Surf Forecasts:
The Window surf forecast from 6 Sep 2026:
- Best quality surf: Tuesday 8 Sep, 11AM (local time) - 13ft (4.0m), 16s period, SW swell with offshore winds.
- Most powerful swell: Sunday 6 Sep, 8PM (local time) - 15ft (4.5m), 17s period, SW swell with 10,792 kJ wave energy.
- Next surfable swell (1★+): Monday 7 Sep, 11AM (local time) - 11ft (3.5m), 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 Monday (Sep 07) at 11AM. The primary swell is predicted to be 3.5m and 16s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at The Window in the next 16 days are 4.5m 17s and forecast to arrive on Sunday (Sep 06) at 8PM. Winds are predicted to be cross-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 Wednesday (Sep 09) at 8AM.
| Wave Type | Time (AWST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11AM (Mon 7th Sep) | 11ft (3.5m) 16s |
| Best Surf | 11AM (Tue 8th Sep) | 13ft (4.0m) 16s |
| Most Powerful | 8PM (Sun 6th Sep) | 15ft (4.5m) 17s |
Table - best surf conditions forecast for The Window over the next 16 days.
The Lowdown
Alright, folks, Rusty here. Let's take a look at what The Window is gonna do for us over the next couple of weeks.
The first good chance to get wet is on Monday, September 7th. The Window is a solid reef break, built for experienced surfers, and it's fairly consistent. Water temp is about 18°, a touch warmer than normal for this time of year.
The real standout is Tuesday, September 8th. We've got a serious groundswell coming from the SW at 13 feet, with a long period around 16 seconds. The combined wave energy is a massive 8397 (strong). The wind is offshore from the ESE in the morning, a moderate breeze that'll keep the face clean. This is strictly for experts. The afternoon gets even better with a light offshore from the ENE and still 12 feet of swell. That's the best session of the whole forecast.
Monday the 7th morning is also worth a look: 12 feet of SW swell, 16-second period, with a light SE cross-off wind. Good for experienced surfers, but the afternoon gets a fresh SSE breeze that'll chop it up.
Wednesday the 9th morning is a mess with a fresh cross-off wind, but the afternoon glassies off with a light offshore ENE breeze and 10 feet of swell. Not as powerful as Tuesday, but clean.
Then we hit a lousy stretch. From Thursday the 10th through Sunday the 13th, the wind is onshore or cross-onshore, mostly fresh. There's swell, but it's lumpy and choppy. Not worth the paddle.
It cleans up again on Monday the 14th morning: 12 feet of SW swell, light NNE cross-off. A solid option for experienced surfers, with strong energy at 4541. Tuesday the 15th morning offers a smaller 8 feet of SW swell with a light north cross-off, a good one for a more relaxed session.
After that, it's back to messy conditions through the end of the forecast. The 18th of September shows a huge 16 to 18 foot SW swell, but the wind is onshore and fresh – more of a kite session than a paddle one. From the 16th to the 21st it's mostly poor, with onshore winds and lumpy conditions.
So, the top pick is Tuesday, September 8th – morning and afternoon. That's the one. Monday the 14th is a solid backup.
Rusty out.
Short Range ForecastMostly dry. Warm (max 20°C on Tue afternoon, min 10°C on Tue morning). Winds decreasing (fresh winds from the SSE on Sun afternoon, light winds from the ENE by Tue afternoon). | Days 4-6 Weather SummaryLight rain (total 3mm), mostly falling on Fri night. Very mild (max 19°C on Wed afternoon, min 10°C on Wed morning). Winds decreasing (fresh winds from the ENE on Wed morning, light winds from the NNW by Thu afternoon). | ||||||||||||||||||||
Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | |||||||||||||||
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) | WSW 12 | WSW 17 | SW 17 | SW 16 | SW 16 | SW 16 | SW 16 | WSW 16 | WSW 16 | WSW 15 | WSW 15 | WSW 15 | WSW 14 | WSW 14 | WSW 15 | WSW 14 | WSW 18 | WSW 16 | WSW 16 | WSW 15 | WSW 14 |
Wave Graph  | |||||||||||||||||||||
 kJ | 3119 | 3378 | 9105 | 6018 | 5268 | 6537 | 8397 | 6917 | 5091 | 3750 | 3361 | 2336 | 1667 | 1447 | 1546 | 1449 | 3037 | 3886 | 3222 | 3900 | 4507 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | off | off | cross-off | off | off | cross-off | cross-on | cross-off | on | cross-on | on | on | cross-on | on |
High Tide | 6:47AM0.73m | 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 | |||||||||||
Low Tide | 3:24PM-0.02m | 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 | |||||||||||
 |  |  | | | | | | | | | | | |  |  | |  | |  | | |
 | 6:31 | — | — | 6:31 | — | — | 6:30 | — | — | 6:28 | — | — | 6:26 | — | — | 6:26 | — | — | 6:24 | — | — |
 | — | 6:05 | — | — | 6:05 | — | — | 6:06 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:08 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 3 | — | 1 | 1 |
Temp °C | 15 | 16 | 12 | 15 | 17 | 13 | 15 | 20 | 16 | 14 | 19 | 19 | 15 | 18 | 18 | 18 | 18 | 18 | 17 | 17 | 17 |
Feels °C | 7 | 8 | 6 | 12 | 12 | 7 | 10 | 16 | 11 | 7 | 17 | 15 | 10 | 14 | 15 | 17 | 15 | 14 | 13 | 12 | 10 |
Swell 1 Height (m) Direction Period (s) | WSW 12 | WSW 13 | SW 17 | SW 16 | SW 16 | SW 16 | SW 16 | WSW 16 | WSW 16 | WSW 15 | WSW 15 | WSW 15 | WSW 14 | WSW 14 | WSW 15 | WSW 14 | WSW 18 | WSW 16 | WSW 16 | WSW 15 | — |
| kJ | 3119 | 2519 | 9105 | 6018 | 5268 | 6537 | 8397 | 6917 | 5091 | 3750 | 3361 | 2336 | 1667 | 1447 | 1546 | 1449 | 3037 | 3886 | 3222 | 3900 | — |
Swell 2 Height (m) Direction Period (s) | SW 20 | WSW 17 | — | — | — | — | — | — | SSE 7 | SSE 7 | NNE 5 | WSW 26 | WSW 24 | N 5 | WSW 21 | WSW 20 | WSW 13 | — | — | — | — |
| kJ | 575 | 3378 | — | — | — | — | — | — | 26 | 9 | 15 | 65 | 217 | 29 | 302 | 1014 | 878 | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | SW 26 | — | — | WSW 22 | NNE 5 | SSW 11 | S 11 | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | 27 | — | — | 311 | 4 | 23 | 9 | — | — | — | — |
Wind waves Height (m) Direction Period (s) | S 8 | S 7 | — | — | S 4 | — | — | — | ENE 4 | NE 5 | — | NE 4 | NNE 5 | — | — | — | — | W 4 | W 5 | — | WSW 14 |
| kJ | 520 | 311 | — | — | 19 | — | — | — | 19 | 55 | — | 27 | 66 | — | — | — | — | 15 | 94 | — | 4507 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 1688 | 55 | 3 | 0 | 19 | 3 | 0 | 0 | 0 | 30 | 0 | 0 | 61 | 3 | 0 | 15 | 231 | 260 | 858 | 363 | 260 |
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.
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