J-Bay Surf Break

Lat Long: 34.05° S 24.93° E

J-Bay 48 hour detailed Surf Forecast

Issued: 1 am 10 Sep 2026 (local time)

Forecast update in  hr  min

Today's J-Bay sea temperature is
12.8°C
6.1° 

J-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 J-Bay today (10 Sep):

  • Morning surf: Morning surf (10 Sep, local time) - 4ft (1.2m), 13s period with SW swell.
  • Afternoon surf: Afternoon surf (10 Sep, local time) - 5ft (1.6m), 16s period with SW swell.
  • Evening surf: Evening surf (10 Sep, local time) - 7ft (2.1m), 15s period with SW swell.

The current surf forecast for J-Bay at 4AM is: 1.0m 13s primary swell from a Southwest direction and 0.8m 9s secondary swell from a East direction (forecast issued at 01:00am September 10). An open ocean swell of 0.5m 3s is not directed at the surf break. The wind direction is predicted to be cross-offshore and the swell rating is 2.

Time (SAST) & DateWave HeightWave Period
Morning (10 Sep)4ft (1.2m)13s
Afternoon (10 Sep)5ft (1.6m)16s
Evening (10 Sep)7ft (2.1m)15s

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


Short Range Forecast

Light rain (total 4mm), mostly falling on Sat night. Warm (max 20°C on Thu morning, min 17°C on Thu morning). Winds increasing (calm on Fri morning, fresh winds from the E by Sat night).

Thursday
10
Friday
11
Saturday
12
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
2
2
2
3
3
3
4
4
4
4
3
0
0
0
0
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
SW
13
1
SW
13
1.2
SW
13
1.2
SW
13
1.5
SW
16
2.1
SW
16
2.1
SW
15
2.1
SW
14
2.2
SW
14
2.1
SW
13
2
SW
13
1.9
SW
13
2.1
SW
13
1.6
SW
12
1.6
SW
12
1.6
SW
12
1.5
SW
12
1.5
SW
12
1.3
SW
12
1.9
ESE
7
1.1
SW
15
1.6
SW
14
2
SSW
17
2.2
SSW
17
Wave Graph
Metric surfscale
Energy kJ
326
331
480
481
1144
2147
1907
1812
1875
1544
1306
1204
1352
811
785
689
614
603
486
319
489
1092
2378
2895
Wind (km/h)
15
W
15
WSW
25
WSW
25
WSW
25
SW
25
SW
20
WSW
15
WSW
15
WSW
10
W
5
W
5
SSE
10
SSE
20
ESE
20
ENE
20
E
15
E
15
E
20
E
15
E
20
ESE
30
ESE
30
ESE
25
ESE
Wind State
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
glassy
cross-on
on
cross-on
cross-on
cross-on
on
on
on
on
on
on
on
High Tide
3:02AM1.61m
3:22PM1.77m
3:36AM1.66m
3:54PM1.83m
4:07AM1.67m
4:24PM1.83m
Low Tide
9:09AM0.03m
9:35PM0.03m
9:41AM-0.02m
10:07PM-0.00m
10:10AM-0.03m
10:36PM0.01m
clear
clear
clear
part cloud
part cloud
cloud
cloud
light rain
cloud
part cloud
cloud
cloud
part cloud
cloud
part cloud
part cloud
cloud
cloud
cloud
cloud
cloud
part cloud
cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:26
6:26
6:24
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:07
6:07
6:08
 mm
1
Temp °C
18
18
17
20
20
18
18
18
17
17
17
18
19
18
17
17
17
17
17
19
20
19
18
18
Feels °C
18
18
15
18
18
16
17
17
16
17
17
19
18
16
15
15
16
16
16
18
18
16
15
16
  • 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 J-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.


Nearest locationNearest