--6:37--6:37--6:39--
Sunset-7:02--7:01--7:00--6:59--6:58--6:55--6:54-
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
cloud
part cloud
clear
clear
part cloud
thunderstorm
light rain
cloud
light rain
light rain
light rain
Rain (mm)
---------------21-544
Temp. °C222323273023232422212221232422212020181718
Feels °C (?)202121242725232423232220242423201716151114
  • 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:
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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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