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:

Dunes surfForecast / Cape Town / South Africa

information circle48hr Weather and Surf, issued 7 pm Wednesday 18 Mar 2026 SAST
Forecast update in hr  min  s Forecast update imminent
Dunes surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Dunes sea temperature is
17.8° C
 (Which is 1.6°C colder than average for this time of year)

How big are the waves at Dunes today?

The current surf forecast for Dunes at 11PM is: 1.5m 13s primary swell from a South-southwest direction and 0.7m 16s secondary swell from a South-southwest direction, 2.1m 7s secondary swell from a Southeast direction (forecast issued at 07:00pm March 18). The wind direction is predicted to be offshore and the swell rating is 4.

Time (SAST) & DateWave HeightWave Period
Morning (18 Mar)--
Afternoon (18 Mar)4.5ft (1.4m)13s
Evening (18 Mar)5ft (1.5m)13s

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

Updates in  hr  min  s Forecast update imminent 
16 DaysHourly
Print Table
Wednesday
18
Thursday
19
Friday
20
Saturday
21
5 PM8 PM11 PM2 AM5 AM8 AM11 AM2 PM5 PM8 PM11 PM2 AM5 AM8 AM11 AM2 PM5 PM8 PM11 PM2 AM5 AM8 AM11 AM2 PM
Rating
(10 max)
2
2
4
4
1
2
0
0
0
0
3
1
1
2
2
2
3
3
3
3
2
2
1
1
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
1.4
SW
1.5
SSW
1.5
SSW
1.9
SSW
2.1
SSW
2.2
SSW
2.3
SSW
2.2
SSW
2.1
SSW
2
SSW
2
SSW
2.5
SW
3
SSW
2.2
SSW
2.5
SSW
2.3
SW
2.2
SW
2.1
SSW
2.1
SSW
2
SSW
1.8
SSW
1.8
SSW
1.7
SSW
1.7
SSW
Period(s) (?)131313161514141414141313131012121212121212121212
Wave
Graph
(?)Metric surfscale
Energy kJ (?)7007227111706192519832093190217481556138424192519869165213981256121511771080952952864864
Wind
(km/h)
30
SE
30
ESE
25
ESE
10
ENE
20
NNW
20
N
30
NNW
35
NNW
35
NNW
30
N
10
SW
20
WSW
20
SW
20
SSW
20
SSW
25
SSW
20
SSW
20
S
20
SSE
20
SSE
20
SSE
25
SE
25
SE
30
SSE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
offoffoffcross-
off		cross-
on		crosscross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		crosscrosscrosscross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off
High Tide
/ height (m)
3:07PM
1.54
3:21AM
1.70
3:41PM
1.58
3:54AM
1.73
4:15PM
1.58
4:28AM
1.71
Low Tide
/ height (m)
9:11PM
0.03
9:37AM
-0.03
9:43PM
0.01
10:10AM
-0.05
10:16PM
0.02
10:45AM
-0.03
Wednesday
18
Thursday
19
Friday
20
Saturday
21
Sunrise-----6:48-------6:48-------6:50--
Sunset7:00-------7:00-------6:58-------
part cloud
cloud
cloud
cloud
light rain
part cloud
cloud
part cloud
part cloud
part cloud
rain showers
clear
clear
part cloud
rain showers
part cloud
cloud
clear
clear
clear
clear
clear
clear
clear
Rain (mm)
----1-----1---1---------
Temp. °C222121211818192019181919191919191818181818171819
Feels °C (?)191719211716161514151917161715151415151514131314
  • 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.

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 Dunes 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 Dunes at:
surf-forecast.com

Nearest locationNearest
Nearest locationNearest
Nearest locationNearest