Dunes Surf Break

Lat Long: 21.80° S 114.14° E

Dunes Surf Forecast and Surf Report

Issued: 7 am 21 Aug 2026 (local time)

Forecast update in  hr  min

Today's Dunes sea temperature is
23.5° C
0.6° 

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


Dunes surf forecast from 21 Aug 2026:

  • Best quality surf: Friday 21 Aug, 11PM (local time) - 4ft (1.2m), 15s period, SW swell with glassy winds.
  • Most powerful swell: Thursday 27 Aug, 5AM (local time) - 6ft (1.9m), 17s period, SW swell with 2,238 kJ wave energy.
  • Next surfable swell (1★+): Friday 21 Aug, 11PM (local time) - 4ft (1.2m), 15s period with SW swell.

Best Forecast Surf Conditions for Dunes this week:

The surf forecast for Dunes over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Aug 21) at 11PM. The primary swell is predicted to be 1.2m and 15s period. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Dunes in the next 16 days are 1.9m 17s and forecast to arrive on Thursday (Aug 27) at 5AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 5s period and expected on Sunday (Aug 23) at 11PM.

Wave TypeTime (AWST) & Date Wave Height & Period
Next good surf (1 star+)11PM (Fri 21st Aug)4ft (1.2m) 15s
Best Surf11PM (Fri 21st Aug)4ft (1.2m) 15s
Most Powerful 5AM (Thu 27th Aug)6ft (1.9m) 17s

Table - best surf conditions forecast for Dunes over the next 16 days.


The Lowdown

Alright, Rusty here, and I’ve got the lowdown on Dunes for the next couple of weeks.

First up, a quick note on the water. It’s sitting at 74°, which is pretty much spot on for this time of year – nothing to get excited about, just normal.

The early part of the forecast is a bit of a mixed bag, but there are some real gems to chase. The overall pattern starts with a solid, long-period groundswell from the SW that’s packing moderate energy (898), and it cleans right up to start. Friday morning, the 21st of August, is calling your name. We’ve got glassy conditions with a light 3 mph wind, and 5 ft of SW swell with a 16-second period. That’s proper groundswell, and it’s going to be clean. The energy is moderate (898), and it’s a reef break, so that long period will wrap in nicely. This is a standout.

The weekend looks a bit touch and go. Saturday morning the 22nd has glassy conditions again and a clean 4 ft SW swell, but the energy is dropping (671). Still a good session if you’re keen. Saturday afternoon goes a bit ugly with a cross-onshore wind that’ll chop it up. Sunday the 23rd sees a clean cross-offshore wind, but the swell is dropping to 4 ft and the energy is fading (524). It’s light, but maybe worth a paddle if you’re desperate.

Monday the 24th morning is a real highlight. We’ve got a clean offshore wind from the SE, a tidy 3 ft SW swell, and a long period of 16 seconds. The energy is moderate (542). This is another one to circle.

Tuesday the 25th morning stays clean with offshore winds and 4 ft swell, but the period drops to 13 seconds, and the energy is a bit weaker (416). It’s still good, just not as punchy.

From Wednesday the 26th through to the end of the month, the surf gets a bit messy, with a lot of cross-offshore and cross-onshore winds hitting the windows. There’s a big spike of energy on the 27th of August (Thursday morning) with a 6 ft WSW swell and a 17-second period, and the energy is strong (1924). The wind is offshore, so it’ll be clean. But that’s a decent size for Dunes, and the period is very long, so it might be a bit too much for the less experienced. It’s for the confident crew.

The real monster shows up on the 1st of September (Tuesday). We’re looking at a 7 ft WSW swell with an 18-second period and very strong energy (2654). The morning has cross-offshore winds, but honestly, this is going to be too big for Dunes. It’s only for experts, and even then, it might be a handful.

The best bet in the second week is Wednesday the 2nd of September morning. The swell drops to 7 ft, still big, but the wind is offshore and light, and the energy is still strong (1809). The period is 15 seconds. This is excellent for experienced surfers and is the standout of the second week.

Thursday the 3rd and Friday the 4th see the swell dropping, but the winds are strong and offshore. It’ll be clean, but the energy is dropping off. Saturday the 5th of September morning brings back a clean 5 ft SW swell with moderate energy (956) and offshore winds – a solid finish to the run.

So, to sum it up, the best of the best is Friday morning the 21st of August with that glassy, long-period 5 ft SW swell. The other big one to plan for is Wednesday morning the 2nd of September for the experienced crew. Keep an eye on the 27th of August too, if you’re confident.

Stay salty,
Rusty

Short Range Forecast

Mostly dry. Warm (max 24°C on Sun afternoon, min 18°C on Sun morning). Winds increasing (calm on Fri morning, strong winds from the SSW by Sun night).

Days 4-6 Weather Summary

Mostly dry. Warm (max 24°C on Mon afternoon, min 18°C on Mon morning). Winds decreasing (fresh winds from the SSW on Mon night, light winds from the NW by Tue night).

Friday
21
Saturday
22
Sunday
23
Monday
24
Tuesday
25
Wednesday
26
Thursday
27
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
3
1
2
3
0
1
1
0
0
3
0
1
2
0
1
2
1
2
3
3
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.4
SW
16
1.4
SW
15
1.2
SW
15
1.2
SW
14
1.1
SW
14
1.1
SW
14
1.1
SW
15
0.9
SW
15
0.8
SW
14
0.9
SW
16
1.2
SW
15
1.2
SW
14
1.1
SW
13
1.1
SW
13
0.9
SW
12
1
SW
15
1.1
SW
14
1.8
SW
18
1.9
WSW
17
1.8
SW
16
1.5
WSW
16
Wave Graph
Metric surfscale
Energy kJ
894
827
631
606
514
500
519
395
241
371
666
589
406
394
216
424
443
1952
1924
1631
1112
Wind (km/h)
5
SW
10
WSW
5
W
5
W
20
WSW
30
SSW
30
SSE
25
SSW
35
S
25
SE
25
SW
35
SSE
20
SE
15
N
20
S
10
S
25
WSW
25
S
35
SSE
20
SSW
40
SSE
Wind State
glassy
cross-on
cross-on
glassy
cross-on
cross-off
cross-off
cross-off
cross-off
off
cross
cross-off
off
cross-on
cross-off
cross-off
cross
cross-off
off
cross-off
off
High Tide
3:54PM1.15m
4:02AM1.62m
4:34PM1.01m
4:44AM1.52m
6:09AM1.41m
11:42PM1.13m
8:41AM1.42m
11:16PM1.26m
10:00AM1.54m
11:27PM1.40m
10:47AM1.66m
11:45PM1.54m
Low Tide
10:20AM0.65m
9:01PM0.73m
11:21AM0.75m
9:00PM0.84m
1:32PM0.79m
3:31PM0.69m
2:15AM1.11m
4:20PM0.56m
3:57AM0.97m
4:53PM0.43m
4:43AM0.80m
5:23PM0.33m
cloud
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:43
6:41
6:41
6:39
6:39
6:39
6:37
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:09
6:09
6:10
6:10
6:10
6:12
6:12
 mm
Temp °C
23
23
23
23
23
22
20
24
21
19
24
22
21
23
23
20
22
21
20
25
25
Feels °C
25
24
24
26
23
21
15
20
15
14
19
15
17
21
24
18
19
18
14
21
19
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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Information about the Dunes Surf forecast

The above surf forecast table for Dunes provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Dunes can be found by selecting the local surf guide option on the grey menu. Our Dunes 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 (Dunes) 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 Dunes 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 North West WA? If you are looking for accommodation near Dunes, camping, hotels and holiday cottages in North West WA, consider staying in Exmouth which is 15 km (9 miles) away.

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