Double Mouth Surf Break

Lat Long: 32.71° S 28.33° E

Double Mouth 48 hour detailed Surf Forecast

Issued: 1 am 20 Sep 2026 (local time)

Forecast update in  hr  min

Today's Double Mouth sea temperature is
17.7°C
2.2° 

Double Mouth surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


How big are the waves at Double Mouth today (20 Sep):

  • Morning surf: Morning surf (20 Sep, local time) - 3.5ft (1.0m), 16s period with SSW swell.
  • Afternoon surf: Afternoon surf (20 Sep, local time) - 4.5ft (1.3m), 15s period with SSW swell.
  • Evening surf: Evening surf (20 Sep, local time) - 4ft (1.2m), 13s period with SSW swell.

The current surf forecast for Double Mouth at 6AM is: 1.5m 8s primary swell from a East direction and 0.6m 11s secondary swell from a South-southwest direction (forecast issued at 01:00am September 20). The wind direction is predicted to be offshore and the swell rating is 2.

Time (SAST) & DateWave HeightWave Period
Morning (20 Sep)3.5ft (1.0m)16s
Afternoon (20 Sep)4.5ft (1.3m)15s
Evening (20 Sep)4ft (1.2m)13s

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


Short Range Forecast

Mostly dry. Warm (max 23°C on Sun morning, min 18°C on Sun night). Winds increasing (calm on Sun morning, fresh winds from the NE by Tue afternoon).

Sunday
20
Monday
21
Tuesday
22
2 AM
5 AM
8 AM
11 AM
2 PM
5 PM
8 PM
11 PM
2 AM
5 AM
8 AM
11 AM
2 PM
5 PM
8 PM
11 PM
2 AM
5 AM
8 AM
11 AM
2 PM
5 PM
8 PM
11 PM
Rating
(10 max)
2
2
3
2
1
2
3
3
1
2
2
0
0
1
1
0
1
0
0
0
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.5
E
8
1.5
E
8
0.9
SSW
16
1.1
SSW
16
1.3
SSW
15
1.3
SSW
14
1.2
SSW
14
1.1
SW
13
0.9
SSW
13
0.9
SW
13
0.7
SW
13
0.7
SW
12
0.9
E
8
0.9
E
8
0.7
SSW
12
0.9
E
8
0.8
E
8
0.8
E
8
0.7
SSW
15
0.7
SSW
14
1.6
E
5
1.9
ENE
6
0.5
SW
13
0.5
SW
13
Wave Graph
Metric surfscale
Energy kJ
305
298
392
589
674
621
486
400
299
241
162
154
120
108
131
111
88
88
188
186
152
246
88
85
Wind (km/h)
5
NW
5
WNW
5
NW
5
SSW
10
SSE
5
SSW
5
WNW
5
WNW
5
SW
10
WSW
10
WSW
15
SSW
10
S
10
SSE
5
E
10
E
15
ENE
15
NE
20
NE
30
ENE
35
ENE
35
NE
30
NE
25
NE
Wind State
off
glassy
glassy
cross
cross-on
cross-on
cross-off
glassy
cross
cross-off
cross-off
cross-on
cross-on
cross-on
cross-on
cross-on
cross
cross
cross
cross
cross
cross
cross
cross
High Tide
12:14PM0.90m
00:33AM0.98m
1:22PM1.06m
1:24AM1.12m
1:51PM1.22m
Low Tide
3:59AM0.75m
6:19PM0.77m
7:01AM0.64m
7:25PM0.63m
7:36AM0.49m
7:56PM0.48m
cloud
cloud
part cloud
part cloud
part cloud
part cloud
clear
clear
clear
clear
clear
cloud
cloud
cloud
cloud
cloud
part cloud
part cloud
part cloud
part cloud
clear
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:58
5:58
5:56
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:00
6:00
6:01
 mm
Temp °C
19
19
20
23
22
20
20
19
19
18
19
20
20
20
19
19
19
19
19
21
22
21
20
19
Feels °C
19
19
21
23
21
20
21
19
19
18
19
19
20
21
20
19
19
18
17
18
19
17
17
18
  • 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
How to use the Wavefinder 

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 Double Mouth 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.


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