Snow-ForecastSnow-ForecastMountain-ForecastMountain-ForecastTide-ForecastTide-ForecastWeather-ForecastWeather-Forecast
Search by country, region, or break
Search by country, region, or break

Quick Links

Surf Forecasts:

Arniston surf break

Arniston surfForecast / Overberg / South Africa

information circle16 Day Weather and Surf, issued 7 pm Wednesday 18 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
21.1° 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 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Mar 19) at 8PM. The primary swell is predicted to be 1.6m and 14s period with a secondary swell of 1.4m and 7s. Another secondary swell of 0.6m and 6s is also forecast. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Arniston in the next 16 days are 2.0m 14s and forecast to arrive on Monday (Mar 23) at 8PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 4s period and expected on Friday (Mar 20) at 5AM.

Wave TypeTime (SAST) & Date Wave Height & Period
Next good surf (1 star+) 8PM (Thu 19th Mar)5ft (1.6m) 14s
Best Surf11AM (Fri 20th Mar)7ft (2.2m) 12s
Most Powerful 8PM (Mon 23rd Mar)6.5ft (2.0m) 14s

Table - best surf conditions forecast for Arniston over the next 16 days.

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

Short Range Forecast Light rain (total 6mm), mostly falling on Thu night. Warm (max 22°C on Thu afternoon, min 18°C on Fri night). Winds decreasing (fresh winds from the E on Wed night, light winds from the SSE by Sat morning).

Days 3-6 Weather Summary Mostly dry. Warm (max 22°C on Tue afternoon, min 19°C on Sat night). Mainly fresh winds.

Thursday
19
Friday
20
Saturday
21
Sunday
22
Monday
23
Tuesday
24
Wed
25
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
0
2
2
1
!
!
3
1
0
0
0
0
0
0
0
0
!
!
1
1
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
1.4
SSW
1.7
SSW
1.6
SSW
1.3
SSW
2.2
SSW
2.3
SSW
1.9
S
1.3
SSW
1.2
SSW
1.1
SSW
1
SSW
1
SSW
1.1
SSW
1.6
SSW
1.9
SSW
1.8
SSW
2.5
SE
2.5
SE
1.7
ESE
1.6
SE
1.3
SSE
Period(s) (?)1614141312111012121211111112141388888
Wave
Graph
(?)Metric surfscale
Energy kJ (?)966120610755381361120873048542632223923428072714391106828784373321217
Wind
(km/h)
35
E
10
ENE
30
SW
30
WSW
30
SW
25
SW
10
SSW
10
SE
20
SE
20
E
25
ESE
30
SE
30
ESE
30
ESE
30
ESE
25
ESE
15
ESE
20
SE
15
ESE
10
E
20
SE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on		cross-
on		cross-
off		cross-
off		cross-
off		cross-
off		crossononononononononononononcross-
on		on
High Tide
/ height (m)
3:21AM
2.10
3:39PM
1.95
3:53AM
2.14
4:12PM
1.94
4:26AM
2.11
4:47PM
1.88
5:01AM
2.00
5:25PM
1.76
5:40AM
1.84
6:06PM
1.59
6:24AM
1.63
6:59PM
1.41
7:25AM
1.41
Low Tide
/ height (m)
9:10PM
0.02
9:35AM
-0.04
9:41PM
-0.01
10:08AM
-0.07
10:13PM
0.01
10:42AM
-0.02
10:47PM
0.09
11:18AM
0.08
11:24PM
0.22
11:57AM
0.25
12:06AM
0.40
12:45PM
0.44
1:01AM
0.60
1:58PM
0.63
Thursday
19
Friday
20
Saturday
21
Sunday
22
Monday
23
Tuesday
24
Wed
25
Sunrise-6:39--6:41--6:41--6:43--6:43--6:43--6:45-
Sunset--6:52--6:51--6:49--6:47--6:46--6:45--6:44
cloud
part cloud
part cloud
rain showers
clear
rain showers
rain showers
clear
clear
clear
part cloud
clear
part cloud
part cloud
part cloud
cloud
part cloud
part cloud
part cloud
cloud
part cloud
Rain (mm)
---1-23--------------
Temp. °C202122212020191919191920202121212122212223
Feels °C (?)162221181616161716161616161819192123222324
  • 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

Surf-Forecast Premium Launches 16-day Forecast and New, Improved Modelling
Ben Mondy

Surf-Forecast Premium Launches 16-day Forecast and New, Improved Modelling

Get 16% off your subscription with code 16DAYS—available for 16 days only, until March 25, 2026. Surf-Forecast Premium just got better. All paid subscribers will now see a full 16-day forecast, surf reports and wind and tide data for over 7,000 of the world's best surf spots. Premium members will also have access to a new high-resolution forecast model, which enhances our current forecasts by making them quicker and more accurate. That’s more lead time. More confidence. More chances to score g

Save Up to 20% on SIXT Rental Cars Worldwide – Exclusive Surf-Forecast Deal
travel
Surf Forecast

Save Up to 20% on SIXT Rental Cars Worldwide – Exclusive Surf-Forecast Deal

Surf road trips just got even better. Surf-Forecast users can now save up to 20% on SIXT rental cars worldwide during the promotional period until March 31, 2026. Whether you’re planning a legendary California road trip, chasing waves along Europe’s coasts, or exploring remote surf destinations, this exclusive SIXT offer helps you travel smarter and cheaper. And if you want some inspiration on where to go, check out our article Five Iconic Surf Road Trips. Click and get your SIXT discount

Read more

Read more

Discover more articles and updates in the Greenroom.

submit an eyeball surf report

Quick surf report for Arniston:

join our community of surf reporters

FREE! Surf-Forecast.com widget for your website

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 16 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.

Nearest locationNearest
Nearest locationNearest
Nearest locationNearest