J-Bay Surf Break

Lat Long: 34.05° S 24.93° E

J-Bay 48 hour detailed Surf Forecast

Issued: 1 pm 20 Aug 2026 (local time)

Forecast update in  hr  min

Today's J-Bay sea temperature is
13.3° C
5.6° 

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 (20 Aug):

  • Morning surf: Morning surf (20 Aug, local time) - 11ft (3.5m), 14s period with SW swell.
  • Afternoon surf: Afternoon surf (20 Aug, local time) - 13ft (4.0m), 14s period with SW swell.
  • Evening surf: Evening surf (20 Aug, local time) - 11ft (3.5m), 13s period with SW swell.

The current surf forecast for J-Bay at 5PM is: 3.5m 13s primary swell from a Southwest direction and 0.3m 9s secondary swell from a East direction (forecast issued at 01:00pm August 20). The wind direction is predicted to be cross-shore.

Time (SAST) & DateWave HeightWave Period
Morning (20 Aug)11ft (3.5m)14s
Afternoon (20 Aug)13ft (4.0m)14s
Evening (20 Aug)11ft (3.5m)13s

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


Short Range Forecast

Mostly dry. Very mild (max 17°C on Thu afternoon, min 13°C on Thu night). Winds increasing (calm on Thu night, strong winds from the WSW by Sat morning).

Thu
20
Friday
21
Saturday
22
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)
7
4
4
5
5
4
4
4
3
1
0
0
1
3
4
2
1
1
2
3
3
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)
4
SSW
14
4
SW
14
3.5
SW
13
3.5
SW
13
3
SW
13
3
SW
13
3
SW
12
2.5
SW
12
2.5
SW
12
2.3
SW
12
2.3
SW
12
2.1
SW
12
1.5
SSW
12
1.7
SSW
11
1.7
SSW
12
1.8
SSW
11
2.5
SW
11
1.6
SSW
13
1.7
SSW
12
2.4
WSW
8
2.4
SW
9
Wave Graph
Metric surfscale
Energy kJ
6035
5874
4873
3937
3344
2815
2233
1978
1742
1524
1420
1102
644
662
748
814
1567
848
822
696
881
Wind (km/h)
15
WSW
15
SSW
15
SSW
5
W
5
WNW
10
NW
5
WNW
5
NW
5
E
20
SE
25
ESE
20
ENE
15
ENE
10
NNE
10
WNW
25
W
45
WSW
45
WSW
30
WSW
25
W
20
W
Wind State
cross-off
cross
cross
cross-off
off
off
glassy
glassy
cross-on
cross-on
on
cross-on
cross-on
cross
off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
High Tide
8:17PM1.09m
9:08AM0.94m
10:35PM1.00m
12:36PM0.96m
Low Tide
1:47PM0.62m
2:53AM0.70m
3:08PM0.75m
5:54AM0.72m
6:33PM0.74m
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:52
6:52
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:52
5:53
5:53
 mm
Temp °C
16
17
15
14
14
13
13
13
15
16
16
14
13
13
14
14
17
17
16
15
15
Feels °C
13
14
13
13
13
12
12
12
14
13
12
11
11
12
12
10
10
10
10
12
13
  • 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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