
Surf Forecasts:
The Window surf forecast from 8 Sep 2026:
- Best quality surf: Tuesday 8 Sep, 11PM (local time) - 11ft (3.5m), 16s period, WSW swell with offshore winds.
- Most powerful swell: Tuesday 8 Sep, 8PM (local time) - 11ft (3.5m), 16s period, WSW swell with 5,968 kJ wave energy.
- Next surfable swell (1★+): Tuesday 8 Sep, 11PM (local time) - 11ft (3.5m), 16s period with WSW 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 11PM. The primary swell is predicted to be 3.5m and 16s period with a secondary swell of 0.8m and 7s. 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 3.5m 16s and forecast to arrive on Tuesday (Sep 08) at 8PM. Winds are predicted to be 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 Thursday (Sep 10) at 11AM.
| Wave Type | Time (AWST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Tue 8th Sep) | 11ft (3.5m) 16s |
| Best Surf | 11PM (Tue 8th Sep) | 11ft (3.5m) 16s |
| Most Powerful | 8PM (Tue 8th Sep) | 11ft (3.5m) 16s |
Table - best surf conditions forecast for The Window over the next 16 days.
The Lowdown
Alright, Rusty here. Let's have a look at what's coming down the line for The Window. The water's sittin' at 65° right now, which is about normal for this time of year, so no surprises there.
Straight up, the first few days have some waves, but they're a bit of a mixed bag. Tuesday afternoon kicks things off with a solid 12 ft groundswell from the WSW, with a long 16-second period. The combined energy is pumping at 6917 (moderate to strong). The wind is a light cross-off from the NE, which should keep it clean. But this is a heavy reef break, and that size is only for the experienced crew. Definitely not one for the beginners.
Wednesday morning is a bit of a write-off with strong onshore winds, but Wednesday afternoon settles down. The swell drops to 8 ft from the WSW, with a 15-second period, and the wind swings offshore from the ENE. That's a clean, nice wave for experienced surfers. The energy is still strong at 3183 (moderate).
Thursday and Friday sees the swell dropping, but the wind stays messy. Thursday afternoon has a light cross-onshore, and Friday is just choppy. The surf is there, but it's not going to be pretty.
Now, here's where it gets interesting. The weekend from Saturday the 12th to Sunday the 13th is a total loss. The wind is howling onshore from the W and WSW, and the swell is big and ugly. Just leave it alone.
But hold on. Monday the 14th morning is a standout. The swell is back up to 12 ft from the WSW, with a 14-second period, and the wind is light cross-off from the NE. The energy is huge at 5450 (strong). This is the best of the early run. Clean, powerful, and only for the experts.
The following week, the swell really starts to pump. The best of the whole forecast, though, is Monday the 21st. The swell is a massive 18 ft from the SW, with a 16-second period, but the wind is a gentle offshore from the S. The energy is astronomical at 16623 (very strong). This is a true big-wave day for the experts. The days before that, on the 20th, the swell is even bigger at 20 ft to 21 ft, which is just too big for The Window, even if the wind is okay.
After that, the swell stays big through the 22nd and 23rd, but the wind turns onshore or messy, so the quality drops off. Those last few days are just for the die-hards who can handle the size and the chop.
So, to sum it up: if you're a seasoned charger, your best bet is the afternoon of Wednesday the 9th, and the morning of Monday the 14th. But the absolute king of the period is Monday the 21st. Mark it in your calendar, but keep in mind it's a long way out, so things could still change.
Rusty.
Short Range ForecastMostly dry. Warm (max 20°C on Tue afternoon, min 9°C on Wed morning). Mainly fresh winds. | Days 5-7 Weather SummaryLight rain (total 2mm), mostly falling on Fri night. Very mild (max 17°C on Fri afternoon, min 13°C on Sun night). Winds decreasing (fresh winds from the NW on Fri night, light winds from the NE by Mon morning). | |||||||||||||||||||
Tue 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | ||||||||||||||
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) | WSW 16 | WSW 16 | WSW 15 | WSW 15 | WSW 15 | WSW 14 | WSW 15 | WSW 15 | WSW 19 | WSW 18 | WSW 17 | WSW 16 | WSW 16 | WSW 14 | WSW 13 | WSW 14 | WSW 14 | WSW 14 | WSW 15 | WSW 15 |
Wave Graph | ||||||||||||||||||||
6917 | 5424 | 3750 | 3156 | 2336 | 1468 | 1648 | 1739 | 1684 | 2410 | 3697 | 2295 | 3754 | 2831 | 3314 | 5417 | 4192 | 5450 | 5868 | 5093 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | cross-off | off | off | cross-off | cross-on | cross-off | cross-off | cross | cross-on | on | on | on | on | cross-on | cross-off | cross-off | cross | cross-off |
High Tide | 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 | 10:32AM0.32m | 10:42PM0.61m | ||||||||
Low Tide | 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 | 6:09AM0.29m | 2:41PM0.29m | ||||||||
— | — | 6:28 | — | — | 6:26 | — | — | 6:26 | — | — | 6:24 | — | — | 6:22 | — | — | 6:20 | — | — | |
6:06 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:08 | — | — | 6:08 | — | — | 6:09 | — | |
mm | — | — | — | — | — | — | — | — | — | — | 2 | — | — | — | — | — | — | — | — | — |
Temp °C | 20 | 15 | 13 | 19 | 18 | 14 | 18 | 17 | 17 | 17 | 17 | 16 | 17 | 16 | 17 | 17 | 15 | 16 | 17 | 14 |
Feels °C | 17 | 10 | 7 | 15 | 14 | 9 | 15 | 14 | 13 | 13 | 13 | 11 | 12 | 13 | 12 | 13 | 13 | 15 | 16 | 10 |
Swell 1 Height (m) Direction Period (s) | WSW 16 | WSW 16 | WSW 15 | WSW 15 | WSW 15 | WSW 14 | WSW 15 | WSW 15 | WSW 14 | WSW 18 | WSW 17 | WSW 16 | WSW 16 | WSW 14 | WSW 16 | WSW 14 | WSW 14 | WSW 14 | WSW 15 | WSW 15 |
6917 | 5424 | 3750 | 3156 | 2336 | 1468 | 1648 | 1739 | 1189 | 2410 | 3697 | 2295 | 3754 | 2831 | 1036 | 5417 | 4192 | 5450 | 5868 | 5093 | |
Swell 2 Height (m) Direction Period (s) | — | — | — | NNE 6 | WSW 26 | SW 24 | N 6 | SW 21 | WSW 19 | WSW 14 | — | WSW 9 | — | W 18 | — | — | — | — | — | — |
— | — | — | 18 | 65 | 141 | 31 | 450 | 1684 | 1396 | — | 589 | — | 160 | — | — | — | — | — | — | |
Swell 3 Height (m) Direction Period (s) | — | — | — | SW 26 | — | — | WSW 22 | — | WSW 16 | — | — | — | — | — | — | — | — | — | — | — |
— | — | — | 27 | — | — | 308 | — | 326 | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | SSE 6 | ENE 4 | NE 6 | — | NE 4 | NNE 5 | — | — | N 5 | N 5 | WNW 5 | — | — | — | WSW 13 | — | — | — | — | — |
100 | 15 | 43 | — | 29 | 72 | — | — | 47 | 39 | 116 | — | — | — | 3314 | — | — | — | — | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 0 | 0 | 2 | 0 | 4 | 2 | 4 | 2 | 69 | 69 | 213 | 363 | 414 | 213 | 363 | 15 | 0 | 0 | 3 | 3 |
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.










