Arniston Surf Forecast

/ Overberg (23 surf breaks) /

South Africa (273 surf breaks)

Surf Forecasts:

Arniston surfForecast / Overberg / South Africa

48hr Weather and Surf, issued 7 pm Wednesday 17 Sep 2025 SAST

Forecast update in hr min s Forecast update imminent

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

Today's Arniston sea temperature is 16.8° C
(Which is slightly warmer than usual)

How big are the waves at Arniston today?

The current surf forecast for Arniston at 1AM is: 2.2m 12s primary swell from a South direction and 0.5m 15s secondary swell from a South direction (forecast issued at 07:00pm September 17). The wind direction is predicted to be offshore and the swell rating is 11.

Time (SAST) & Date	Wave Height	Wave Period
Morning (18 Sep)	6ft (1.9m)	11s
Afternoon (18 Sep)	6ft (1.8m)	11s
Evening (18 Sep)	6ft (1.9m)	11s

Table - waves today at Arniston. (Swell directed towards the surf break)

Updates in hr min s Forecast update imminent

12 Days Hourly

Print Table

	Wednesday 17			Thursday 18								Friday 19								Saturday 20
	5 PM	8 PM	11 PM	2 AM	5 AM	8 AM	11 AM	2 PM	5 PM	8 PM	11 PM	2 AM	5 AM	8 AM	11 AM	2 PM	5 PM	8 PM	11 PM	2 AM	5 AM	8 AM	11 AM	2 PM
Rating (10 max)	!	!	!	!	!	4	4	2	1	2	1	1	0	0	0	0	0	0	0	0	!	!	3	0
Swell Height Map See all maps
Wave Height (m) & direction (?)	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	SSE	S	E	ESE	ESE	ESE	ESE
Period(s) (?)	12	12	12	12	12	11	11	11	11	11	12	12	12	12	11	11	11	13	13	8	9	9	9	9
Wave Graph (?)
kJ (?)	2154	1806	1638	1355	1166	986	792	785	966	1001	952	986	885	776	652	459	319	431	483	634	803	724	617	488
Wind (km/h)	SW	SW	WNW	NW	WNW	NW	WSW	SSW	S	SE	E	ENE	ENE	ENE	E	E	E	E	ENE	ENE	N	WNW	WSW	WSW
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	cross- off	cross- off	off	off	off	off	cross- off	cross	cross	on	cross- on	cross- on	cross- on	cross- on	cross- on	on	on	cross- on	cross- on	cross- on	cross- off	off	cross- off	cross- off
High Tide / height (m)				1:12AM 1.52				1:36PM 1.67				1:50AM 1.65					2:08PM 1.80				2:21AM 1.74
Low Tide / height (m)		7:16PM 0.49				7:29AM 0.37				7:54PM 0.34					8:02AM 0.25				8:26PM 0.22				8:31AM 0.17

	Wednesday 17			Thursday 18								Friday 19								Saturday 20
Sunrise	-	-	-	-	-	6:35	-	-	-	-	-	-	-	6:33	-	-	-	-	-	-	-	6:31	-	-
Sunset	6:30	-	-	-	-	-	-	-	6:31	-	-	-	-	-	-	-	6:31	-	-	-	-	-	-	-

Rain (mm)	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
Temp. °C	15	14	13	12	13	13	15	15	15	14	14	14	13	14	15	16	16	16	16	16	15	16	20	20
Feels °C (?)	9	10	10	9	10	10	11	10	11	11	11	11	9	9	9	9	9	10	12	13	15	14	15	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 The wind is still cross-off at Arniston (light winds from the SW at Struisbaai 20 km from Arniston). A 3.0m groundswell from the S is too big for here
1 hour 17 minutes ago Arniston

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20 km away, 1 h 17 min ago

15 km/h

0.0

16.8

Air / Water (°C)

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