I and Js surfForecast / Cape Town / South Africa

information circle16 Day Weather and Surf, issued 7 pm Tuesday 28 Apr 2026 SAST
Forecast update in hr  min  s Forecast update imminent
I and Js surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's I and Js sea temperature is
18.4° C
(Which is slightly warmer than usual)

Best Forecast Surf Conditions for I and Js this week:

The most powerful waves expected at I and Js in the next 16 days are 3.0m 16s and forecast to arrive on Thursday (Apr 30) at 5PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.5m 11s period and expected on Tuesday (May 05) at 11PM.

Wave TypeTime (SAST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 5PM (Thu 30th Apr)10ft (3.0m) 16s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Mostly dry. Very mild (max 16°C on Tue night, min 14°C on Wed morning). Winds increasing (light winds from the WSW on Thu night, strong winds from the NNW by Fri afternoon).

Days 5-7 Weather Summary

Heavy rain (total 20mm), heaviest during Sun night. Very mild (max 18°C on Sun morning, min 15°C on Fri night). Winds decreasing (strong winds from the N on Fri night, moderate winds from the N by Sat night).

Wednesday
29
Thursday
30
Friday
1
Saturday
2
Sunday
3
Monday
4
Tue
5
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Rating
(10 max)
0
0
0
0
0
3
4
1
1
1
1
2
2
2
2
1
0
0
0
3
2
Swell
Height Map
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
Wave
Height (m)
Direction
Period (s)
1.2
SW
9
1
SW
9
1.4
SW
13
1.1
SW
10
1.2
SSW
14
3
SSW
16
3
SSW
14
2.5
SW
13
2.5
SW
12
3
SW
12
2.5
WSW
11
2.1
WSW
11
2
W
10
1.2
WSW
15
1.2
WSW
14
2.2
WSW
13
2.5
WSW
13
3
SW
11
3.5
SW
11
2.4
WSW
12
2.5
S
10
Wave Graph
Metric surfscale
Energy kJ
251
170
585
211
585
4340
3035
2140
1771
2268
1658
1027
867
627
594
1609
2005
2125
2970
1570
1308
Wind (km/h)
25
SE
20
SE
30
SSE
30
SE
25
SSE
20
S
10
NW
40
NNW
40
NNW
45
N
35
NNW
30
NNW
25
N
30
N
30
NNW
25
WNW
30
WSW
30
SW
20
S
20
SSE
20
SSE
cross
cross
cross
cross
cross-on
cross-on
cross
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross
cross-on
on
cross-on
cross
cross
High Tide
1:45AM1.47m
2:12PM1.37m
2:17AM1.50m
2:42PM1.40m
2:47AM1.51m
3:12PM1.42m
3:17AM1.49m
3:42PM1.41m
3:47AM1.45m
4:12PM1.38m
4:18AM1.40m
4:43PM1.32m
4:50AM1.32m
5:17PM1.26m
Low Tide
8:09AM0.15m
8:12PM0.24m
8:38AM0.12m
8:43PM0.23m
9:07AM0.11m
9:13PM0.22m
9:35AM0.12m
9:43PM0.24m
10:04AM0.16m
10:13PM0.28m
10:33AM0.22m
10:44PM0.34m
11:04AM0.29m
clear
clear
clear
clear
clear
part cloud
part cloud
cloud
part cloud
light rain
rain showers
cloud
part cloud
part cloud
part cloud
rain showers
rain showers
rain showers
rain showers
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:18
7:20
7:20
7:22
7:22
7:22
7:24
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:08
6:07
6:06
6:05
6:04
6:02
6:02
6:01
2
1
12
3
2
1
Temp °C
16
15
16
16
16
16
16
15
16
16
15
16
17
18
18
18
17
17
17
16
16
11
11
11
10
11
11
13
10
8
9
9
11
14
13
14
15
12
11
11
10
11
Swell 1
Height (m)
Direction
Period (s)
2
SSE
12
2.1
SSE
11
1.8
SSE
13
1.1
SW
10
1.2
SSW
14
3
SSW
16
3
SSW
14
2.5
SW
13
2.5
SW
12
3
SW
12
2.5
WSW
11
2.1
WSW
11
2
W
10
1.6
WSW
10
1.2
WSW
14
2.2
WSW
13
0.8
SSW
12
1
WSW
12
0.3
SW
20
2.4
WSW
12
1.8
WSW
11
Energy kJ
1084
1124
1103
211
585
4340
3035
2140
1771
2268
1658
1027
867
482
594
1609
195
292
61
1570
771
Swell 2
Height (m)
Direction
Period (s)
1.2
SW
9
1
SW
9
1.4
SW
13
0.8
SW
13
1.1
SSE
12
0.9
SSE
12
0.5
SE
11
0.3
SE
11
0.2
SSE
10
0.3
S
15
0.9
S
11
1.1
S
11
0.9
S
10
1.2
WSW
15
1.2
WSW
10
0.7
S
13
0.1
SE
13
0.1
SE
12
0.1
SE
12
0.6
SW
18
0.9
WSW
17
Energy kJ
251
170
585
202
347
211
59
18
10
39
195
291
171
627
306
171
7
6
6
258
516
Swell 3
Height (m)
Direction
Period (s)
0.4
S
11
0.6
SW
14
0.2
S
10
0.5
SW
16
1
SW
12
0.1
W
21
0.4
SSE
14
0.4
WSW
18
0.9
WSW
16
0.9
SSW
10
0.9
SW
10
0.4
SSW
10
0.1
S
13
0.1
SW
22
0.3
SSE
13
Energy kJ
38
162
8
125
268
9
69
126
412
180
148
33
3
18
35
Wind waves
Height (m)
Direction
Period (s)
0.9
SSE
4
2
SSE
12
0.9
SE
4
0.9
NW
4
1.6
NW
5
2
NNW
6
1.9
NNW
6
1.5
NNW
6
1
NNW
5
0.9
NNW
4
1.6
NW
5
0.9
NNW
5
2.5
WSW
13
3
SW
11
3.5
SW
11
2.5
S
11
2.5
S
10
Energy kJ
34
1173
27
28
140
275
266
159
54
28
140
42
2005
2125
2970
1379
1308
Nearest Offshore or Glassy
Rating
(10 max)
4
2
5
4
3
4
4
4
4
4
3
3
2
4
2
2
1
2
4
4
4
Distance (km)
5
2
411
8
50
3
9
185
328
278
32
32
32
65
13
9
23
1290
3
3
5
Best forecast wave conditions in Cape Town
Rating
(10 max)
4
4
4
4
4
3
3
4
3
3
1
4
5
4
Best forecast wave conditions in South Africa
Rating
(10 max)
9
8
5
4
4
6
5
4
4
4
5
4
4
4
4
3
3
2
4
5
4
Header Global
Rating
(10 max)
9
8
8
6
5
6
6
7
5
4
5
4
4
4
4
4
7
5
4
4
4
  • 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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