Cunns Surf Forecast

/ SA – Nullarbor (9 breaks) / South Australia (91 breaks) /

Australia (828 breaks)

Surf Forecasts:

Cunns surfForecast / SA – Nullarbor / Australia

12 Day Weather and Surf, issued 8 pm Wednesday 17 Sep 2025 ACST

Forecast update in hr min s Forecast update imminent

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

Today's Cunns sea temperature is 15.5° C
(Which is normal for this time of year)

Best Forecast Surf Conditions for Cunns this week:

The surf forecast for Cunns over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Sep 23) at 6AM. The primary swell is predicted to be 1.8m and 14s period with a secondary swell of 0.7m and 20s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Cunns in the next 12 days are 3.0m 14s and forecast to arrive on Saturday (Sep 20) at 6AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Thursday (Sep 18) at 12AM.

Wave Type	Time (ACST) & Date	Wave Height & Period
Next good surf (1 star+)	6AM (Tue 23rd Sep)	6ft (1.8m) 14s
Best Surf	6AM (Tue 23rd Sep)	6ft (1.8m) 14s
Most Powerful	6AM (Sat 20th Sep)	10ft (3.0m) 14s

Table - best surf conditions forecast for Cunns 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 25°C on Thu morning, min 12°C on Fri night). Mainly fresh winds.										Days 3-6 Weather Summary Mostly dry. Very mild (max 15°C on Sun morning, min 12°C on Mon night). Wind will be generally light.
		Thursday 18			Friday 19			Saturday 20			Sunday 21			Monday 22			Tuesday 23			Wed 24
	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM
Rating (10 max)	2	0	0	0	0	0	1	2	2	1	0	0	1	1	1	3	3	3	4	4	1
Swell Height Map See all maps
Wave Height (m) & direction (?)	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW
Period(s) (?)	13	12	12	12	12	14	14	14	14	14	14	13	13	13	13	14	14	14	18	17	16
Wave Graph (?)
kJ (?)	633	272	379	309	520	1267	2155	1656	1507	1318	891	704	673	649	757	1121	1271	1034	871	1252	897
Wind (km/h)	ENE	N	SW	SW	W	WSW	SSW	SW	SW	WSW	SW	WSW	SSW	S	S	SSE	S	S	S	S	SSW
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	cross- off	cross- on	cross- on	cross- on	cross- on	cross- on	cross	cross	cross	cross- on	cross- on	cross- on	cross	cross- off	cross- off	cross- off	cross- off	cross- off	cross- off	cross- off	cross
High Tide / height (m)	12:54AM 0.72	11:52AM 1.10		12:21AM 0.79	11:55AM 1.17		12:12AM 0.91	12:04PM 1.21		12:16AM 1.04	12:16PM 1.24		12:27AM 1.16	12:29PM 1.24		12:41AM 1.26		12:43PM 1.22	12:56AM 1.32		12:56PM 1.18
Low Tide / height (m)		5:38AM 0.43		6:34PM 0.17	5:38AM 0.30	6:23PM 0.13		5:50AM 0.18	6:22PM 0.08		6:07AM 0.08	6:27PM 0.02		6:25AM 0.02		6:35PM -0.03	6:44AM -0.01		6:45PM -0.07	7:03AM -0.01

		Thursday 18			Friday 19			Saturday 20			Sunday 21			Monday 22			Tuesday 23			Wed 24
Sunrise	-	6:33	-	-	6:31	-	-	6:31	-	-	6:30	-	-	6:28	-	-	6:26	-	-	6:26	-
Sunset	-	-	6:30	-	-	6:30	-	-	6:31	-	-	6:32	-	-	6:32	-	-	6:34	-	-	6:35

Rain (mm)	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
Temp. °C	17	25	19	15	16	15	14	13	13	14	15	15	15	14	14	13	13	13	13	14	14
Feels °C (?)	11	19	11	13	10	8	9	9	8	10	11	11	11	9	9	9	10	9	10	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 SA - Nullarbor

Wind Update Continuing clean conditions at Cunns (light winds from the NE at Tarcoola Aero 217 km from Cunns). A 1.5m groundswell from the SW
1 hour 27 minutes ago Cunns

Expand

View all

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 Cunns 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 Cunns Surf forecast

The above surf forecast table for Cunns provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Cunns can be found by selecting the local surf guide option on the grey menu. Our Cunns 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 (Cunns) 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 Cunns 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 Nullarbor? If you are looking for accommodation near Cunns, camping, hotels and holiday cottages in Nullarbor, consider staying in Thevenard which is 64 km (40 miles) away.