I and Js surfForecast / Cape Town / South Africa

information circle12 Day Weather and Surf, issued 7 am Tuesday 25 Nov 2025 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
15.2° C
(Which is 2.9°C colder than average for this time of year)


Best Forecast Surf Conditions for I and Js this week:

The most powerful waves expected at I and Js in the next 12 days are 2.5m 14s and forecast to arrive on Tuesday (Nov 25) 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 3.5m 8s period and expected on Thursday (Nov 27) at 11AM.

Wave TypeTime (SAST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful11PM (Tue 25th Nov)8ft (2.5m) 14s

Table - best surf conditions forecast for I and Js over the next 12 days.

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Mostly dry. Warm (max 23°C on Tue afternoon, min 18°C on Tue morning). Winds increasing (light winds from the SSE on Tue morning, near gales from the SE by Thu afternoon).

Days 3-6 Weather Summary Light rain (total 6mm), mostly falling on Sat morning. Warm (max 23°C on Fri morning, min 17°C on Fri night). Winds increasing (light winds from the SSE on Fri morning, strong winds from the SE by Sun night).

Tuesday
25
Wednesday
26
Thursday
27
Friday
28
Saturday
29
Sunday
30
Monday
01
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
2
3
0
0
0
0
0
0
0
0
0
0
0
0
0
2
0
0
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
1.8
SW
1.6
SSW
2.4
SW
1.9
SW
1.8
SW
1.6
SW
0.8
WSW
0.9
SW
0.6
WSW
0.5
SW
0.4
WSW
0.5
SSW
1.7
SW
1.9
SSW
2.3
SSW
2
SW
1.9
SW
1.4
SW
2
SW
2
SW
1.9
SW
Period(s) (?)12161412121110101010108789121111131312
Wave
Graph
(?)Metric surfscale
Energy kJ (?)913127820501083826553141148734838382763938981094940467127912791065
Wind
(km/h)
5
SSE
15
S
35
SSE
35
SSE
35
SSE
40
SE
50
SE
55
SE
35
ESE
10
SSE
10
NW
30
N
30
WSW
20
SW
25
S
15
SSE
30
SSE
35
SE
35
SSE
45
SE
40
SE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
crosscross-
on
crosscrosscrosscrosscrosscrosscross-
off
crosscrosscross-
off
cross-
on
oncross-
on
crosscross-
on
crosscrosscrosscross
High Tide
/ height (m)
5:56PM
1.18
6:41AM
1.19
6:49PM
1.11
7:41AM
1.18
7:59PM
1.06
8:51AM
1.19
9:25PM
1.06
10:02AM
1.25
10:44PM
1.11
11:05AM
1.34
11:49PM
1.21
12:02PM
1.44
12:44AM
1.32
Low Tide
/ height (m)
11:54AM
0.47
12:12AM
0.38
12:47PM
0.53
1:04AM
0.44
1:57PM
0.55
2:09AM
0.48
3:19PM
0.52
3:26AM
0.49
4:37PM
0.43
4:40AM
0.45
5:40PM
0.30
5:45AM
0.38
6:34PM
0.18
Tuesday
25
Wednesday
26
Thursday
27
Friday
28
Saturday
29
Sunday
30
Monday
01
Sunrise5:28--5:28--5:28--5:28--5:28--5:28--5:28--
Sunset-7:37--7:37--7:38--7:39--7:40--7:42--7:43-
clear
clear
clear
clear
clear
part cloud
cloud
cloud
part cloud
clear
clear
rain showers
rain showers
clear
rain showers
part cloud
clear
clear
clear
clear
clear
Rain (mm)
-----------13-2------
Temp. °C222320192020202220232218191919181918202019
Feels °C (?)212117151515131312242316171616151512141411
  • 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 12 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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