J-Bay Surf Break

Lat Long: 34.05° S 24.93° E

J-Bay 48 hour detailed Surf Forecast

Issued: 7 am 17 Aug 2026 (local time)

Forecast update in  hr  min

Today's J-Bay sea temperature is
11.7° C
7.2° 

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 Aug):

  • Morning surf: Morning surf (17 Aug, local time) - 7ft (2.1m), 14s period with SW swell.
  • Afternoon surf: Afternoon surf (17 Aug, local time) - 8ft (2.4m), 13s period with SW swell.
  • Evening surf: Evening surf (17 Aug, local time) - 7ft (2.2m), 13s period with WSW swell.

The current surf forecast for J-Bay at 2PM is: 2.4m 13s primary swell from a Southwest direction and 1.0m 11s secondary swell from a East direction (forecast issued at 07:00am August 17). The wind direction is predicted to be cross-shore.

Time (SAST) & DateWave HeightWave Period
Morning (17 Aug)7ft (2.1m)14s
Afternoon (17 Aug)8ft (2.4m)13s
Evening (17 Aug)7ft (2.2m)13s

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


Short Range Forecast

Mostly dry. Very mild (max 19°C on Wed afternoon, min 12°C on Tue night). Winds increasing (calm on Tue night, fresh winds from the WSW by Wed afternoon).

Monday
17
Tuesday
18
Wednesday
19
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)
4
4
3
3
4
4
4
4
4
4
3
3
4
4
3
3
3
4
4
3
2
2
2
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)
1.8
SW
14
2
SW
14
2.3
SW
14
2.4
SW
13
2.4
WSW
13
2.2
WSW
13
2.2
WSW
13
2.2
SW
13
2.2
SW
13
2.2
SW
13
2.1
SW
13
2.4
SW
13
2.5
SW
13
2.5
SW
12
3
SW
13
3
SW
13
3
SW
12
3
SW
12
3
SW
13
3
SW
12
3
SW
12
3
SW
12
3
SW
12
Wave Graph
Metric surfscale
Energy kJ
1307
1559
1886
2036
1915
1699
1699
1599
1648
1623
1589
1982
2235
2212
2744
2702
2451
2331
2369
2331
2412
2580
2735
Wind (km/h)
5
N
5
NNW
5
SSW
15
SSW
15
SW
10
WNW
10
WNW
15
WNW
15
W
15
W
20
WSW
20
SW
10
SW
0
WNW
5
NNE
10
NE
10
NNE
10
N
5
WSW
20
SW
30
WSW
30
WSW
30
WSW
Wind State
glassy
glassy
cross
cross
cross-off
off
off
off
off
off
cross-off
cross-off
cross-off
glassy
cross
cross
cross
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
High Tide
6:29PM1.54m
6:39AM1.33m
6:59PM1.39m
7:09AM1.19m
7:31PM1.24m
Low Tide
12:11PM0.20m
00:40AM0.32m
12:39PM0.33m
1:12AM0.45m
1:09PM0.48m
part cloud
clear
clear
cloud
part cloud
clear
part cloud
part cloud
cloud
part cloud
part cloud
cloud
part cloud
part cloud
clear
clear
clear
clear
clear
part cloud
clear
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:56
6:56
6:54
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:51
5:52
5:52
 mm
Temp °C
14
14
16
18
17
15
15
15
15
15
17
16
16
15
14
13
12
12
17
19
15
14
14
Feels °C
13
13
15
16
14
13
13
13
13
14
14
13
15
15
13
12
10
10
16
16
10
9
9
  • 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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