Big Bay Surf Break

Lat Long: 33.79° S 18.46° E

Big Bay 48 hour detailed Surf Forecast

Issued: 1 am 18 Sep 2026 (local time)

Forecast update in  hr  min

Today's Big Bay sea temperature is
10.9°C
4.7° 

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


How big are the waves at Big Bay today (18 Sep):

  • Morning surf: Morning surf (18 Sep, local time) - 5ft (1.6m), 11s period with SW swell.
  • Afternoon surf: Afternoon surf (18 Sep, local time) - 5ft (1.6m), 12s period with SW swell.
  • Evening surf: Evening surf (18 Sep, local time) - 5ft (1.6m), 13s period with SW swell.

The current surf forecast for Big Bay at 7AM is: 1.6m 11s primary swell from a Southwest direction and 1.0m 7s secondary swell from a South-southeast direction (forecast issued at 01:00am September 18). The wind direction is predicted to be offshore and the swell rating is 3.

Time (SAST) & DateWave HeightWave Period
Morning (18 Sep)5ft (1.6m)11s
Afternoon (18 Sep)5ft (1.6m)12s
Evening (18 Sep)5ft (1.6m)13s

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


Short Range Forecast

Mostly dry. Warm (max 26°C on Sun afternoon, min 11°C on Fri morning). Wind will be generally light.

Friday
18
Saturday
19
Sunday
20
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)
3
3
3
3
3
4
3
3
3
3
3
3
2
2
3
3
4
4
4
4
4
3
3
3
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)
1.7
SW
11
1.6
SW
11
1.6
SW
11
1.6
SW
11
1.6
SW
11
1.6
SW
13
1.6
SW
13
1.6
SW
13
1.6
SW
12
1.5
SW
12
1.5
SW
12
1.4
SW
12
1.2
SW
12
1.6
SW
14
1.7
SW
14
2
SW
14
2.1
SW
13
2.1
SW
13
2
SW
13
1.9
SW
13
1.7
WSW
13
1.7
WSW
13
1.6
WSW
13
1.5
WSW
12
Wave Graph
Metric surfscale
Energy kJ
739
652
640
640
600
796
796
784
736
657
646
514
407
978
1130
1429
1591
1474
1367
1182
1030
904
822
702
Wind (km/h)
15
ESE
10
ESE
15
SE
20
SE
20
SE
15
SE
20
SSE
15
ESE
10
SE
10
ESE
10
ESE
10
SE
15
S
20
SSE
20
SSE
15
SE
15
SE
15
ESE
10
ESE
10
SE
15
S
15
S
15
SE
15
SE
Wind State
off
off
off
off
off
off
cross-off
off
cross-off
off
off
cross-off
cross-off
cross-off
cross-off
cross-off
off
off
off
off
cross-off
cross-off
cross-off
off
High Tide
7:10AM1.01m
7:30PM1.00m
8:48AM0.92m
9:37PM0.93m
11:20AM0.96m
Low Tide
00:53AM0.53m
1:03PM0.63m
2:02AM0.64m
2:56PM0.73m
4:47AM0.65m
5:47PM0.67m
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:41
6:39
6:39
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:38
6:39
6:39
 mm
Temp °C
11
11
11
15
19
20
17
14
13
13
13
18
21
20
18
17
16
16
17
23
26
25
22
21
Feels °C
7
8
7
10
13
15
13
11
11
11
11
16
18
17
15
14
14
14
15
22
24
23
21
20
  • 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 Big Bay 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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