The Dump Surf Forecast

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

Australia (828 breaks)

Surf Forecasts:

The Dump surfForecast / SA – East Coast / Australia

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

Forecast update in hr min s Forecast update imminent

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

Today's The Dump sea temperature is 14.4° C
(Which is normal for this time of year)

Best Forecast Surf Conditions for The Dump this week:

The surf forecast for The Dump over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Sep 18) at 3AM. The primary swell is predicted to be 2.1m and 12s period. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at The Dump in the next 12 days are 4.5m 14s and forecast to arrive on Saturday (Sep 20) at 9AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Friday (Sep 19) at 6AM.

Wave Type	Time (ACST) & Date	Wave Height & Period
Next good surf (1 star+)	3AM (Thu 18th Sep)	7ft (2.1m) 12s
Best Surf	6PM (Fri 19th Sep)	10ft (3.0m) 11s
Most Powerful	9AM (Sat 20th Sep)	15ft (4.5m) 14s

Table - best surf conditions forecast for The Dump over the next 12 days.

Updates in hr min s Forecast update imminent

12 Days Hourly

Print Table

	Short Range Forecast Some drizzle, heaviest during Fri afternoon. Warm (max 21°C on Thu afternoon, min 10°C on Wed night). Winds increasing (light winds from the NNW on Wed night, strong winds from the WNW by Fri afternoon).										Days 3-6 Weather Summary Mostly dry. Very mild (max 16°C on Sun morning, min 9°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)	4	1	2	3	1	0	!	0	!	!	!	0	2	0	0	!	3	0	2	0	1
Swell Height Map See all maps
Wave Height (m) & direction (?)	SSW	SSW	SSW	SW	SSW	SW	SW	SW	SSW	SSW	SSW	SSW	SSW	SSW	SSW	SSW	SSW	SW	SSW	SSW	SSW
Period(s) (?)	13	12	11	11	12	12	14	14	13	13	12	13	12	12	14	14	13	19	13	17	16
Wave Graph (?)
kJ (?)	1726	833	495	573	449	578	6307	8085	4009	2817	2327	2185	1810	2174	3785	4012	2626	5349	2049	3102	2228
Wind (km/h)	NNW	NNW	NNW	WNW	WNW	WNW	WSW	SW	W	W	W	WSW	W	SSW	SSW	W	W	SW	WSW	SW	SW
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	off	cross- off	cross- off	cross- off	cross- off	cross- off	cross	cross- on	cross	cross	cross	cross- on	cross	cross- on	on	cross	cross	cross- on	cross- on	cross- on	cross- on
High Tide / height (m)		11:51AM 1.13		12:44AM 0.62	12:10PM 1.11		12:27AM 0.69	12:28PM 1.07		12:34AM 0.78		12:44PM 1.01	12:49AM 0.88		1:00PM 0.96	1:10AM 0.97		1:15PM 0.92	1:33AM 1.04		1:29PM 0.88
Low Tide / height (m)				8:20PM 0.41	4:07AM 0.56		7:56PM 0.45	5:17AM 0.46		7:18PM 0.44	5:59AM 0.37		6:55PM 0.40	6:33AM 0.33		6:51PM 0.33	7:03AM 0.32		6:56PM 0.27	7:31AM 0.34

		Thursday 18			Friday 19			Saturday 20			Sunday 21			Monday 22			Tuesday 23			Wed 24
Sunrise	-	6:11	-	-	6:09	-	-	6:09	-	-	6:07	-	-	6:05	-	-	6:03	-	-	6:03	-
Sunset	-	-	6:07	-	-	6:07	-	-	6:08	-	-	6:09	-	-	6:09	-	-	6:10	-	-	6:12

Rain (mm)	-	-	-	-	-	1	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
Temp. °C	12	20	21	16	16	16	11	13	13	13	16	15	13	13	13	11	15	14	12	14	13
Feels °C (?)	9	13	15	13	8	8	5	7	8	9	11	10	10	7	7	8	10	8	9	10	9

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 The wind is still offshore at The Dump (light winds from the N at Mount Terrible Radar 29 km from The Dump). A 2.5m groundswell from the SSW
1 hour 20 minutes ago The Dump

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29 km away, 1 h 20 min ago

11 km/h

0.0

14.4

Air / Water (°C)

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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 The Dump 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 The Dump Surf forecast

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

The Dump is 46 km (29 miles) from Rapid Bay. If you plan a holiday in Adelaide, look for hotels and other accommodation in Rapid Bay. Rapid Bay has rooms for a wide range of budgets as well as car hire and transport links.