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 circle48hr Weather and Surf, issued 1 am Saturday 20 Dec 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
18.9° C
 (Which is normal for this time of year)

How big are the waves at I and Js today?

The current surf forecast for I and Js at 3AM is: 2.2m 12s primary swell from a South-southwest direction and 0.3m 10s secondary swell from a West-southwest direction, 1.6m 5s secondary swell from a Southeast direction (forecast issued at 01:00am December 20). The wind direction is predicted to be cross-shore.

Time (SAST) & DateWave HeightWave Period
Morning (20 Dec)8ft (2.4m)13s
Afternoon (20 Dec)8ft (2.5m)14s
Evening (20 Dec)7ft (2.2m)13s

Table - waves today at I and Js. (Swell directed towards the surf break)

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table
Saturday
20
Sunday
21
Monday
22
11 PM2 AM5 AM8 AM11 AM2 PM5 PM8 PM11 PM2 AM5 AM8 AM11 AM2 PM5 PM8 PM11 PM2 AM5 AM8 AM11 AM2 PM5 PM8 PM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
1
1
0
0
0
0
0
0
0
1
0
0
0
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
2
SSW
2.1
SSW
2.2
SSW
2.4
SSW
2.5
SSW
2.5
SSW
2.4
SSW
2.2
SW
2.1
SW
2
SW
1.8
SW
1.3
SSW
1.3
SW
1.1
SW
1.2
SW
1.2
SW
1.3
SW
1.3
SW
1.2
SW
1.1
SW
1.1
SW
1.1
SW
1.1
SW
1
WSW
Period(s) (?)121212131414141313131212121212121111111111111111
Wave
Graph
(?)Metric surfscale
Energy kJ (?)1135132015231771244624802250173615181285925429440325414414418396347297292263263234
Wind
(km/h)
45
SE
40
SE
35
SE
40
SE
40
SE
45
SSE
50
SSE
50
SE
45
SE
40
SE
35
SE
30
ESE
25
SE
40
SE
45
SE
45
SE
45
SE
35
SE
25
ESE
15
ESE
20
SE
30
SSE
35
SSE
40
SSE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
crosscrosscrosscrosscrosscrosscrosscrosscrosscrosscross-
off		cross-
off		crosscrosscrosscrosscrosscrosscross-
off		cross-
off		crosscrosscrosscross-
on
High Tide
/ height (m)
3:23AM
1.35
3:27PM
1.39
3:57AM
1.37
4:01PM
1.39
4:31AM
1.38
4:35PM
1.37
Low Tide
/ height (m)
9:13PM
0.20
9:26AM
0.31
9:45PM
0.18
10:00AM
0.31
10:17PM
0.18
10:34AM
0.31
Saturday
20
Sunday
21
Monday
22
Sunrise---5:30-------5:31-------5:31----
Sunset------7:57-------7:57-------7:58-
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
Rain (mm)
------------------------
Temp. °C181818192121212020201920232423222121202122232221
Feels °C (?)121212131514141313151416201817151517182121211917
  • 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

Read more

Read more

Discover more articles and updates in the Greenroom.

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

Nearest locationNearest
Nearest locationNearest
Nearest locationNearest