Cape Northumberland Surf Forecast

/ SA – East Coast (28 breaks) / South Australia (91 breaks) /

Australia (828 breaks)

Surf Forecasts

Cape Northumberland surfForecast / SA – East Coast / Australia

48hr Weather and Surf, issued 8 am Wednesday 13 Aug 2025 ACST

Forecast update in hr min s Forecast update imminent

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

Today's Cape Northumberland sea temperature is 14.8° C
(Which is 1.1°C warmer than normal for this time of year)

How big are the waves at Cape Northumberland today?

The current surf forecast for Cape Northumberland at 12PM is: 2.3m 14s primary swell from a Southwest direction (forecast issued at 08:30am August 13). The wind direction is predicted to be onshore.

Time (ACST) & Date	Wave Height	Wave Period
Morning (13 Aug)	7ft (2.2m)	14s
Afternoon (13 Aug)	7.5ft (2.3m)	13s
Evening (13 Aug)	7ft (2.2m)	13s

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

Hourly 12 Days

South Australia – East Coast Surf

Print Surf Table

Updates in hr min s Forecast update imminent

	Wednesday 13						Thursday 14								Friday 15								Sat 16
	6 AM	9 AM	12 PM	3 PM	6 PM	9 PM	0 AM	3 AM	6 AM	9 AM	12 PM	3 PM	6 PM	9 PM	0 AM	3 AM	6 AM	9 AM	12 PM	3 PM	6 PM	9 PM	0 AM	3 AM
Rating (10 max)	3	3	2	2	3	3	3	4	3	3	2	2	1	0	0	0	0	0	0	0	0	0	0	0
Swell Height Map See all maps
Wave Height (m) & direction (?)	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	WSW	SW	SW	SW	NW	W	W	WSW	WSW	WSW	WSW	WSW	WSW
Period(s) (?)	13	14	14	13	13	13	13	12	13	12	12	12	12	12	12	8	12	12	11	11	12	13	13	13
Wave Graph (?)
Energy (?)	1491	2004	1894	1811	1659	1527	1348	1327	1348	1225	1026	1085	778	685	718	950	3629	2324	2612	2715	3567	5063	5751	9095
Wind (km/h)	WSW	WSW	WSW	WSW	W	NNW	NNW	N	N	N	N	N	N	N	N	NNW	NW	W	W	W	WSW	WSW	WSW	SW
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	on	on	on	on	on	cross	cross	cross- off	cross- off	cross- off	cross- off	cross- off	cross- off	cross- off	cross- off	cross	cross- on	on	on	on	on	on	on	on
High Tide / height (m)				2:31PM 0.95				2:34AM 0.88				2:35PM 0.87				3:09AM 0.90				2:31PM 0.80
Low Tide / height (m)		8:07AM 0.30				8:39PM 0.38				8:38AM 0.37				8:46PM 0.31				9:05AM 0.46				8:58PM 0.24

	Wednesday 13						Thursday 14								Friday 15								Sat 16
Sunrise	-	6:56	-	-	-	-	-	-	-	6:54	-	-	-	-	-	-	-	6:52	-	-	-	-	-	-
Sunset	-	-	-	5:29	-	-	-	-	-	-	-	5:29	-	-	-	-	-	-	-	5:30	-	-	-	-

Rain (mm)	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	4	3	-	1	-	1	1	1
Temp. °C	11	11	12	13	13	12	12	11	10	9	14	15	15	15	15	15	11	13	12	10	11	10	10	10
Feels °C (?)	9	8	9	10	11	10	10	8	6	4	8	9	8	6	5	5	5	5	2	-1	0	0	1	1

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 SA - East Coast

Wind Update Recent on-shore wind 36 km from Cape Northumberland has fallen light (calm at MountGambierAero). Waves cleaning up. 2.3m 13s groundswell from the SW with a 1.1m 13s groundswell from the WSW. 2 swells combining so expect closeout sets.
1 hour 23 minutes ago Cape Northumberland
Wind Update Cross-on wind has become light (calm at Mount Terrible Radar 27 km from Bullies). A 1.6m groundswell from the SW
1 hour 23 minutes ago Bullies

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36 km away, 1 h 23 min ago

4 km/h

ESE

0.0

14.8

Air / Water (°C)

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