Dunes Surf Break

Lat Long: 21.80° S 114.14° E

Dunes Surf Forecast and Surf Report

Issued: 1 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, 11AM (local time) - 4.5ft (1.4m), 16s period, SW swell with cross-offshore winds.
  • Most powerful swell: Thursday 27 Aug, 8AM (local time) - 6ft (1.9m), 17s period, WSW swell with 2,041 kJ wave energy.
  • Next surfable swell (1★+): Friday 21 Aug, 11AM (local time) - 4.5ft (1.4m), 16s 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 11AM. The primary swell is predicted to be 1.4m and 16s period. The wind is predicted to be cross-offshore 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 8AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 5s period and expected on Friday (Aug 28) at 8AM.

Wave TypeTime (AWST) & Date Wave Height & Period
Next good surf (1 star+)11AM (Fri 21st Aug)4.5ft (1.4m) 16s
Best Surf11AM (Fri 21st Aug)4.5ft (1.4m) 16s
Most Powerful 8AM (Thu 27th Aug)6ft (1.9m) 17s

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


The Lowdown

Alright folks, Rusty here. Let’s break it down.

We’ve got a solid run of surf at Dunes. It’s not a perfect start, but the first week has some real highlights, especially for those who like a long-period groundswell and clean conditions. Water temp is sitting at 74°, which is pretty normal for this time of year, so the wetsuit call is an easy one.

Friday, August 21st kicks things off with a nice morning session. Waves are 5ft from the SW with a very long period of 16 seconds, and the wind is a light cross-offshore from the ESE. That’s a recipe for clean, lined-up sets. The energy is moderate (894), but that long period is going to make for some proper groundswell walls. This is a good one for the early bird.

Saturday, August 22nd and Sunday, August 23rd are a bit of a letdown. The swell drops to 4ft - 3ft, and the wind is all over the place, mostly cross or cross-onshore. It’s surfable, but it’s going to be a bit messy and weak. The cross-off winds on Sunday afternoon keep it clean, but the swell is really small.

Monday, August 24th is where the quality comes back. Morning sees a 3ft SW swell, but the wind is offshore from the SE. That moderate offshore breeze is going to hold the waves up perfectly, making for glassy, clean lines. The period is a very long 16 seconds. This is a great window for anyone who wants empty, clean waves.

Tuesday, August 25th through Wednesday, August 26th is a holding pattern. We’ve got consistent 4ft swell, but the wind is a mix of cross-off and cross-onshore. The morning sessions on Tuesday see a clean offshore wind again, so there’s some fun to be had, but it’s not the standout.

Now, Thursday, August 27th is a big moment. The swell jumps up to 6ft from the SW with a period of 16 seconds, and the energy ramps up to strong (1741). The morning is a full-on offshore from the SSE at 22 mph. That’s going to blow the tops off perfectly. This is getting into the intermediate-to-expert zone, but for those guys, it’s going to be a proper session. Thursday afternoon is still solid with a cross-off wind.

Friday, August 28th sees a drop back to 5ft, but the morning offshore wind from the ESE keeps it clean and fun.

Saturday, August 29th and Sunday, August 30th are a bit of a write-off. The swell is tiny (2ft - 3ft) and the wind is strong and cross-off, making it more of a wind-swell situation than a surfable wave. There’s a real gap in quality here.

Monday, August 31st is interesting. The afternoon shows a 6ft WSW swell with a very long period of 19 seconds and a massive energy spike (1990). The wind is glassy, almost nothing from the NNW. This is a very long-period groundswell, so it’s going to be for the reefs and points, not the beachbreak. It’s a bit of a wildcard, but it could be epic if it hits the right bank.

Tuesday, September 1st is the absolute standout of the whole outlook. The morning has a 6ft WSW swell, a period of 17 seconds, the energy is very strong (2048), and the wind is a clean offshore from the SSE. This is serious, proper groundswell. The wave comment suggests it’s for experienced surfers, and they’re right – 6ft with that much energy is a beast. If you’re confident, this is the day to circle.

Wednesday, September 2nd keeps the energy high with a 7ft swell from the WSW, but the wind is a cross-offshore, so it’s a bit less clean than Tuesday. Still a solid day for those who don’t mind a bit of texture.

Thursday, September 3rd and Friday, September 4th see the swell drop back to 5ft and 3ft, with mostly offshore or cross-off winds. It’s a return to fun, manageable sizes.

Saturday, September 5th closes out the period with a 5ft SW swell and a cross-off wind. The energy is moderate (1115), so it’s a solid finisher, but nothing compared to the first few days of September.

To sum it up: Monday, August 24th for the clean, glassy morning session, and Tuesday, September 1st for the big, powerful swell – that’s the one for the experts.

Rusty.

Short Range Forecast

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

Days 4-6 Weather Summary

Mostly dry. Warm (max 23°C on Mon afternoon, min 18°C on Mon morning). Winds decreasing (fresh winds from the SSW on Mon night, light winds from the WNW 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
1
2
1
1
1
1
0
3
0
1
2
0
1
2
1
2
2
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
1.3
WSW
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
1.1
SW
15
1.1
SW
15
1.8
SW
18
1.8
SW
16
1.8
SW
16
1.7
WSW
15
Wave Graph
Metric surfscale
Energy kJ
894
760
631
606
514
500
519
395
241
371
675
589
406
394
212
537
496
1952
1714
1611
1288
Wind (km/h)
15
ESE
15
W
10
WSW
10
WSW
20
WSW
30
SSW
25
S
25
S
35
S
20
SE
25
SW
35
S
20
SE
15
N
15
SW
20
S
25
SW
30
S
35
SSE
20
SSW
45
SSE
Wind State
cross-off
cross-on
cross-on
cross-on
cross
cross-off
cross-off
cross-off
cross-off
off
cross
cross-off
off
cross-on
cross
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
part cloud
part cloud
part cloud
clear
part cloud
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
24
24
23
23
21
20
24
21
19
23
22
21
23
22
20
22
21
19
24
24
Feels °C
22
23
23
25
22
19
16
20
15
16
18
16
17
22
22
17
19
16
12
19
17
  • 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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