Surf Forecasts:
The Window surf forecast from 23 Aug 2026:
- Best quality surf: Wednesday 26 Aug, 8AM (local time) - 15ft (4.5m), 19s period, WSW swell with cross-onshore winds.
- Most powerful swell: Wednesday 26 Aug, 8AM (local time) - 15ft (4.5m), 19s period, WSW swell with 15,643 kJ wave energy.
- Next surfable swell (1★+): Wednesday 26 Aug, 8AM (local time) - 15ft (4.5m), 19s 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 Wednesday (Aug 26) at 8AM. The primary swell is predicted to be 4.5m and 19s period with a secondary swell of 2.5m and 19s. The wind is predicted to be cross-onshore as the swell arrives.
The most powerful waves expected at The Window in the next 16 days are 4.5m 19s and forecast to arrive on Wednesday (Aug 26) at 8AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.7m 6s period and expected on Sunday (Aug 30) at 2PM.
| Wave Type | Time (AWST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Wed 26th Aug) | 15ft (4.5m) 19s |
| Best Surf | 8AM (Wed 26th Aug) | 15ft (4.5m) 19s |
| Most Powerful | 8AM (Wed 26th Aug) | 15ft (4.5m) 19s |
Table - best surf conditions forecast for The Window over the next 16 days.
The Lowdown
Alright, Rusty here, and we've got a solid look at The Window comin' up. This is a proper advanced reef break, fairly exposed to the swell, so when it's on, it's on. The water temp feels about average for this time of year, nothing out of the ordinary.
We're gonna have a bit of a slow start with some messy, onshore winds and big, raw swell that's just not clean enough for a good paddle. Monday the 24th and Tuesday the 25th are write-offs with strong cross-onshore winds and lumpy conditions on waves pushing 8ft to 10ft. You'd be fighting a losing battle. Wednesday the 26th and Thursday the 27th see the swell jacking up to 13ft and even 16ft, but it's still got that cross-shore wind messing it up. The wave energy is huge though – we're talking over 15,000 on Wednesday morning – so it's got plenty of power, but it's just not user-friendly.
Then, Friday the 28th morning is where it gets interesting. The wind drops right out, going glassy. The swell settles to a cleaner 7ft from the SW with a 12-second period. The combined energy is moderate at 1,468, but with glassy conditions, that's a real treat for experienced surfers. It's the first real standout. The afternoon goes a bit wonky with a cross-onshore, so get it early.
Saturday the 29th and Sunday the 30th are cleaner again with cross-offshore winds, and the swell is solid at 8ft to 10ft. Saturday afternoon looks the pick with a 10ft SW groundswell at 17 seconds and light cross-offshore winds. That's a long-period groundswell, which will be peeling nicely down the reef. The energy is strong at 5,634, so it's got some punch. Keep an eye on the crowds though – it can get busy here. That Saturday arvo session is the real highlight for the first week.
The start of September (Monday the 31st through to Thursday the 3rd) brings cleaner but smaller surf in the 8ft to 10ft range. It's rideable but not epic. The winds are mostly cross-off or light cross-on, so you'll get some waves. The wave energy drops back to moderate levels around 2,400 to 3,900.
Now, looking further out, we've got a big pulse forecast for around Sunday the 6th of September. The swell is predicted to be a massive 16ft to 18ft from the WSW, with a 14-second period. The wind is looking like a clean cross-offshore, and the wave energy is right up there – over 11,000. It's promising, but it's a long way out. That Monday the 7th morning is the one that's got me stoked – an 18ft WSW swell with a 14-second period and a gentle offshore wind from the east. The wave energy is a massive 11,195, and the report says exceptional conditions for experts. That is the standout of the whole outlook. But as always, keep an eye on the forecasts as it gets closer.
Rusty.
Short Range ForecastModerate rain (total 12mm), heaviest on Tue afternoon. Very mild (max 17°C on Tue morning, min 14°C on Sun night). Winds increasing (light winds from the W on Mon morning, strong winds from the NW by Tue morning). | Days 5-7 Weather SummaryLight rain (total 4mm), mostly falling on Wed night. Very mild (max 14°C on Wed night, min 10°C on Sat morning). Winds decreasing (fresh winds from the SSW on Thu morning, calm by Fri morning). | ||||||||||||||||||
Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | ||||||||||||||
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 15 | WSW 13 | SW 13 | WSW 12 | WSW 14 | WSW 13 | WSW 14 | WSW 18 | WSW 17 | WSW 16 | WSW 15 | WSW 14 | SW 13 | SW 12 | SW 12 | SW 11 | SW 16 | SW 17 | WSW 17 |
Wave Graph | |||||||||||||||||||
4631 | 2820 | 2111 | 1715 | 2446 | 3298 | 5434 | 15493 | 15162 | 9939 | 6483 | 4820 | 2641 | 1439 | 1111 | 638 | 2726 | 5634 | 6916 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross | cross-on | cross | cross | cross-off | glassy | cross-on | off | cross-off | cross-off | cross-off |
High Tide | 7:16AM0.68m | 7:56AM0.70m | 8:31AM0.71m | 9:03AM0.69m | 11:40PM0.34m | 9:34AM0.66m | 11:21PM0.37m | 10:03AM0.60m | 11:15PM0.42m | ||||||||||
Low Tide | 4:34PM0.07m | 4:51PM0.09m | 5:03PM0.11m | 5:10PM0.14m | 2:00AM0.33m | 5:12PM0.19m | 3:12AM0.32m | 5:11PM0.23m | 4:16AM0.31m | ||||||||||
— | 6:48 | — | — | 6:48 | — | — | 6:47 | — | — | 6:45 | — | — | 6:43 | — | — | 6:43 | — | — | |
5:54 | — | 5:55 | — | — | 5:57 | — | — | 5:57 | — | — | 5:58 | — | — | 5:59 | — | — | 5:59 | — | |
mm | — | — | — | — | 1 | 5 | 3 | 1 | 2 | 2 | 2 | — | — | — | — | — | — | — | — |
Temp °C | 15 | 15 | 15 | 16 | 17 | 17 | 17 | 15 | 15 | 14 | 13 | 14 | 14 | 12 | 14 | 13 | 12 | 14 | 15 |
Feels °C | 12 | 12 | 10 | 10 | 11 | 10 | 12 | 10 | 10 | 8 | 6 | 8 | 9 | 11 | 10 | 9 | 8 | 10 | 13 |
Swell 1 Height (m) Direction Period (s) | WSW 15 | WSW 13 | SW 13 | WSW 12 | WSW 14 | WSW 13 | WSW 14 | WSW 18 | WSW 17 | WSW 16 | WSW 15 | WSW 14 | SW 13 | SW 12 | SW 12 | SW 11 | SW 16 | SW 17 | WSW 17 |
4631 | 2820 | 2111 | 1715 | 2446 | 3298 | 5434 | 15493 | 15162 | 9939 | 6483 | 4820 | 2641 | 1439 | 1111 | 638 | 2726 | 5634 | 6916 | |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | WSW 22 | NNW 6 | — | — | — | — | W 21 | SW 20 | SW 20 | WSW 18 | SW 20 | — | — |
— | — | — | — | — | — | 363 | 22 | — | — | — | — | 9 | 16 | 60 | 211 | 746 | — | — | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | S 12 | — | — | — | — | — | — | W 26 | SW 24 | WSW 22 | — | — | — |
— | — | — | — | — | — | 3 | — | — | — | — | — | — | 13 | 22 | 181 | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | — | WNW 4 | NW 4 | NW 6 | NW 7 | — | — | — | — | — | — | — | — | — | ENE 3 | NE 4 | NNE 5 | — |
— | — | 10 | 21 | 160 | 312 | — | — | — | — | — | — | — | — | — | 3 | 22 | 13 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 3 | 21 | 69 | 69 | 231 | 260 | 15 | 19 | 310 | 19 | 78 | 3 | 0 | 0 | 21 | 0 | 11 | 0 | 0 |
Best forecast wave conditions in Margaret River | |||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||
Header Global | |||||||||||||||||||
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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.











