Surf Forecasts:
The Window surf forecast from 5 Aug 2026:
- Best quality surf: Saturday 8 Aug, 2PM (local time) - 21ft (6.5m), 16s period, SW swell with cross-onshore winds.
- Most powerful swell: Tuesday 11 Aug, 5AM (local time) - 28ft (8.5m), 18s period, SW swell with 42,665 kJ wave energy.
- Next surfable swell (1★+): Saturday 8 Aug, 2PM (local time) - 21ft (6.5m), 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 Saturday (Aug 08) at 2PM. The primary swell is predicted to be 6.5m and 16s period. 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 8.5m 18s and forecast to arrive on Tuesday (Aug 11) at 5AM. Winds are predicted to be cross-shore at the time the swell arrives.
| Wave Type | Time (AWST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2PM (Sat 8th Aug) | 21ft (6.5m) 16s |
| Best Surf | 2PM (Sat 8th Aug) | 21ft (6.5m) 16s |
| Most Powerful | 5AM (Tue 11th Aug) | 28ft (8.5m) 18s |
Table - best surf conditions forecast for The Window over the next 16 days.
The Lowdown
Alright, let me break it down for The Window in terms that make sense on the old scale.
Right now and for the first few days of August, it’s a tough go. We got a big WSW groundswell at about 13 feet with a long 16-second period, but the wind is blastin’ in from the NW at 18 mph, makin’ it cross-on and lumpy as hell. The combined energy of all swells is pumpin’ hard at 7956 (moderate to strong), so there’s plenty of power—but it’s a mess. Water temp is around 67°, which is a touch warmer than normal for this time of year. Feels fine till you’re gettin’ your ass kicked by the wind.
Through Friday (August 7) and Saturday (August 8) the wind stays onshore and nasty. Saturday gets especially gnarly: swell hits 21 feet from the SW with a 17-second period, combined energy near 24746 (very strong). That’s well over 8 feet, so strictly for experts—and even then, the wind is strong cross-onshore. Honestly, this looks more like a kite surfer’s kind of day than a paddle surfer’s.
By Monday (August 10) the wind gets close to gale force with a 21-foot swell. Not what anyone wants.
Things finally start cleanin’ up around Wednesday (August 12) and Thursday (August 13). Winds go light and onshore at around 6-9 mph. Swell sits at a clean 13 feet from the SW with a 16-second period. Combined energy is moderate (around 6791 to 7596). Rideable, but nothin’ to write home about.
Then we get the first real standout: Friday, August 14. Morning brings a light NE cross-off breeze at 6 mph and a 13-foot SW groundswell, 16-second period. Combined energy at 8381 (moderate but punchy). That afternoon? Glassy. Wind drops to 3 mph from the north, and the swell holds solid at 13 feet. That’s exceptional surf for expert surfers—big, clean waves at a reef break that demands respect.
After that, Saturday (August 15) freshens up with NNE wind at 21 mph, muckin’ up the 10-foot WSW swell. Then it’s back to onshores and lumpy conditions for the rest of the second week.
But here’s the real gold: Thursday, August 20. The forecast shows the swell back up to 20 feet from the W with a 16-second period, combined energy of 19768 (strong), and the wind is a light SE cross-off in the mornin’ and dead calm glass in the afternoon. That is exceptional, clean, heavy surf—again only for experts given the size. That Thursday is the best day in the whole 16-day window. Crowds at The Window? They’re *sometimes* around, and on a day like that, the locals will be out.
So if I had to pick just one, it’s Thursday, August 20 for the biggest, cleanest waves. Friday, August 14 is your backup—still excellent, just a bit smaller. The rest? A whole lotta wind and frustration.
Stay safe out there.
Rusty
Short Range ForecastHeavy rain (total 21mm), heaviest during Thu afternoon. Very mild (max 18°C on Thu morning, min 11°C on Fri night). Winds increasing (moderate winds from the WSW on Thu night, near gales from the WSW by Fri night). | Days 4-6 Weather SummaryModerate rain (total 17mm), heaviest on Mon night. Very mild (max 16°C on Sun afternoon, min 9°C on Mon night). Winds decreasing (gales from the SW on Mon night, moderate winds from the SW by Tue night). | ||||||||||||||||||||
Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 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 16 | WSW 16 | WSW 15 | WSW 15 | WSW 15 | WSW 14 | WSW 15 | SW 17 | SW 17 | SW 16 | SW 15 | SW 14 | SW 11 | SW 13 | SW 17 | SW 17 | SW 16 | SW 15 | SW 15 | SW 15 | SW 15 |
Wave Graph  | |||||||||||||||||||||
 kJ | 7956 | 9060 | 8487 | 7260 | 7076 | 13067 | 19575 | 24746 | 22487 | 12938 | 9286 | 4550 | 8463 | 14836 | 41951 | 30843 | 19298 | 12251 | 9354 | 8874 | 6926 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | cross-on | on | on | cross-on | cross-on | cross-on | cross-on | on | on | on | cross-on | cross-on | cross-on | cross | cross-on | cross-on | on | on | on |
High Tide | 4:37AM0.66m | 5:47AM0.72m | 6:48AM0.78m | 7:44AM0.81m | 8:35AM0.82m | 9:21AM0.80m | |||||||||||||||
Low Tide | 2:53PM0.14m | 3:14PM0.05m | 3:46PM-0.02m | 4:24PM-0.06m | 5:03PM-0.07m | 5:41PM-0.03m | 6:16PM0.03m | ||||||||||||||
 |  |  |  |  |  |  | |  | | |  | | | | |  |  | | |  | |
 | 7:07 | — | — | 7:07 | — | — | 7:05 | — | — | 7:05 | — | — | 7:03 | — | — | 7:03 | — | — | 7:01 | — | — |
 | — | 5:43 | — | — | 5:44 | — | — | 5:45 | — | — | 5:45 | — | — | 5:45 | — | — | 5:46 | — | — | 5:47 | — |
mm | 1 | 5 | 2 | — | — | 8 | 4 | 1 | — | 1 | 1 | 1 | 4 | 3 | 7 | — | — | — | — | — | — |
Temp °C | 18 | 17 | 16 | 14 | 14 | 15 | 12 | 12 | 14 | 15 | 16 | 16 | 14 | 12 | 10 | 12 | 14 | 15 | 15 | 15 | 15 |
Feels °C | 12 | 10 | 11 | 6 | 6 | 5 | 1 | 2 | 8 | 10 | 10 | 9 | 3 | 0 | -4 | 4 | 7 | 8 | 11 | 11 | 12 |
Swell 1 Height (m) Direction Period (s) | WSW 16 | WSW 16 | WSW 15 | WSW 15 | WSW 15 | — | — | — | SW 17 | SW 16 | SW 15 | SW 14 | — | — | — | — | SW 16 | SW 15 | SW 15 | SW 15 | SW 15 |
| kJ | 7956 | 9060 | 8487 | 7260 | 7076 | — | — | — | 22487 | 12938 | 9286 | 4550 | — | — | — | — | 19298 | 12251 | 9354 | 8874 | 6926 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | WSW 21 | — | SW 19 | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | 305 | — | 184 | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | WSW 14 | WSW 15 | SW 17 | — | — | — | W 7 | SW 11 | SW 13 | SW 17 | SW 17 | — | — | — | — | — |
| kJ | — | — | — | — | — | 13067 | 19575 | 24746 | — | — | — | 487 | 8463 | 14836 | 41951 | 30843 | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 231 | 260 | 15 | 363 | 363 | 2008 | 2008 | 2008 | 143 | 164 | 363 | 260 | 1089 | 2017 | 2168 | 2639 | 2639 | 15 | 3 | 21 | 15 |
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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