Gansbaai Surf Forecast

/ Overberg (23 surf breaks) /

South Africa (273 surf breaks)

Surf Forecasts:

Gansbaai surfForecast / Overberg / South Africa

12 Day Weather and Surf, issued 7 pm Thursday 18 Sep 2025 SAST

Forecast update in hr min s Forecast update imminent

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

Today's Gansbaai sea temperature is 16.1° C
(Which is normal for this time of year)

Best Forecast Surf Conditions for Gansbaai this week:

The surf forecast for Gansbaai over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Sep 18) at 11PM. The primary swell is predicted to be 2.1m and 12s period with a secondary swell of 0.7m and 10s. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Gansbaai in the next 12 days are 2.5m 14s and forecast to arrive on Wednesday (Sep 24) at 8AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.7m 6s period and expected on Friday (Sep 19) at 5PM.

Wave Type	Time (SAST) & Date	Wave Height & Period
Next good surf (1 star+)	11PM (Thu 18th Sep)	7ft (2.1m) 12s
Best Surf	11PM (Thu 18th Sep)	7ft (2.1m) 12s
Most Powerful	8AM (Wed 24th Sep)	8ft (2.5m) 14s

Table - best surf conditions forecast for Gansbaai 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 11°C on Thu night). Mainly fresh winds.										Days 3-6 Weather Summary Light rain (total 7mm), mostly falling on Sun night. Very mild (max 16°C on Wed morning, min 11°C on Mon night). Wind will be generally light.
		Friday 19			Saturday 20			Sunday 21			Monday 22			Tuesday 23			Wednesday 24			Thu 25
	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM
Rating (10 max)	3	2	1	2	0	0	2	1	0	0	0	0	1	0	0	2	3	2	4	3	1
Swell Height Map See all maps
Wave Height (m) & direction (?)	S	S	S	SSE	SSE	SSE	SSE	SSE	SSE	SSE	S	SW	SW	WSW	WSW	WSW	SW	SW	SW	SW	SW
Period(s) (?)	12	12	11	12	13	13	12	12	12	11	11	13	12	12	11	11	14	13	13	12	12
Wave Graph (?)
kJ (?)	1103	425	302	398	447	447	333	218	196	107	184	106	122	247	387	387	2256	2140	1408	1048	869
Wind (km/h)	ENE	E	ESE	NE	W	W	NE	E	SSE	WNW	WSW	SSW	NE	W	WSW	SSE	SE	SSE	E	SE	SE
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	off	off	off	cross- off	on	on	cross- off	off	cross- off	on	cross- on	cross- on	cross- off	on	cross- on	cross- off	cross- off	cross- off	off	cross- off	cross- off
High Tide / height (m)	1:50AM 1.38		2:08PM 1.51	2:23AM 1.45		2:38PM 1.59	2:53AM 1.50		3:06PM 1.64	3:21AM 1.53		3:33PM 1.65	3:49AM 1.52		3:59PM 1.63	4:15AM 1.49		4:25PM 1.57	4:42AM 1.43		4:51PM 1.49
Low Tide / height (m)		8:00AM 0.23		8:25PM 0.20	8:30AM 0.16		8:55PM 0.13	8:59AM 0.12		9:22PM 0.09	9:25AM 0.12		9:48PM 0.09	9:51AM 0.13		10:14PM 0.11	10:16AM 0.18		10:38PM 0.16	10:41AM 0.25

		Friday 19			Saturday 20			Sunday 21			Monday 22			Tuesday 23			Wednesday 24			Thu 25
Sunrise	-	6:37	-	-	6:35	-	-	6:33	-	-	6:33	-	-	6:31	-	-	6:30	-	-	6:28	-
Sunset	-	-	6:36	-	-	6:37	-	-	6:37	-	-	6:37	-	-	6:38	-	-	6:39	-	-	6:39

Rain (mm)	-	-	-	-	-	-	-	-	-	5	1	-	-	-	-	1	-	-	-	-	-
Temp. °C	13	16	21	17	17	17	15	16	17	15	15	15	14	14	15	15	16	16	13	15	16
Feels °C (?)	10	10	15	15	12	11	13	14	14	13	11	12	12	12	11	10	11	9	9	11	10

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

Recent Eyeball Surf Reports for Overberg

Wind Update Continuing clean conditions at Gansbaai (calm at Hermanus 21 km from Gansbaai). A 2.3m groundswell from the SSW
2 hours 3 minutes ago Gansbaai

Expand

View all

21 km away, 2 h 3 min ago

4 km/h

0.0

16.1

Air / Water (°C)

Please reload the page to see if there are any updates.

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 Gansbaai 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.

Information about the Gansbaai Surf forecast

The above surf forecast table for Gansbaai provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Gansbaai can be found by selecting the local surf guide option on the grey menu. Our Gansbaai 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 (Gansbaai) 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 Gansbaai 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.

Gansbaai is 21 km (13 miles) from Hermanus. If you plan a holiday in Overberg, look for hotels and other accommodation in Hermanus. Hermanus has rooms for a wide range of budgets as well as car hire and transport links.