I and Js Surf Break

Lat Long: 34.16° S 18.33° E

I and Js Surf Forecast and Surf Report

Issued: 7 pm 22 Jul 2026 (local time)

Forecast update in  hr  min

Today's I and Js sea temperature is
15.3° C
0.4° 

I and Js surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


I and Js surf forecast from 23 Jul 2026:

  • Best quality surf: Friday 24 Jul, 8AM (local time) - 13ft (4.0m), 15s period, SW swell with cross-offshore winds.
  • Most powerful swell: Thursday 23 Jul, 11PM (local time) - 15ft (4.5m), 16s period, SW swell with 10,400 kJ wave energy.
  • Next surfable swell (1★+): Friday 24 Jul, 8AM (local time) - 13ft (4.0m), 15s period with SW swell.

Best Forecast Surf Conditions for I and Js this week:

The surf forecast for I and Js over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Jul 24) at 8AM. The primary swell is predicted to be 4.0m and 15s period. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at I and Js in the next 16 days are 4.5m 16s and forecast to arrive on Thursday (Jul 23) at 11PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 4.0m 10s period and expected on Monday (Jul 27) at 8PM.

Wave TypeTime (SAST) & Date Wave Height & Period
Next good surf (1 star+) 8AM (Fri 24th Jul)13ft (4.0m) 15s
Best Surf 8AM (Fri 24th Jul)13ft (4.0m) 15s
Most Powerful11PM (Thu 23rd Jul)15ft (4.5m) 16s

Table - best surf conditions forecast for I and Js over the next 16 days.


Short Range Forecast

Light rain (total 9mm), mostly falling on Thu morning. Very mild (max 17°C on Sat afternoon, min 12°C on Wed night). Winds decreasing (fresh winds from the N on Wed night, calm by Fri morning).

Days 5-7 Weather Summary

Mostly dry. Very mild (max 18°C on Sat night, min 14°C on Sun night). Winds increasing (light winds from the SE on Sat night, gales from the ESE by Mon night).

Thursday
23
Friday
24
Saturday
25
Sunday
26
Monday
27
Tuesday
28
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
3
4
7
5
4
2
3
3
2
2
2
0
0
0
0
0
3
3
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.7
WSW
12
2.4
SW
11
2.5
SW
12
4.5
SW
16
3.5
SW
14
3
SW
14
2.5
SW
13
1.8
SSW
13
2.5
SW
12
2.5
SW
12
2
SW
11
1.8
SW
11
2.1
SW
13
2.3
SW
15
1.9
SW
15
3
SW
15
4
SSW
17
3.5
SSW
16
2.5
SSW
14
Wave Graph
Metric surfscale
Energy kJ
756
1395
2142
9305
4968
3889
2376
1083
1789
1742
1004
756
1352
2309
1538
3502
8608
5703
3066
Wind (km/h)
40
N
20
NNW
20
ESE
20
SE
0
E
15
SSE
25
SE
20
ESE
15
SE
20
SE
15
SE
20
SE
35
SSE
55
SE
65
SE
70
ESE
70
SE
45
ESE
30
ESE
Wind State
cross-off
cross-off
cross-off
cross
glassy
cross-on
cross
cross-off
cross
cross
cross
cross
cross
cross
cross
cross-off
cross-off
cross-off
cross-off
High Tide
9:43PM1.11m
10:47AM0.97m
11:05PM1.08m
12:11PM1.01m
00:19AM1.11m
1:10PM1.09m
1:14AM1.17m
1:54PM1.18m
1:57AM1.25m
2:30PM1.27m
2:33AM1.32m
3:02PM1.35m
3:06AM1.38m
Low Tide
4:33AM0.55m
4:46PM0.64m
5:57AM0.53m
6:15PM0.61m
6:59AM0.47m
7:15PM0.54m
7:44AM0.39m
7:59PM0.46m
8:20AM0.31m
8:36PM0.38m
8:52AM0.23m
9:09PM0.31m
part cloud
rain showers
light rain
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:46
7:45
7:45
7:43
7:43
7:43
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:59
6:00
6:00
6:00
6:01
6:01
6:02
 mm
4
5
Temp °C
14
13
13
13
12
13
13
13
17
18
17
17
15
15
15
15
14
15
16
Feels °C
8
6
12
8
9
11
10
8
14
15
14
14
11
6
5
4
1
6
12
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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Information about the I and Js Surf forecast

The above surf forecast table for I and Js provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at I and Js can be found by selecting the local surf guide option on the grey menu. Our I and Js surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (I and Js) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).

Further information to help with frequently asked questions about our surf forecast for I and Js may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.

Are you planning a holiday in Cape Town? If you are looking for accommodation near I and Js, camping, hotels and holiday cottages in Cape Town, consider staying in Cape Town which is 28 km (17 miles) away. Other places in and around Cape Town where you can find information about places to rent, and car hire include Bellville which is 40 km (25 miles) away, Robben Island, Stellenbosch and Kayamnandi.

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