
Surf Forecasts:
The Window surf forecast from 7 Sep 2026:
- Best quality surf: Tuesday 8 Sep, 11AM (local time) - 13ft (4.0m), 16s period, SW swell with offshore winds.
- Most powerful swell: Tuesday 8 Sep, 11AM (local time) - 13ft (4.0m), 16s period, SW swell with 8,050 kJ wave energy.
- Next surfable swell (1★+): Tuesday 8 Sep, 11AM (local time) - 13ft (4.0m), 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 Tuesday (Sep 08) at 11AM. The primary swell is predicted to be 4.0m and 16s period. 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 4.0m 16s and forecast to arrive on Tuesday (Sep 08) at 11AM. 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 6s period and expected on Tuesday (Sep 08) at 5PM.
| Wave Type | Time (AWST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11AM (Tue 8th Sep) | 13ft (4.0m) 16s |
| Best Surf | 11AM (Tue 8th Sep) | 13ft (4.0m) 16s |
| Most Powerful | 11AM (Tue 8th Sep) | 13ft (4.0m) 16s |
Table - best surf conditions forecast for The Window over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what The Window’s got cooking for us over the next couple of weeks.
Right off the bat, we’re looking at a solid, powerful SW groundswell rolling in. The water temp is sitting at 65°, which is pretty normal for this time of year, so no surprises there. The first few days are the real deal—this is big, powerful stuff, not for the faint of heart.
Monday morning the 7th sees a clean, 12 ft SW swell with a 16-second period. The energy is huge, clocking in at 6018 (moderate wave energy). The wind is a cross-off from the SE at 6 mph, keeping things clean. This is excellent surf, but at this size and with the crowd factor, you’ve gotta be on your game. That level of swell is only for experienced surfers.
Tuesday morning the 8th is the standout. The swell ticks up to 13 ft from the SW, with that same long 16-second period, and the energy rockets up to 8050 (moderate wave energy). The wind goes offshore from the ESE at 12 mph. This is the best session of the whole outlook—big, clean, powerful. If you’ve got the skills and you’re out there early, this is the one. The rating and score both back this up as the top pick.
Wednesday morning the 9th steps down a little but still has size. 10 ft from the WSW, period at 15 seconds, energy at 3750 (moderate wave energy). The wind swings cross-off from the ENE at 19 mph though, which is on the stronger side and makes it a bit more tricky. The afternoon cleans up with a gentler offshore breeze, making it a better window for experienced guys.
Thursday afternoon the 10th is a dark horse. The swell drops to 7 ft, but the period stays at a juicy 15 seconds. The wind goes glassy from the north at just 3 mph. Energy is still decent at 1937 (moderate wave energy). For a late-afternoon session, that’s a magic window for the crew that knows what they’re doing.
After that, things start to get messy. Friday the 11th has a long-period 19-second pulse, which is a proper groundswell, but the wind swings cross-on and it gets choppy. Honestly, not worth it.
Then we hit a big gap. From Saturday the 12th right through to Sunday the 20th, the wind is onshore, cross-on, or howling. Swell size stays up, often between 8 ft and 13 ft, but the wind just ruins it. There are a few glassy moments early on the 14th and 15th, with clean 10 ft+ surf and light wind, but the quality flags are low. You could chance it, but the wind state is often described as poor or marginal.
The biggest red flag is Thursday the 17th afternoon. We get a massive 16 ft SW swell with a 16-second period and energy readings of 11102 (very strong wave energy). That's a serious amount of water moving. But with a cross-on wind from the WSW at 19 mph, it’s a total mess. Only for the truly insane or those with a kite.
So, to wrap it up: The standout is Tuesday morning the 8th for the expert crew. After that, if you’re patient, Thursday afternoon the 10th offers a clean, glassy window on a smaller but still quality groundswell. The rest of the 16-day run is mostly a write-off due to wind, despite plenty of size.
Stay safe out there.
Rusty.
Short Range ForecastMostly dry. Warm (max 20°C on Tue afternoon, min 9°C on Wed morning). Winds increasing (light winds from the NE on Tue afternoon, fresh winds from the ENE by Wed morning). | Days 4-6 Weather SummaryLight rain (total 4mm), mostly falling on Sat morning. Very mild (max 19°C on Fri afternoon, min 12°C on Thu morning). Winds increasing (calm on Thu afternoon, strong winds from the W by Sat morning). | ||||||||||||||||||||
Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | |||||||||||||||
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 16 | SW 16 | SW 16 | SW 16 | WSW 16 | WSW 16 | WSW 15 | WSW 15 | WSW 15 | WSW 14 | WSW 15 | WSW 15 | WSW 19 | WSW 18 | WSW 16 | W 16 | WSW 15 | W 10 | WSW 13 | WSW 13 | WSW 13 |
Wave Graph | |||||||||||||||||||||
6018 | 5268 | 5922 | 8050 | 6917 | 5091 | 3750 | 3156 | 2336 | 1468 | 1626 | 1716 | 2067 | 2715 | 3934 | 6203 | 1758 | 1556 | 3556 | 4232 | 4421 | |
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 | off | cross-off | off | off | cross-off | glassy | off | cross-off | cross-on | cross-on | on | on | on | on | cross-on | off |
High Tide | 7:44AM0.73m | 8:33AM0.71m | 00:03AM0.36m | 9:18AM0.66m | 11:01PM0.38m | 9:58AM0.58m | 10:44PM0.43m | 10:33AM0.49m | 10:37PM0.50m | 10:59AM0.40m | 10:37PM0.56m | ||||||||||
Low Tide | 3:58PM-0.01m | 4:29PM0.03m | 4:54PM0.10m | 1:33AM0.36m | 5:08PM0.18m | 3:04AM0.32m | 5:00PM0.27m | 4:06AM0.30m | 4:22PM0.32m | 5:04AM0.29m | 3:33PM0.33m | ||||||||||
6:31 | — | — | 6:30 | — | — | 6:28 | — | — | 6:26 | — | — | 6:26 | — | — | 6:24 | — | — | 6:22 | — | — | |
— | 6:05 | — | — | 6:06 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:08 | — | — | 6:08 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | 2 | — | — | 1 | 2 | — |
Temp °C | 15 | 16 | 13 | 15 | 20 | 15 | 15 | 20 | 19 | 15 | 18 | 18 | 18 | 19 | 18 | 17 | 17 | 16 | 17 | 16 | 15 |
Feels °C | 12 | 10 | 7 | 10 | 17 | 9 | 8 | 17 | 15 | 10 | 17 | 17 | 15 | 17 | 12 | 8 | 10 | 9 | 10 | 10 | 11 |
Swell 1 Height (m) Direction Period (s) | SW 16 | SW 16 | SW 16 | SW 16 | WSW 16 | WSW 16 | WSW 15 | WSW 15 | WSW 15 | WSW 14 | WSW 15 | WSW 15 | WSW 14 | WSW 18 | WSW 16 | — | WSW 15 | WSW 14 | WSW 16 | WSW 13 | WSW 13 |
6018 | 5268 | 5922 | 8050 | 6917 | 5091 | 3750 | 3156 | 2336 | 1468 | 1626 | 1716 | 1122 | 2715 | 3934 | — | 1758 | 1556 | 854 | 4232 | 4421 | |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | SSE 7 | — | NNE 5 | WSW 26 | WSW 24 | WSW 22 | SW 21 | WSW 19 | WSW 14 | — | — | — | WSW 18 | — | — | — |
— | — | — | — | — | 54 | — | 19 | 65 | 217 | 311 | 458 | 2067 | 1244 | — | — | — | 340 | — | — | — | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | SW 26 | — | — | N 5 | S 11 | S 11 | — | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | 27 | — | — | 20 | 61 | 21 | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | S 4 | SSE 6 | — | SSE 6 | ENE 4 | NE 5 | — | NE 4 | NNE 6 | — | NNE 4 | N 5 | N 5 | NW 5 | W 16 | W 9 | W 10 | WSW 13 | — | — |
— | 27 | 69 | — | 119 | 31 | 58 | — | 25 | 63 | — | 11 | 11 | 11 | 49 | 6203 | 1726 | 1403 | 3556 | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 21 | 15 | 0 | 0 | 0 | 30 | 0 | 0 | 2 | 0 | 0 | 69 | 69 | 213 | 631 | 1798 | 260 | 552 | 15 | 0 |
Best forecast wave conditions in Margaret River | |||||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)
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.










