Surf Forecasts:
The Window surf forecast from 28 Aug 2026:
- Best quality surf: Saturday 29 Aug, 5PM (local time) - 10ft (3.0m), 17s period, SW swell with offshore winds.
- Most powerful swell: Sunday 30 Aug, 5AM (local time) - 10ft (3.0m), 18s period, SW swell with 6,638 kJ wave energy.
- Next surfable swell (1★+): Saturday 29 Aug, 2PM (local time) - 8ft (2.5m), 17s 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 2PM. The primary swell is predicted to be 2.5m and 17s period with a secondary swell of 0.1m and 9s. 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 3.0m 18s and forecast to arrive on Sunday (Aug 30) at 5AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 5s period and expected on Saturday (Aug 29) at 2PM.
| Wave Type | Time (AWST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2PM (Sat 29th Aug) | 8ft (2.5m) 17s |
| Best Surf | 5PM (Sat 29th Aug) | 10ft (3.0m) 17s |
| Most Powerful | 5AM (Sun 30th Aug) | 10ft (3.0m) 18s |
Table - best surf conditions forecast for The Window over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what’s coming down the line for us.
We’re looking at The Window, a solid reef setup that’s fairly exposed to the swell. Right now, the water is sitting at 65°, which is about 1° warmer than average for this time of year, so nothing too wild there.
The action starts this Saturday, the 29th of August. The morning session is clean with a moderate offshore breeze from the ESE, but the swell is a bit on the smaller side at 7ft from the SW. The real standout of the weekend is Saturday afternoon. The wind is still offshore from the E, and the swell jumps up to 10ft from the SW, with a very long 17-second period. This is some serious groundswell energy (4856), and it’s calling for experienced surfers only. The Window handles this kind of direction beautifully, but with that size, it’s not a beginner’s game.
Sunday the 30th still has plenty of size, with 10ft from the WSW all day, but the wind shifts. The morning is a cross-off from the NE, keeping it clean, but the afternoon gets a bit messy with a light cross-on from the NW. The energy is still strong (4320-6043), but the quality drops off.
After that, we hit a rough patch. From Monday the 31st right through to Friday the 4th of September, the wind goes onshore or cross-shore, and the conditions turn poor. The swell is still big, mostly 8ft to 13ft, but with strong onshore winds, it’s just a mess. There’s a period on Wednesday the 2nd where the swell drops to 13 seconds, which is a shorter period, and the energy (3416) is still solid, but the wind is just wrong. This stretch is a write-off for paddle surfing.
The weekend of the 5th and 6th of September sees the swell pump up to 13ft to 20ft, but the wind is still onshore or cross-on, and the period drops to 12-13 seconds. The energy is through the roof (6163-11728), but the conditions are poor. Honestly, if you’re a kite surfer, this might look interesting, but for a paddle surfer, it’s a no-go.
Now, we get a bit of a reprieve. Monday the 7th of September, the swell is still a solid 12ft from the SW, and the wind lightens up to a light cross-on from the WSW. The energy (5006-6119) is strong, but it’s still a bit choppy. It’s a marginal call, but it’s the best we’ve seen in a while.
Tuesday the 8th of September is a bit cleaner with a cross-off from the NNE, but the swell is still 10ft from the SW. The energy is moderate (4350-4631), and it’s clean, but the tide might be a factor.
The real standout in the second week is shaping up for Thursday the 10th of September. The afternoon session has a moderate cross-off from the SSE, with a 13ft SW swell and a 16-second period. The energy is very strong (9206), and the wind is clean. This is a promising one, but it’s a long way out, so don’t lock it in just yet.
The final weekend, the 13th of September, has a massive 16ft SW swell with a 17-second period, and the wind is a cross-off from the SSE in the afternoon. The energy is through the roof (11436), and it’s clean. This is a serious session for experts only, if the forecast holds.
So, to sum it up: the best bets are this Saturday afternoon (29th Aug) for a clean, powerful session, and keep an eye on Thursday the 10th of September and Sunday the 13th of September for some potential big-wave action. Everything else is either blown out or too big for the conditions.
This is Rusty, signing off.
Short Range ForecastLight rain (total 4mm), mostly falling on Mon night. Very mild (max 19°C on Sat afternoon, min 13°C on Sat morning). Winds increasing (calm on Sun night, fresh winds from the SSW by Mon afternoon). | Days 4-6 Weather SummaryModerate rain (total 12mm), heaviest on Thu night. Very mild (max 16°C on Wed afternoon, min 12°C on Thu night). Winds increasing (light winds from the WSW on Wed night, strong winds from the SSW by Thu night). | ||||||||||||||||||||
Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | |||||||||||||||
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) | SW 16 | SW 17 | SW 17 | WSW 17 | WSW 16 | WSW 16 | WSW 17 | WSW 16 | WSW 16 | WSW 15 | WSW 15 | SW 14 | SW 13 | SW 13 | SW 14 | WSW 14 | WSW 14 | SW 13 | SW 13 | SW 13 | SW 14 |
Wave Graph | |||||||||||||||||||||
2035 | 4856 | 5801 | 6043 | 4320 | 3116 | 3559 | 2892 | 4963 | 3331 | 3394 | 3391 | 3416 | 3365 | 4310 | 3603 | 3772 | 4800 | 4741 | 3963 | 3634 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | off | cross-off | cross-on | on | on | cross | cross-on | cross-on | on | on | on | on | on | on | on | cross-on | cross | cross-on | on |
High Tide | 10:03AM0.60m | 11:15PM0.42m | 10:30AM0.52m | 11:17PM0.48m | 10:51AM0.43m | 11:29PM0.54m | 10:36AM0.34m | 11:51PM0.60m | 00:24AM0.64m | 1:24AM0.66m | 3:50AM0.67m | ||||||||||
Low Tide | 5:11PM0.23m | 4:16AM0.31m | 5:04PM0.27m | 5:23AM0.30m | 4:46PM0.30m | 6:49AM0.30m | 3:50PM0.29m | 1:45PM0.22m | 1:47PM0.13m | 2:16PM0.05m | |||||||||||
6:43 | — | — | 6:41 | — | — | 6:39 | — | — | 6:39 | — | — | 6:37 | — | — | 6:35 | — | — | 6:35 | — | — | |
— | 5:59 | — | — | 6:00 | — | — | 6:00 | — | — | 6:00 | — | — | 6:01 | — | — | 6:02 | — | — | 6:02 | — | |
mm | — | — | — | — | — | — | — | 1 | 3 | — | — | — | 1 | — | 1 | 2 | 1 | 7 | — | — | — |
Temp °C | 16 | 19 | 15 | 17 | 18 | 17 | 18 | 18 | 14 | 14 | 14 | 15 | 15 | 16 | 15 | 15 | 16 | 16 | 11 | 13 | 13 |
Feels °C | 11 | 16 | 12 | 15 | 16 | 18 | 14 | 12 | 7 | 9 | 9 | 11 | 11 | 12 | 12 | 10 | 9 | 8 | 1 | 6 | 8 |
Swell 1 Height (m) Direction Period (s) | SW 16 | SW 17 | SW 17 | WSW 17 | WSW 16 | WSW 16 | WSW 17 | WSW 16 | WSW 16 | WSW 15 | WSW 15 | SW 14 | SW 13 | SW 13 | SW 14 | WSW 14 | — | — | SW 13 | SW 13 | SW 14 |
2035 | 4856 | 5801 | 6043 | 4320 | 3116 | 3559 | 2892 | 4963 | 3331 | 3394 | 3391 | 3416 | 3365 | 4310 | 3603 | — | — | 4741 | 3963 | 3634 | |
Swell 2 Height (m) Direction Period (s) | SW 19 | — | — | — | — | WSW 19 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
1088 | — | — | — | — | 664 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | WNW 4 | WSW 6 | — | — | — | — | — | — | — | — | WSW 14 | SW 13 | — | — | — |
— | — | — | — | — | — | 19 | 266 | — | — | — | — | — | — | — | — | 3772 | 4800 | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 2 | 0 | 0 | 2 | 19 | 15 | 314 | 363 | 3 | 15 | 15 | 55 | 363 | 363 | 19 | 363 | 363 | 363 | 2008 | 19 | 19 |
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.











