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Surf Forecasts:

I and Js surfForecast / Cape Town / South Africa

information circle12 Day Weather and Surf, issued 1 am Wednesday 11 Feb 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
19.3° C
 (Which is slightly cooler than normal)

Best Forecast Surf Conditions for I and Js this week:

The surf forecast for I and Js over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Feb 18) at 8AM. The primary swell is predicted to be 1.8m and 14s 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 12 days are 3.5m 14s and forecast to arrive on Saturday (Feb 14) at 8AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3.0m 7s period and expected on Sunday (Feb 15) at 8PM.

Wave TypeTime (SAST) & Date Wave Height & Period
Next good surf (1 star+) 8AM (Wed 18th Feb)6ft (1.8m) 14s
Best Surf 8AM (Wed 18th Feb)6ft (1.8m) 14s
Most Powerful 8AM (Sat 14th Feb)11ft (3.5m) 14s

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

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table

Short Range Forecast Some drizzle, heaviest during Fri night. Warm (max 22°C on Wed afternoon, min 18°C on Thu afternoon). Winds increasing (light winds from the S on Wed afternoon, strong winds from the SE by Thu night).

Days 3-6 Weather Summary Mostly dry. Warm (max 27°C on Mon afternoon, min 16°C on Sat night). Winds decreasing (strong winds from the SE on Sat night, light winds from the SSE by Mon afternoon).

Wednesday
11
Thursday
12
Friday
13
Saturday
14
Sunday
15
Monday
16
Tuesday
17
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
2
0
0
2
0
2
2
0
2
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
1
SW
1.1
SW
2.5
S
2.1
SW
2.5
SW
2.5
SW
2.5
SSW
2.2
SW
3.5
SSW
3.5
SSW
3
SSW
2.5
SSW
2.1
SSW
1.9
SSW
1.4
SW
1.2
SSW
0.7
SW
1.2
SW
1.7
SW
1.7
SW
1.8
SW
Period(s) (?)11118101313121214131313121212111917161514
Wave
Graph
(?)Metric surfscale
Energy kJ (?)2162637567662103195118751332424243973136216413631039578341369822138412291382
Wind
(km/h)
20
S
25
S
45
SSE
40
SE
45
SE
35
SE
30
S
30
SSW
35
S
35
SSE
45
SSE
45
SE
25
ESE
45
SE
40
ESE
20
ESE
25
SSE
25
ESE
15
SE
35
SE
25
ESE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on		cross-
on		crosscrosscrosscrosscross-
on		cross-
on		cross-
on		crosscrosscross-
off		cross-
off		crosscross-
off		cross-
off		crosscross-
off		crosscrosscross-
off
High Tide
/ height (m)
10:39AM
0.98
12:15AM
0.95
12:21PM
1.04
1:16AM
1.06
1:17PM
1.15
1:54AM
1.19
1:55PM
1.26
2:25AM
1.32
2:29PM
1.36
2:54AM
1.44
3:00PM
1.45
3:23AM
1.54
3:32PM
1.51
3:52AM
1.62
Low Tide
/ height (m)
5:54PM
0.62
6:22AM
0.67
7:04PM
0.51
7:21AM
0.56
7:44PM
0.40
7:59AM
0.45
8:16PM
0.28
8:32AM
0.33
8:44PM
0.18
9:02AM
0.23
9:12PM
0.10
9:32AM
0.14
9:41PM
0.04
Wednesday
11
Thursday
12
Friday
13
Saturday
14
Sunday
15
Monday
16
Tuesday
17
Sunrise6:16--6:18--6:18--6:18--6:20--6:20--6:22--
Sunset-7:44--7:43--7:42--7:40--7:39--7:38--7:37-
part cloud
clear
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
rain showers
cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
Rain (mm)
--------1------------
Temp. °C212221191918191920191918192321222724242523
Feels °C (?)20211612121115151512119141513192419222218
  • 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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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 I and Js 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.

View detailed surf forecast for I and Js at:
surf-forecast.com

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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