I and Js Surf Forecast

/ Cape Town (69 surf breaks) /

South Africa (273 surf breaks)

Surf Forecasts:

I and Js surfForecast / Cape Town / South Africa

12 Day Weather and Surf, issued 1 am Friday 07 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 17.3° C
(Which is normal 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 Sunday (Nov 09) at 11PM. The primary swell is predicted to be 1.0m and 15s period with a secondary swell of 1.1m and 13s. 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 2.1m 16s and forecast to arrive on Tuesday (Nov 11) 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 8s period and expected on Friday (Nov 07) at 5PM.

Wave Type	Time (SAST) & Date	Wave Height & Period
Next good surf (1 star+)	11PM (Sun 9th Nov)	3.5ft (1.0m) 15s
Best Surf	11PM (Mon 10th Nov)	3.5ft (1.1m) 18s
Most Powerful	8AM (Tue 11th Nov)	7ft (2.1m) 16s

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

Updates in hr min s Forecast update imminent

12 Days Hourly

Print Table

	Short Range Forecast Mostly dry. Warm (max 24°C on Fri afternoon, min 16°C on Fri morning). Winds decreasing (strong winds from the SE on Fri afternoon, calm by Sun night).									Days 3-6 Weather Summary Mostly dry. Warm (max 21°C on Tue afternoon, min 17°C on Mon night). Winds increasing (calm on Mon night, fresh winds from the SSE by Tue night).
	Friday 07			Saturday 08			Sunday 09			Monday 10			Tuesday 11			Wednesday 12			Thursday 13
	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night
Rating (10 max)	0	0	0	0	0	0	2	0	3	3	2	4	3	1	1	0	0	1	1	0	0
Swell Height Map See all maps
Wave Height (m) & direction (?)	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	WSW	WSW	WSW	WSW	WSW	WSW	WSW	SW	SW	SW
Period(s) (?)	11	10	18	16	14	14	13	13	14	13	12	18	16	15	14	13	13	12	12	11	11
Wave Graph (?)
kJ (?)	169	110	108	348	590	716	755	600	915	653	465	940	1557	2198	1887	1346	1060	626	407	233	191
Wind (km/h)	ESE	SE	ESE	SE	SE	ESE	SSE	SE	N	NNW	WNW	SSW	S	SSE	SE	SSE	SSE	SSE	SSE	SE	ESE
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	cross- off	cross	cross- off	cross	cross	cross- off	cross	cross	cross- off	cross- off	cross	on	cross- on	cross	cross	cross- on	cross- on	cross	cross	cross	cross- off
High Tide / height (m)		4:14PM 1.63	4:45AM 1.50		5:00PM 1.50		5:34AM 1.40	5:52PM 1.35		6:30AM 1.29	6:53PM 1.19		7:41AM 1.20		8:14PM 1.07	9:09AM 1.17		9:53PM 1.03	10:33AM 1.19		11:16PM 1.06
Low Tide / height (m)	10:04AM 0.08		10:33PM 0.01	10:51AM 0.16		11:19PM 0.13	11:43AM 0.28		12:10AM 0.27	12:45PM 0.41		1:12AM 0.40		2:08PM 0.50	2:32AM 0.49		3:50PM 0.53	4:03AM 0.52		5:14PM 0.47

	Friday 07			Saturday 08			Sunday 09			Monday 10			Tuesday 11			Wednesday 12			Thursday 13
Sunrise	5:39	-	-	5:39	-	-	5:39	-	-	5:37	-	-	5:37	-	-	5:35	-	-	5:35	-	-
Sunset	-	7:20	-	-	7:21	-	-	7:22	-	-	7:22	-	-	7:23	-	-	7:24	-	-	7:25	-

Rain (mm)	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
Temp. °C	21	24	21	24	22	21	23	23	22	19	18	17	20	21	19	19	19	18	20	20	21
Feels °C (?)	17	19	15	21	16	15	24	21	21	19	18	18	20	20	16	16	16	15	19	17	15

Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)

Quick surf report for I and Js:

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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.