Extensions Surf Forecast

/ Cape Town (69 surf breaks) /

South Africa (273 surf breaks) / Lat Long: (34.34° S 18.46° E)

Surf Forecasts:

Extensions surfForecast / Cape Town / South Africa

12 Day Weather and Surf, issued 7 pm Wednesday 05 Nov 2025 SAST

Forecast update in hr min s Forecast update imminent

Extensions surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.

Today's Extensions sea temperature is 17.5° C
(Which is normal for this time of year)

Best Forecast Surf Conditions for Extensions this week:

The surf forecast for Extensions 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 1.3m and 13s period. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Extensions 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-onshore 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 06) at 8PM.

Wave Type	Time (SAST) & Date	Wave Height & Period
Next good surf (1 star+)	11PM (Sun 9th Nov)	4.5ft (1.3m) 13s
Best Surf	11PM (Sun 9th Nov)	4.5ft (1.3m) 13s
Most Powerful	8AM (Tue 11th Nov)	7ft (2.1m) 16s

Table - best surf conditions forecast for Extensions 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 21°C on Fri afternoon, min 15°C on Thu night). Winds decreasing (gales from the ESE on Thu night, fresh winds from the SE by Sat morning).										Days 3-6 Weather Summary Light rain (total 2mm), mostly falling on Tue morning. Warm (max 23°C on Sun morning, min 17°C on Mon night). Winds decreasing (strong winds from the ESE on Sat night, calm by Sun night).
		Thursday 06			Friday 07			Saturday 08			Sunday 09			Monday 10			Tuesday 11			Wed 12
	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM
Rating (10 max)	0	0	0	0	0	0	0	0	0	1	2	1	3	1	0	2	2	1	2	2	2
Swell Height Map See all maps
Wave Height (m) & direction (?)	SW	WSW	WSW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	WSW	WSW	WSW	WSW	WSW	WSW
Period(s) (?)	12	12	11	11	11	10	18	16	14	14	13	13	13	12	12	18	16	15	14	13	13
Wave Graph (?)
kJ (?)	597	359	265	172	140	110	108	406	736	716	778	609	543	353	473	972	1358	1776	1353	1206	1049
Wind (km/h)	SE	ESE	ESE	ESE	ESE	SE	ESE	SE	SE	ESE	ESE	SE	N	NW	WNW	NW	SSW	S	SSE	SSE	SSE
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	cross- off	cross- off	cross- off	off	cross- off	cross- off	cross- off	cross- off	cross- off	off	cross- off	cross- off	glass	cross- on	cross- on	cross- on	cross- on	cross	cross- off	cross- off	cross- off
High Tide / height (m)	3:18AM 1.59		3:30PM 1.71	4:00AM 1.56		4:14PM 1.63	4:45AM 1.50		5:00PM 1.50		5:34AM 1.40	5:52PM 1.35		6:30AM 1.29	6:52PM 1.19		7:40AM 1.20		8:13PM 1.07	9:08AM 1.16
Low Tide / height (m)	9:09PM -0.11	9:20AM 0.04		9:50PM -0.07	10:04AM 0.08		10:34PM 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 0.51	2:32AM 0.49		3:50PM 0.53

		Thursday 06			Friday 07			Saturday 08			Sunday 09			Monday 10			Tuesday 11			Wed 12
Sunrise	-	5:39	-	-	5:39	-	-	5:39	-	-	5:37	-	-	5:37	-	-	5:35	-	-	5:35	-
Sunset	-	-	7:19	-	-	7:20	-	-	7:21	-	-	7:22	-	-	7:22	-	-	7:22	-	-	7:23

Rain (mm)	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	2	-	-	-	-
Temp. °C	18	18	19	17	20	21	21	18	20	21	23	22	22	20	21	18	19	19	18	17	17
Feels °C (?)	8	9	8	4	14	13	14	12	11	14	21	18	20	18	18	16	18	16	13	12	11

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 Extensions Surf forecast

The above surf forecast table for Extensions provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Extensions can be found by selecting the local surf guide option on the grey menu. Our Extensions 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 (Extensions) 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 Extensions 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 Extensions, camping, hotels and holiday cottages in Cape Town, consider staying in Cape Town which is 45 km (28 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 51 km (32 miles) away, Grabouw, Stellenbosch and Kayamnandi.