J-Bay Surf Break

Lat Long: 34.05° S 24.93° E

J-Bay 48 hour detailed Surf Forecast

Issued: 1 pm 17 Sep 2026 (local time)

Forecast update in  hr  min

Today's J-Bay sea temperature is
15.9°C
3.1° 

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 (17 Sep):

  • Morning surf: Morning surf (17 Sep, local time) - 7.5ft (2.3m), 13s period with SW swell.
  • Afternoon surf: Afternoon surf (17 Sep, local time) - 7.5ft (2.3m), 12s period with SW swell.
  • Evening surf: Evening surf (17 Sep, local time) - 7ft (2.1m), 12s period with SW swell.

The current surf forecast for J-Bay at 6PM is: 2.2m 12s primary swell from a Southwest direction and 0.7m 11s secondary swell from a East direction, 1.7m 7s secondary swell from a Southeast direction (forecast issued at 01:00pm September 17). The wind direction is predicted to be onshore.

Time (SAST) & DateWave HeightWave Period
Morning (17 Sep)7.5ft (2.3m)13s
Afternoon (17 Sep)7.5ft (2.3m)12s
Evening (17 Sep)7ft (2.1m)12s

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


Short Range Forecast

Mostly dry. Warm (max 20°C on Sun morning, min 13°C on Sat morning). Winds decreasing (fresh winds from the E on Fri afternoon, calm by Sat night).

Thu
17
Friday
18
Saturday
19
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)
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
3
3
3
2
3
4
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
2.3
SW
13
2.3
SW
12
2.3
SW
12
2.1
SW
12
2
SW
12
1.9
SW
12
1.9
SW
12
1.9
SW
12
1.9
SW
12
1.8
SW
12
1.6
SW
12
1.8
SW
11
1.8
SW
13
1.6
SW
13
1.6
SW
13
1.6
SW
12
1.6
SW
12
1.5
SW
12
1.3
SW
12
1.6
SW
12
1.3
SW
12
Wave Graph
Metric surfscale
Energy kJ
1778
1682
1500
1189
1094
1013
1013
1013
997
913
636
866
1021
865
851
730
781
682
503
661
489
Wind (km/h)
25
SE
30
ESE
30
SE
25
ESE
25
ESE
20
E
20
E
30
ESE
30
E
30
E
35
E
30
ENE
30
ENE
25
ENE
20
ENE
10
NNE
5
N
10
SSE
10
SE
5
E
5
NNW
Wind State
on
on
on
on
on
on
on
on
on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross
cross
on
on
cross-on
glassy
High Tide
6:38PM1.24m
6:55AM1.09m
7:11PM1.09m
7:50AM0.95m
8:56PM0.95m
Low Tide
12:25PM0.48m
00:53AM0.54m
12:56PM0.63m
1:41AM0.68m
2:00PM0.77m
cloud
cloud
cloud
cloud
cloud
part cloud
clear
clear
cloud
cloud
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
cloud
part cloud
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:16
6:13
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:12
6:13
6:14
 mm
Temp °C
16
16
16
15
15
15
15
16
16
16
17
16
15
14
14
13
17
19
19
19
18
Feels °C
10
10
10
9
10
11
10
10
10
11
11
11
10
9
11
11
16
18
18
19
19
  • 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.


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