Surf Forecasts:
The Window surf forecast from 22 Aug 2026:
- Best quality surf: Saturday 29 Aug, 11PM (local time) - 11ft (3.5m), 19s period, SW swell with offshore winds.
- Most powerful swell: Wednesday 26 Aug, 8AM (local time) - 16ft (5.0m), 19s period, WSW swell with 18,211 kJ wave energy.
- Next surfable swell (1★+): Monday 24 Aug, 2AM (local time) - 11ft (3.5m), 15s 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 Monday (Aug 24) at 2AM. The primary swell is predicted to be 3.5m and 15s period. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at The Window in the next 16 days are 5.0m 19s and forecast to arrive on Wednesday (Aug 26) at 8AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 5s period and expected on Friday (Aug 28) at 8PM.
| Wave Type | Time (AWST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Mon 24th Aug) | 11ft (3.5m) 15s |
| Best Surf | 11PM (Sat 29th Aug) | 11ft (3.5m) 19s |
| Most Powerful | 8AM (Wed 26th Aug) | 16ft (5.0m) 19s |
Table - best surf conditions forecast for The Window over the next 16 days.
The Lowdown
Alright, let’s talk in feet and miles per hour for the same stretch at The Window.
We’re starting a bit slow for the first few days, but stick with me – the back half of this run gets heavy.
Sunday the 23rd and Monday the 24th are not your days. There’s a 2.5m (8ft) SW groundswell rolling in with a 13-second interval, so there’s push, but the wind is onshore or cross-shore at 20-25 mph. The surface is choppy. Wave energy is moderate (2468). Leave it.
Tuesday the 25th sees the swell bumping to 3.5m (12ft) by the afternoon, but a fresh breeze from the NW at 35 mph gets it messy. Energy’s up (4167), but it’s lumpy and ugly.
Wednesday the 26th – now we’re talking size. Morning hits 5.0m (16ft) with a very long 18-second period. That’s a serious groundswell. Wind is light cross-on at 15 mph, so a little bumpy. The afternoon is a touch cleaner with light cross-shore breeze. Energy is very strong (17783). It’s big, but this is only for experts.
Thursday the 27th and Friday the 28th both have clean offshore winds from the SSE at 20-30 mph, with the swell dropping from 4.0m (13ft) to 2.1m (7ft). The surf is clean, but the wind has moderate to fresh breeze on it. Still, for experienced surfers, this is good, especially the Thursday morning with a 4.0m SW groundswell.
Saturday the 29th of August is the highlight. Morning starts with a nice 1.7m (6ft) SW swell and a gentle offshore breeze from the east. But the afternoon? Glassy. Dead flat wind from the SE at 5 mph, 2.5m (8ft) of SW groundswell, and a 16-second period. The energy is strong (4699). The window is clean, the swell is from the optimum direction, and the wind is perfect. This is the session to aim for. Crowds will be a factor.
Sunday the 30th has a good morning – 3.0m (10ft), light offshore, clean. The afternoon gets a cross-on wind, so get your waves early.
From Monday the 31st through to Saturday the 5th of September, it’s a mess of cross-on to onshore winds, choppy surface, and waves from 2.5m to 5.5m (18ft) with a short period. Not worth the paddle.
Now, Sunday the 6th of September – an 8.5m (28ft) WSW groundswell with a 17-second period. The combined energy is massive (38154). The wind is cross-on at 15 mph. The data says it’s simply too big for The Window. Monday the 7th is similar with a 6.5m (21ft) swell. For most surfers, that’s a no-go zone.
Water temperature doesn’t show an anomaly, so it’s running about where you’d expect for this time of year.
Your best bet? Saturday the 29th of August – glassy, clean, 2.5m of long-period SW groundswell. That’s the one. For the big-wave crew, the 26th afternoon is the other call, but you better be on your game.
Rusty.
Short Range ForecastLight rain (total 5mm), mostly falling on Tue afternoon. Very mild (max 17°C on Tue afternoon, min 13°C on Sun night). Winds increasing (calm on Sun night, fresh winds from the NW by Tue afternoon). | Days 5-7 Weather SummaryModerate rain (total 14mm), heaviest on Tue night. Very mild (max 17°C on Tue night, min 12°C on Fri morning). Mainly fresh winds. | ||||||||||||||||||
Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | ||||||||||||||
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 14 | SW 13 | SW 13 | WSW 15 | WSW 13 | SW 13 | WSW 12 | WSW 14 | WSW 13 | WSW 14 | WSW 18 | WSW 17 | SW 16 | SW 15 | SW 14 | SW 13 | SW 12 | SW 12 | SW 11 |
Wave Graph  | |||||||||||||||||||
 kJ | 1785 | 2108 | 2241 | 4631 | 2820 | 2111 | 1735 | 2618 | 4167 | 6105 | 17783 | 15441 | 10265 | 6339 | 5115 | 2740 | 1525 | 1189 | 544 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | glassy | cross-on | cross-on | cross-on | cross | cross-on | on | cross-on | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off |
High Tide | 6:30AM0.65m | 7:16AM0.68m | 7:56AM0.70m | 8:31AM0.71m | 9:03AM0.69m | 11:40PM0.34m | 9:34AM0.66m | 11:21PM0.37m | |||||||||||
Low Tide | 4:15PM0.07m | 4:34PM0.07m | 4:51PM0.09m | 5:03PM0.11m | 5:10PM0.14m | 2:00AM0.33m | 5:12PM0.19m | 3:12AM0.32m | |||||||||||
 |  |  | | | |  |  |  |  | |  |  | | | | | | | |
 | — | 6:50 | — | — | 6:48 | — | — | 6:48 | — | — | 6:47 | — | — | 6:45 | — | — | 6:43 | — | — |
 | 5:53 | — | 5:54 | — | — | 5:55 | — | — | 5:57 | — | — | 5:57 | — | — | 5:58 | — | — | 5:59 | — |
mm | — | 1 | — | — | — | — | — | — | 4 | 8 | 5 | — | 1 | — | — | — | — | — | — |
Temp °C | 15 | 15 | 14 | 14 | 15 | 15 | 16 | 16 | 17 | 17 | 14 | 15 | 14 | 14 | 14 | 13 | 14 | 17 | 13 |
Feels °C | 10 | 11 | 9 | 10 | 12 | 10 | 10 | 11 | 11 | 13 | 12 | 13 | 10 | 7 | 6 | 7 | 9 | 12 | 7 |
Swell 1 Height (m) Direction Period (s) | SW 14 | SW 13 | SW 13 | WSW 15 | WSW 13 | SW 13 | WSW 12 | WSW 14 | WSW 13 | WSW 14 | WSW 18 | WSW 17 | SW 16 | SW 15 | SW 14 | SW 13 | SW 12 | SW 12 | SW 11 |
| kJ | 1785 | 2108 | 2241 | 4631 | 2820 | 2111 | 1735 | 2618 | 4167 | 6105 | 17783 | 15441 | 10265 | 6339 | 5115 | 2740 | 1525 | 1189 | 544 |
Swell 2 Height (m) Direction Period (s) | WSW 20 | WSW 18 | WSW 16 | — | — | — | — | — | — | WSW 22 | — | — | — | — | — | W 21 | SW 21 | SW 20 | S 6 |
| kJ | 75 | 360 | 1209 | — | — | — | — | — | — | 668 | — | — | — | — | — | 9 | 17 | 60 | 32 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | S 12 | — | — | — | — | — | — | — | SW 24 | SW 18 |
| kJ | — | — | — | — | — | — | — | — | — | 3 | — | — | — | — | — | — | — | 23 | 155 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | NW 5 | — | — | — | — | — | — | — | — | — | — | E 3 |
| kJ | — | — | — | — | — | — | — | 70 | — | — | — | — | — | — | — | — | — | — | 4 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 3 | 3 | 3 | 0 | 11 | 194 | 69 | 260 | 213 | 3 | 19 | 3 | 78 | 1910 | 1688 | 3 | 3 | 8 | 0 |
Best forecast wave conditions in Margaret River | |||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||
Header Global | |||||||||||||||||||
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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our The Window surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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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