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Surf Forecasts:

Arniston surf break

Arniston surfForecast / Overberg / South Africa

information circle48hr Weather and Surf, issued 1 pm Thursday 18 Dec 2025 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 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 5PM is: 1.2m 10s primary swell from a South-southeast direction and 0.8m 8s secondary swell from a Southwest direction (forecast issued at 01:00pm December 18). The wind direction is predicted to be cross-onshore.

Time (SAST) & DateWave HeightWave Period
Morning (18 Dec)5ft (1.5m)9s
Afternoon (18 Dec)4.5ft (1.3m)10s
Evening (18 Dec)4.5ft (1.3m)11s

Table - waves today at Arniston. (Swell directed towards the surf break)

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table
Thursday
18
Friday
19
Saturday
20
Sunday
21
11 AM2 PM5 PM8 PM11 PM2 AM5 AM8 AM11 AM2 PM5 PM8 PM11 PM2 AM5 AM8 AM11 AM2 PM5 PM8 PM11 PM2 AM5 AM8 AM
Rating
(10 max)
1
0
0
0
2
2
2
1
0
0
0
1
1
1
2
2
0
0
0
0
0
0
0
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
1.4
SSE
1.4
SSE
1.2
SSE
1.3
SSE
1.3
SSE
1
S
1
S
0.9
SSE
0.9
SSE
0.8
SSW
1.2
SSW
1.4
SSW
1.6
SSW
1.7
SSW
1.8
SSW
1.9
SSW
2
SSW
1.9
SSW
1.9
SSW
1.7
SSW
1.5
SSW
1.4
SSW
1.3
SSW
2.5
E
Period(s) (?)910101111111111910131312121314151414141313127
Wave
Graph
(?)Metric surfscale
Energy kJ (?)321348288353394247229198120122484604754861102813251659148415121059732614485609
Wind
(km/h)
10
S
20
S
20
SSE
15
SSE
5
ESE
5
ESE
5
ESE
5
E
15
SSE
20
SSE
20
SSE
15
SE
15
ESE
15
ESE
15
ENE
15
ENE
20
ESE
25
ESE
30
ESE
25
E
30
E
35
E
40
E
45
E
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
crosscross-
on		cross-
on		cross-
on		onglassglasscross-
on		cross-
on		cross-
on		cross-
on		cross-
on		ononcross-
on		cross-
on		onononononcross-
on		cross-
on		cross-
on
High Tide
/ height (m)
2:20PM
1.66
2:50AM
1.62
2:54PM
1.70
3:23AM
1.66
3:27PM
1.72
3:56AM
1.69
Low Tide
/ height (m)
8:18AM
0.47
8:41PM
0.29
8:51AM
0.42
9:13PM
0.25
9:24AM
0.39
9:43PM
0.22
Thursday
18
Friday
19
Saturday
20
Sunday
21
Sunrise-------5:20-------5:20-------5:22
Sunset--7:49-------7:50-------7:50-----
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
Rain (mm)
------------------------
Temp. °C191818171717171718191919191818192020202020202020
Feels °C (?)171515151717171716171718191717181817171817161514
  • 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

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