
Surf Forecasts:
Dunes surf forecast from 11 Sep 2026:
- Best quality surf: Saturday 12 Sep, 11AM (local time) - 4.5ft (1.3m), 18s period, WSW swell with offshore winds.
- Most powerful swell: Saturday 12 Sep, 8PM (local time) - 5.5ft (1.7m), 16s period, WSW swell with 1,487 kJ wave energy.
- Next surfable swell (1★+): Saturday 12 Sep, 11AM (local time) - 4.5ft (1.3m), 18s period with WSW 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 Saturday (Sep 12) at 11AM. The primary swell is predicted to be 1.3m and 18s period with a secondary swell of 0.9m and 14s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Dunes in the next 16 days are 1.7m 16s and forecast to arrive on Saturday (Sep 12) at 8PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 4s period and expected on Friday (Sep 18) at 8AM.
| Wave Type | Time (AWST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11AM (Sat 12th Sep) | 4.5ft (1.3m) 18s |
| Best Surf | 11AM (Sat 12th Sep) | 4.5ft (1.3m) 18s |
| Most Powerful | 8PM (Sat 12th Sep) | 5.5ft (1.7m) 16s |
Table - best surf conditions forecast for Dunes over the next 16 days.
The Lowdown
Alright, surfers, ol’ Rusty here. Let’s cut through the noise and get straight to it. We’ve got a mixed bag of a forecast coming up for Dunes, so let’s see where the windows are.
The overall pattern is all about mornings. The afternoons are almost universally gonna be blown out by the westerly seabreeze, chopping up what could be decent waves. The real magic happens in those early hours when it’s clean and lined up. We’ll see a little pulse of energy mid-period, but the standout windows are clear if you’re willing to get up early.
We’re looking at the first real window Saturday morning, September 12th. We’ve got a solid 4ft of WSW swell gliding in with a long 18-second period. The wind is gentle offshore, making for clean conditions. Combined energy is at a strong 1401, so there’s some push behind it. This is your best early bet.
There’s a bit of a lull through the middle of the week. The mornings remain cleanest but the swell backs off into that 3ft range, with a shorter 13-second period. You’ll still find some fun ones, especially with that glassy spell Friday morning, September 18th, and the offshore winds on Wednesday the 16th, but the size is down.
Now, the big one to circle on your calendar is Saturday, September 19th. A solid 6ft to 8ft SW groundswell rolls in with a 16-second period. The early morning is still holding at 6ft but is cross-shore, which would be fine if it cleans up. But the afternoon is the biggest, hitting 8ft with crazy energy at 3322. However, the wind is fresh cross-shore and lumpy, and honestly, this is a big day for Dunes. It’s pushing past the beginner zone and getting into expert territory. The morning looks more manageable, but it’s going to be powerful.
Before that, the Sunday the 20th morning looks very good, with the wind dropping to glass and a solid 5ft swell keeping things fat and clean. That’s a strong pick too. The following Tuesday morning the 22nd also sees glassy conditions and a clean 4ft, making it a worthwhile dawn patrol.
After that, the forecast fades. The last week is looking weak and small, with dropping energy and mostly onshore winds. There's not much to get excited about from the 23rd to the 26th, just small, messier surf. That Saturday the 26th has some size (4ft to 5ft), but it's crossed up and onshore, so it’ll be a scrap.
The water temp is sitting about normal for this time of year at around 74°, so it’s comfortable. And keep in mind, Dunes is a consistent reef break, so when it's on, it's on. But those with a crowd will be there, so the early sessions are your best friend.
My pick for the best on offer? It’s a tie between the clean Saturday morning the 12th and that glassy, solid Sunday morning the 20th. The Saturday has the longer period and cleaner wind, making it the standout for quality. The Sunday has that near-glassy perfection. Both are winners.
So, mark your alarms, get the dawn patrol in, because the afternoons are a write-off. This is Rusty, signing off.
Short Range ForecastMostly dry. Warm (max 23°C on Sun afternoon, min 19°C on Mon morning). Winds increasing (calm on Sat afternoon, fresh winds from the SW by Mon afternoon). | Days 5-7 Weather SummaryMostly dry. Warm (max 25°C on Thu afternoon, min 19°C on Mon night). Winds decreasing (fresh winds from the SSW on Tue night, light winds from the SE by Thu morning). | ||||||||||||||||||
Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | ||||||||||||||
Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map | |||||||||||||||||||
Wave Height (m) Direction Period (s) | WSW 19 | WSW 18 | WSW 17 | WSW 16 | WSW 15 | WSW 15 | WSW 14 | SW 14 | WSW 15 | WSW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | WSW 14 |
Wave Graph | |||||||||||||||||||
584 | 1093 | 1134 | 1199 | 897 | 763 | 774 | 857 | 818 | 682 | 754 | 731 | 799 | 621 | 548 | 418 | 352 | 172 | 257 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | cross-on | cross-off | cross | cross | cross-off | cross-off | cross | cross-off | cross-off | cross | cross-off | cross-off | cross-on | cross-off | off | cross-on | cross |
High Tide | 11:57PM1.83m | 12:10PM1.93m | 00:25AM1.94m | 12:44PM1.91m | 00:52AM2.00m | 1:15PM1.84m | 1:17AM2.02m | 1:43PM1.73m | 1:41AM1.99m | 2:09PM1.60m | 2:03AM1.94m | 2:33PM1.47m | 2:24AM1.86m | ||||||
Low Tide | 5:58AM0.27m | 6:15PM0.24m | 6:33AM0.17m | 6:42PM0.27m | 7:05AM0.14m | 7:06PM0.32m | 7:36AM0.17m | 7:27PM0.41m | 8:05AM0.24m | 7:45PM0.50m | 8:32AM0.34m | 8:00PM0.59m | |||||||
— | 6:22 | — | — | 6:22 | — | — | 6:20 | — | — | 6:20 | — | — | 6:18 | — | — | 6:18 | — | — | |
6:15 | — | 6:15 | — | — | 6:15 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 22 | 21 | 22 | 21 | 21 | 23 | 21 | 21 | 22 | 20 | 21 | 22 | 21 | 21 | 22 | 21 | 23 | 25 | 22 |
Feels °C | 20 | 19 | 21 | 18 | 20 | 19 | 17 | 20 | 18 | 16 | 19 | 19 | 17 | 21 | 20 | 18 | 23 | 24 | 19 |
Swell 1 Height (m) Direction Period (s) | WSW 14 | WSW 18 | WSW 17 | WSW 16 | WSW 15 | WSW 15 | WSW 14 | SW 14 | WSW 15 | WSW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | WSW 14 |
367 | 1093 | 1134 | 1199 | 897 | 763 | 774 | 857 | 818 | 682 | 754 | 731 | 799 | 621 | 548 | 418 | 352 | 172 | 257 | |
Swell 2 Height (m) Direction Period (s) | WSW 19 | SW 14 | WSW 13 | — | — | — | N 8 | NE 7 | NE 6 | NE 6 | W 5 | N 7 | SW 19 | WSW 18 | N 8 | N 7 | WSW 16 | WSW 16 | SW 20 |
584 | 308 | 277 | — | — | — | 1 | 2 | 2 | 1 | 2 | 1 | 15 | 31 | 1 | 1 | 26 | 99 | 16 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | N 6 | — | — | — | — | — | W 16 | W 22 | — |
— | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | 5 | 9 | — | |
Wind waves Height (m) Direction Period (s) | SW 3 | SSE 3 | — | SSW 4 | SSW 3 | SW 3 | SSW 4 | S 4 | SW 4 | SW 6 | S 4 | SW 4 | SSW 4 | — | WSW 3 | SW 3 | S 3 | SW 4 | SSW 5 |
2 | 3 | — | 5 | 3 | 7 | 12 | 6 | 25 | 56 | 7 | 27 | 11 | — | 1 | 5 | 2 | 11 | 19 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 1397 | 1444 | 0 | 777 | 659 | 0 | 1446 | 660 | 1091 | 1128 | 1144 | 659 | 1130 | 493 | 0 | 733 | 15 | 0 | 1344 |
Best forecast wave conditions in North West WA | |||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||
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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.










