Snow-ForecastSnow-ForecastMountain-ForecastMountain-ForecastTide-ForecastTide-ForecastWeather-ForecastWeather-Forecast
Search by country, region, or break
Search by country, region, or break

Quick Links

Surf Forecasts:

I and Js surfForecast / Cape Town / South Africa

information circle12 Day Weather and Surf, issued 1 pm Tuesday 17 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
15.6° C
 (Which is 4.4°C colder than average for this time of year)

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 5AM. The primary swell is predicted to be 2.1m and 14s period with a secondary swell of 1.2m and 7s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at I and Js in the next 12 days are 2.5m 15s and forecast to arrive on Tuesday (Feb 17) 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 2.5m 8s period and expected on Saturday (Feb 21) at 5PM.

Wave TypeTime (SAST) & Date Wave Height & Period
Next good surf (1 star+) 5AM (Wed 18th Feb)7ft (2.1m) 14s
Best Surf 5AM (Wed 18th Feb)7ft (2.1m) 14s
Most Powerful11PM (Tue 17th Feb)8ft (2.5m) 15s

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 Mostly dry. Warm (max 21°C on Tue afternoon, min 19°C on Wed morning). Winds increasing (calm on Tue night, strong winds from the SE by Thu night).

Days 3-6 Weather Summary Mostly dry. Warm (max 23°C on Sat afternoon, min 17°C on Sun night). Winds decreasing (strong winds from the SE on Fri night, light winds from the N by Sat night).

Tue
17
Wednesday
18
Thursday
19
Friday
20
Saturday
21
Sunday
22
Monday
23
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
Rating
(10 max)
3
3
3
1
1
1
0
1
2
0
1
1
0
1
1
0
1
0
1
1
2
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
2.3
SW
2.3
SW
1.9
SW
1.7
SW
1.7
SW
1.4
SW
1.6
SW
1.6
SW
1.3
SW
1.2
SW
0.9
SW
0.6
WNW
0.6
WNW
0.6
WNW
0.6
SSW
0.7
SW
0.9
SSW
1
SW
1.1
SW
1
SW
1.1
SW
Period(s) (?)151413131312131212111113131314141212111113
Wave
Graph
(?)Metric surfscale
Energy kJ (?)235820901266976961570933773494357198116116114140186273278293250451
Wind
(km/h)
15
SW
10
SSE
15
NW
25
SSE
30
SSE
30
SE
40
SSE
30
SE
10
SE
35
SE
20
ESE
15
SE
30
SE
10
N
20
NNW
20
NW
20
N
25
N
25
NW
15
N
5
NW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
oncrosscrosscrosscrosscrosscrosscross-
off		crosscrosscross-
off		cross-
off		crosscross-
off		cross-
off		crosscross-
off		cross-
off		cross-
off		cross-
off		glass
High Tide
/ height (m)
3:32PM
1.51
3:52AM
1.62
4:04PM
1.54
4:23AM
1.66
4:37PM
1.53
4:54AM
1.67
5:11PM
1.49
5:28AM
1.62
5:48PM
1.41
6:05AM
1.53
6:29PM
1.30
6:48AM
1.40
7:20PM
1.17
7:45AM
1.25
Low Tide
/ height (m)
9:41PM
0.04
10:03AM
0.08
10:10PM
0.02
10:35AM
0.05
10:40PM
0.03
11:08AM
0.05
11:12PM
0.08
11:44AM
0.10
11:47PM
0.17
12:24PM
0.20
12:27AM
0.28
1:11PM
0.32
1:17AM
0.42
Tue
17
Wednesday
18
Thursday
19
Friday
20
Saturday
21
Sunday
22
Monday
23
Sunrise--6:22--6:24--6:24--6:26--6:26--6:28--6:28
Sunset7:37--7:36--7:35--7:34--7:32--7:31--7:30--
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
clear
part cloud
part cloud
Rain (mm)
---------------------
Temp. °C212120212020202021222221232320201919201919
Feels °C (?)212119191717151521191721222118181916171920
  • 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

Latest Updates

Save Up to 20% on SIXT Rental Cars Worldwide – Exclusive Surf-Forecast Deal
travel
Surf Forecast

Save Up to 20% on SIXT Rental Cars Worldwide – Exclusive Surf-Forecast Deal

Surf road trips just got even better. Surf-Forecast users can now save up to 20% on SIXT rental cars worldwide during the promotional period until March 31, 2026. Whether you’re planning a legendary California road trip, chasing waves along Europe’s coasts, or exploring remote surf destinations, this exclusive SIXT offer helps you travel smarter and cheaper. And if you want some inspiration on where to go, check out our article Five Iconic Surf Road Trips. Click and get your SIXT discount

The World’s Most Inconsistent Waves
Ben Mondy

The World’s Most Inconsistent Waves

Huntington, Dribbleton, Virginia, Holland and the Superbank! We recently had a look at the world’s most consistent waves. This was based on the combination of swells and wind directed at 7,000 surf spots, as compiled from our data since 2006. Those stats, represented in easy-to-read graphics, are located under each wave’s spot guides, with historical swell and wind breakdowns available by month, season, and year. There is also an offshore filter, which shows how often the swells come with clean

Read more

Read more

Discover more articles and updates in the Greenroom.

submit an eyeball surf report

Quick surf report for I and Js:

join our community of surf reporters

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.

Nearest locationNearest
Nearest locationNearest
Nearest locationNearest