Surf Forecasts:
The Window surf forecast from 27 Aug 2026:
- Best quality surf: Saturday 29 Aug, 5PM (local time) - 10ft (3.0m), 17s period, SW swell with cross-offshore winds.
- Most powerful swell: Sunday 30 Aug, 5AM (local time) - 10ft (3.0m), 18s period, SW swell with 6,638 kJ wave energy.
- Next surfable swell (1★+): Saturday 29 Aug, 11AM (local time) - 6.5ft (2.0m), 16s period with SW swell.
Best Forecast Surf Conditions for The Window this week:
The surf forecast for The Window over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Aug 29) at 11AM. The primary swell is predicted to be 2.0m and 16s period with a secondary swell of 1.2m and 19s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at The Window in the next 16 days are 3.0m 18s and forecast to arrive on Sunday (Aug 30) at 5AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 5s period and expected on Friday (Aug 28) at 5PM.
| Wave Type | Time (AWST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11AM (Sat 29th Aug) | 6.5ft (2.0m) 16s |
| Best Surf | 5PM (Sat 29th Aug) | 10ft (3.0m) 17s |
| Most Powerful | 5AM (Sun 30th Aug) | 10ft (3.0m) 18s |
Table - best surf conditions forecast for The Window over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s look at what The Window has cookin’ over the next couple weeks.
We’ve got a slow start. Friday the 28th is just average with a 7ft SW swell and a 12-second period, but the cross-off wind and moderate energy (1442) just ain’t makin’ it sing. It’s there, but not worth gettin’ too excited about.
Saturday the 29th shapes up much better. The morning sees the swell drop just a touch to 7ft, but it’s from the SW and the period jumps to 16 seconds – proper groundswell – with offshore wind from the ESE. The combined energy jumps to 2992, and it’s clean. The afternoon looks like the standout though: 10ft SW swell at a very long 17-second period, light cross-off breeze, and energy crackin’ 4742. That’s a solid session for experienced surfers. The water temp is 65°, which is pretty much normal for this time of year.
Sunday the 30th still has size – 10ft – but the direction shifts to WSW and the wind goes a bit messy, especially by afternoon with a light cross-onshore (NNW). Still plenty of energy, but the quality drops.
Then we hit a rough patch. Monday the 31st through to early the following week sees the wind turnin’ onshore or cross-onshore pretty consistently, and the swell stays big but choppy. The Window is a reef, so it usually handles swell well, but with moderate to fresh onshore winds, it’s gonna be a washout for paddle surfing. From Monday the 31st right through to Saturday the 5th of September, the conditions are poor – if you’re into kite surfing, the strong cross-off wind on Saturday afternoon might look more interesting, but for a surfer, it’s a blank run.
Things start to clean up again on Sunday the 7th of September. The swell drops to 5ft, but we get a cross-off wind from the ESE and clean conditions. Energy is moderate at 1457. Monday the 8th is similar, with 5ft SW swell and clean, light winds – a nice little window of smaller, clean waves.
The end of the run is for experts only. From Wednesday the 10th through to Friday the 12th of September, the swell cranks up to 16ft to 20ft with very long periods (15-17 seconds) and massive energy values – over 20,000 on the 10th. The wind is mostly onshore or cross-onshore though, so it’s gonna be a dangerous, messy wall of water. The Window is a reef, so that long-period groundswell will stand up straight and fast – only for the brave and very experienced.
Overall, the real standout is Saturday afternoon, the 29th of August. That 10ft, 17-second SW groundswell with light cross-off wind and clean conditions is the session to aim for. It’s not a beginner’s wave – too big – but for the crew that knows what they’re doin’ at The Window, it’s gonna be special. The other decent call is the small, clean days around Sunday the 7th and Monday the 8th of September for a more relaxed paddle.
Stay safe, and pick your moments.
Rusty
Short Range ForecastMostly dry. Very mild (max 19°C on Sat afternoon, min 11°C on Fri morning). Winds decreasing (fresh winds from the SSE on Fri afternoon, calm by Sun night). | Days 4-6 Weather SummaryLight rain (total 6mm), mostly falling on Wed night. Very mild (max 18°C on Mon morning, min 13°C on Mon night). Mainly fresh winds. | ||||||||||||||||||||
Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | |||||||||||||||
AM | PM | 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) | SW 12 | SW 12 | SW 11 | SW 16 | SW 17 | SW 17 | WSW 17 | WSW 16 | WSW 16 | WSW 15 | WSW 16 | WSW 16 | WSW 15 | WSW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 |
Wave Graph | |||||||||||||||||||||
1415 | 902 | 512 | 1904 | 4742 | 5801 | 6043 | 4267 | 3417 | 1847 | 3075 | 4761 | 3079 | 2515 | 1824 | 3010 | 4092 | 4792 | 4169 | 3781 | 3122 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | off | cross-off | cross-off | cross-off | cross-on | on | cross-on | on | cross | cross-on | cross-on | on | on | on | cross-on | cross-on | on | on |
High Tide | 9:34AM0.66m | 11:21PM0.37m | 10:03AM0.60m | 11:15PM0.42m | 10:30AM0.52m | 11:17PM0.48m | 10:51AM0.43m | 11:29PM0.54m | 10:36AM0.34m | 11:51PM0.60m | 00:24AM0.64m | 1:24AM0.66m | |||||||||
Low Tide | 5:12PM0.19m | 3:12AM0.32m | 5:11PM0.23m | 4:16AM0.31m | 5:04PM0.27m | 5:23AM0.30m | 4:46PM0.30m | 6:49AM0.30m | 3:50PM0.29m | 1:45PM0.22m | 1:47PM0.13m | ||||||||||
6:43 | — | — | 6:43 | — | — | 6:41 | — | — | 6:39 | — | — | 6:39 | — | — | 6:37 | — | — | 6:35 | — | — | |
— | 5:59 | — | — | 5:59 | — | — | 6:00 | — | — | 6:00 | — | — | 6:00 | — | — | 6:01 | — | — | 6:02 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | 2 | — | — | — | — | 1 | 3 | — | — | — |
Temp °C | 13 | 17 | 13 | 16 | 19 | 16 | 18 | 18 | 17 | 18 | 18 | 14 | 14 | 14 | 14 | 15 | 16 | 16 | 14 | 14 | 16 |
Feels °C | 8 | 12 | 8 | 12 | 18 | 13 | 16 | 16 | 17 | 15 | 12 | 8 | 9 | 9 | 9 | 8 | 9 | 9 | 7 | 9 | 9 |
Swell 1 Height (m) Direction Period (s) | SW 12 | SW 12 | SW 11 | SW 16 | SW 17 | SW 17 | WSW 17 | WSW 16 | WSW 16 | WSW 15 | WSW 16 | WSW 16 | WSW 15 | WSW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 |
1415 | 902 | 512 | 1904 | 4742 | 5801 | 6043 | 4267 | 3417 | 1847 | 3075 | 4761 | 3079 | 2515 | 1824 | 3010 | 4092 | 4792 | 4169 | 3781 | 3122 | |
Swell 2 Height (m) Direction Period (s) | S 8 | SW 20 | SW 18 | SW 19 | — | — | — | — | WSW 20 | WSW 18 | — | — | — | — | — | — | — | — | — | — | — |
11 | 60 | 255 | 1088 | — | — | — | — | 407 | 1505 | — | — | — | — | — | — | — | — | — | — | — | |
Swell 3 Height (m) Direction Period (s) | SW 20 | WSW 24 | WSW 21 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
16 | 54 | 302 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | S 5 | SSE 6 | E 4 | SSE 5 | — | — | — | — | WNW 4 | W 6 | — | — | — | — | — | — | — | — | — | — |
— | 95 | 55 | 7 | 36 | — | — | — | — | 11 | 103 | — | — | — | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 3 | 8 | 3 | 0 | 0 | 3 | 2 | 21 | 15 | 213 | 363 | 3 | 15 | 15 | 55 | 260 | 2017 | 1688 | 15 | 363 | 213 |
Best forecast wave conditions in Margaret River | |||||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||||
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Information about the The Window Surf forecast
The above surf forecast table for The Window provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at The Window can be found by selecting the local surf guide option on the grey menu. Our The Window 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 Window) 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 Window 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 Window is 74 km (46 miles) from the city of Bunbury. If you plan a holiday in Margaret River, look for hotels and other accommodation in Bunbury. Bunbury has rooms for a wide range of budgets as well as car hire and transport links.











