Surf Forecasts:
The Window surf forecast from 25 Aug 2026:
- Best quality surf: Saturday 29 Aug, 5PM (local time) - 8ft (2.5m), 17s period, SW swell with offshore winds.
- Most powerful swell: Wednesday 26 Aug, 11AM (local time) - 15ft (4.5m), 18s period, WSW swell with 13,576 kJ wave energy.
- Next surfable swell (1★+): Saturday 29 Aug, 11AM (local time) - 6ft (1.9m), 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 Saturday (Aug 29) at 11AM. The primary swell is predicted to be 1.9m and 16s period with a secondary swell of 1.2m and 19s. 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 4.5m 18s and forecast to arrive on Wednesday (Aug 26) at 11AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 6s period and expected on Friday (Aug 28) at 2PM.
| Wave Type | Time (AWST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11AM (Sat 29th Aug) | 6ft (1.9m) 16s |
| Best Surf | 5PM (Sat 29th Aug) | 8ft (2.5m) 17s |
| Most Powerful | 11AM (Wed 26th Aug) | 15ft (4.5m) 18s |
Table - best surf conditions forecast for The Window over the next 16 days.
The Lowdown
Alright, Rusty here, let's break down the surf for the next couple of weeks.
The Window is the only spot in the running, and it’s an advanced reef that’s fairly consistent. The first few days are a bit of a mixed bag with a big, raw swell, but the real standout is Saturday the 29th of August. We’ve got a solid 10ft SW groundswell with a 17-second period, and a light offshore breeze. That’s proper, heavy, clean reef-surf for the experienced. The water temp is about average for the time of year.
The next big standout is Monday the 7th of September, with a 12ft SW swell at 16 seconds and glassy conditions in the afternoon. The energy is very high on both days.
Let’s go through it in order.
Wednesday 26th August – a massive 15ft to 16ft WSW swell, but the wind is messy. The morning is cross-on and choppy, and the afternoon is cleaner but the swell is still huge. For the brave only.
Thursday 27th August – the swell is still too big for most at 12ft to 13ft, with fresh, lumpy wind in the morning. The afternoon is cleaner, but it’s still heavy.
Friday 28th August – the swell drops to around 6ft to 7ft, but the wind is cross-off and the period is 12 seconds. Surfable but nothing special.
Saturday 29th August – the first standout. Offshore wind all day, with a 10ft SW swell at 17 seconds. The energy is very high. This is a clean, powerful, heavy reef wave for experts only.
Sunday 30th August – the swell is still 10ft, but the wind turns cross-off in the morning, then cross-on in the afternoon. The morning is the cleaner option.
Monday 31st August – morning onshore wind is a write-off. The afternoon is better, but the wind is fresh and the swell is 12ft.
Tuesday 1st September – cross-on wind and a 12ft to 13ft WSW swell. Not the best conditions.
Wednesday 2nd & Thursday 3rd September – onshore and cross-on wind, with the swell around 10ft to 12ft. Choppy and messy.
Friday 4th September – clean conditions in the morning with a light cross-off breeze and an 8ft SW swell. A decent session.
Saturday 5th & Sunday 6th September – cross-shore wind and swell in the 7ft to 10ft range. A bit lumpy. Sunday morning is the pick with a light offshore, but only a 7ft swell.
Monday 7th September – the second major standout. A 12ft SW swell at 16 seconds, with a gentle offshore in the morning and glassy in the afternoon. The energy is very high. Top-tier for experts.
Tuesday 8th September – the swell holds at 12ft WSW at 17 seconds, with clean conditions. Another great day.
Wednesday 9th & Thursday 10th September – the swell drops to 7ft to 8ft, with a very long 19-second period on Thursday. Clean conditions, but the energy is more moderate.
The best days are Saturday the 29th of August and Monday the 7th of September. Big swell, right wind, clean conditions. The Window is a reef break and it’s for experts.
Rusty.
Short Range ForecastModerate rain (total 10mm), heaviest on Wed afternoon. Very mild (max 18°C on Fri afternoon, min 10°C on Thu night). Mainly fresh winds. | Days 4-6 Weather SummarySome drizzle, heaviest during Mon afternoon. Warm (max 20°C on Sat afternoon, min 10°C on Sat morning). Mainly fresh winds. | ||||||||||||||||||||
Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | |||||||||||||||
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 18 | WSW 17 | WSW 16 | SW 15 | SW 14 | WSW 13 | SW 12 | WSW 12 | SW 11 | SW 16 | SW 17 | SW 17 | WSW 17 | WSW 16 | WSW 16 | WSW 18 | WSW 16 | WSW 16 | WSW 15 | WSW 14 | WSW 14 |
Wave Graph  | |||||||||||||||||||||
 kJ | 13576 | 12940 | 9185 | 6486 | 5020 | 2084 | 1494 | 769 | 455 | 1783 | 4393 | 5426 | 5469 | 3875 | 3374 | 1455 | 5101 | 4219 | 3576 | 3071 | 2259 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | off | off | cross-off | cross-on | on | on | cross | cross | on | on | on |
High Tide | 8:31AM0.71m | 9:03AM0.69m | 11:40PM0.34m | 9:34AM0.66m | 11:21PM0.37m | 10:03AM0.60m | 11:15PM0.42m | 10:30AM0.52m | 11:17PM0.48m | 10:51AM0.43m | 11:29PM0.54m | 10:36AM0.34m | 11:51PM0.60m | ||||||||
Low Tide | 5:03PM0.11m | 5:10PM0.14m | 2:00AM0.33m | 5:12PM0.19m | 3:12AM0.32m | 5:11PM0.23m | 4:16AM0.31m | 5:04PM0.27m | 5:23AM0.30m | 4:46PM0.30m | 6:49AM0.30m | 3:50PM0.29m | |||||||||
 | |  |  |  |  | | | | | | | | |  | | | | | |  | |
 | 6:47 | — | — | 6:45 | — | — | 6:43 | — | — | 6:43 | — | — | 6:41 | — | — | 6:39 | — | — | 6:39 | — | — |
 | — | 5:57 | — | — | 5:58 | — | — | 5:59 | — | — | 5:59 | — | — | 6:00 | — | — | 6:00 | — | — | 6:00 | — |
mm | 2 | 5 | 3 | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — |
Temp °C | 15 | 13 | 13 | 15 | 15 | 12 | 14 | 18 | 13 | 15 | 20 | 17 | 17 | 17 | 17 | 17 | 16 | 14 | 14 | 14 | 15 |
Feels °C | 10 | 9 | 9 | 8 | 7 | 6 | 8 | 13 | 8 | 11 | 17 | 14 | 14 | 14 | 17 | 13 | 12 | 10 | 9 | 9 | 11 |
Swell 1 Height (m) Direction Period (s) | WSW 18 | WSW 17 | WSW 16 | SW 15 | SW 14 | WSW 13 | SW 12 | WSW 12 | SW 11 | SW 16 | SW 17 | SW 17 | WSW 17 | WSW 16 | WSW 16 | WSW 14 | WSW 16 | WSW 16 | WSW 15 | WSW 14 | WSW 14 |
| kJ | 13576 | 12940 | 9185 | 6486 | 5020 | 2084 | 1494 | 769 | 455 | 1783 | 4393 | 5426 | 5469 | 3875 | 3374 | 1455 | 5101 | 4219 | 3576 | 3071 | 2259 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | W 21 | SW 20 | SW 20 | SW 18 | SW 19 | — | — | — | — | N 4 | WSW 18 | — | — | — | — | — |
| kJ | — | — | — | — | — | 9 | 16 | 60 | 260 | 1088 | — | — | — | — | 6 | 1339 | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | SW 25 | WSW 24 | WSW 22 | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | 25 | 54 | 308 | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | SSE 7 | SSE 6 | S 6 | SSE 6 | SE 3 | — | NE 4 | — | N 4 | WNW 4 | WNW 6 | — | — | — | — | — |
| kJ | — | — | — | — | — | 166 | 100 | 110 | 62 | 5 | — | 14 | — | 20 | 10 | 148 | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 15 | 78 | 16 | 1322 | 76 | 15 | 205 | 3 | 3 | 0 | 0 | 0 | 75 | 69 | 19 | 671 | 1688 | 3 | 22 | 21 | 156 |
Best forecast wave conditions in Margaret River | |||||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||||
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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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