Derde Steen surf break

Derde Steen surfForecast / Cape Town / South Africa

information circle48hr Weather and Surf, issued 1 pm Monday 15 Sep 2025 SAST
Forecast update in hr  min  s Forecast update imminent
Derde Steen surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Derde Steen sea temperature is
14.8° C
(Which is slightly cooler than normal)


How big are the waves at Derde Steen today?

The current surf forecast for Derde Steen at 7PM is: 3.0m 12s primary swell from a Southwest direction and 1.3m 15s secondary swell from a West-southwest direction, 1.5m 5s secondary swell from a Northwest direction (forecast issued at 01:00pm September 15). The wind direction is predicted to be cross-shore.

Time (SAST) & DateWave HeightWave Period
Morning (15 Sep)6ft (1.9m)12s
Afternoon (15 Sep)7.5ft (2.3m)12s
Evening (15 Sep)10ft (3.0m)12s

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

Updates in  hr  min  s Forecast update imminent
Monday
15
Tuesday
16
Wednesday
17
Thursday
18
11AM2PM5PM8PM11PM2AM5AM8AM11AM2PM5PM8PM11PM2AM5AM8AM11AM2PM5PM8PM11PM2AM5AM8AM
Rating
(10 max)
1
0
0
0
0
0
0
0
!
!
!
!
3
3
!
!
!
1
1
2
3
4
4
3
Swell
Height Map
Wave Height (m) & direction (?)
2.1
SW
2.2
SW
2.4
SW
3
SW
4
WSW
4.5
WSW
5
SW
5
WSW
4.5
WSW
4
WSW
4
SW
3.5
SW
2.5
WSW
2.5
SSW
3
SSW
3
SSW
3
SSW
2.5
SSW
2.5
SSW
2.5
SSW
2.3
SSW
2.2
SSW
2.2
SSW
1.6
SSW
Period(s) (?)121212121212121312121211121112121212121212121111
Wave
Graph
(?)Metric surfscale
Energy (?)192321142486315651726481787175025895487040503842336333503295330830662696245121361854163813951151
Wind
(km/h)
30
NW
35
NW
40
NNW
45
NW
40
WNW
40
WNW
30
SW
25
SW
20
SW
20
SW
15
SW
10
SSW
10
S
10
SSE
5
SE
5
ESE
10
SW
15
WSW
15
SW
15
SSW
5
S
0
E
5
ENE
10
NE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
crosscrosscrosscrosscross-
on
cross-
on
cross-
on
cross-
on
cross-
on
oncross-
on
cross-
on
cross-
on
crossglassglasscross-
on
oncross-
on
cross-
on
crossglassglasscross-
off
High Tide
/ height (m)
9:47AM
1.03
10:34PM
1.07
11:41AM
1.10
12:10AM
1.14
12:47PM
1.23
1:07AM
1.25
Low Tide
/ height (m)
4:11PM
0.60
5:18AM
0.51
6:04PM
0.51
6:33AM
0.41
7:05PM
0.38
7:20AM
0.30
Monday
15
Tuesday
16
Wednesday
17
Thursday
18
Sunrise-------6:45-------6:43-------6:41
Sunset--6:37-------6:37-------6:37-----
clear
clear
cloud
cloud
rain showers
light rain
light rain
part cloud
clear
part cloud
clear
part cloud
cloud
part cloud
clear
clear
clear
clear
part cloud
clear
part cloud
clear
clear
part cloud
Rain (mm)
----212-----------------
Temp. °C151515151515141313131313131211111313131313121111
Feels °C (?)108888888889101099910899111098
  • 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

Eyeball surf reportRecent Eyeball Surf Reports for Cape Town

  1. weather stationWind Update Still cross-shore at Derde Steen (moderate winds from the NNW at Observatory wx 19 km from Derde Steen). 2.0m 11s groundswell from the WSW with a 1.1m 15s groundswell, also from the WSW. 2 swells combining so expect closeout sets.

    Derde Steen
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19 km away, 20 min ago

21 km/h
NNW
0.0
14.8
Air / Water (°C)
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