Surf Forecasts:
The Window surf forecast from 26 Aug 2026:
- Best quality surf: Sunday 30 Aug, 5AM (local time) - 10ft (3.0m), 19s period, SW swell with offshore winds.
- Most powerful swell: Thursday 27 Aug, 8AM (local time) - 13ft (4.0m), 16s period, SW swell with 7,945 kJ wave energy.
- Next surfable swell (1★+): Saturday 29 Aug, 8AM (local time) - 4.5ft (1.4m), 19s 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 8AM. The primary swell is predicted to be 1.4m and 19s period with a secondary swell of 1.5m and 12s. 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 4.0m 16s and forecast to arrive on Thursday (Aug 27) at 8AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 5s period and expected on Friday (Aug 28) at 5PM.
| Wave Type | Time (AWST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Sat 29th Aug) | 4.5ft (1.4m) 19s |
| Best Surf | 5AM (Sun 30th Aug) | 10ft (3.0m) 19s |
| Most Powerful | 8AM (Thu 27th Aug) | 13ft (4.0m) 16s |
Table - best surf conditions forecast for The Window over the next 16 days.
The Lowdown
Alright, let’s get into it. The Window’s been doing its thing, and we’ve got a proper mixed bag coming up over the next couple of weeks. There’s plenty of swell to talk about, but the wind’s going to be the real story here. We’ll have some magic windows, but also some proper blown-out days where you’ll want to stay on the beach with a coffee.
Right now, starting Thursday, August 27th, the swell is pumping. We’re looking at a solid 13.1ft SW groundswell with a long 15-second period, which cranks the energy up to 6486 (moderate to strong). The water’s sitting at 65.3°, which is a touch warmer than normal for this time of year. But here’s the kicker: the wind is a fresh SSE cross-off at 19 mph. It’s clean, but that’s a strong breeze, and with that much power, The Window is an advanced-only zone. This is no place for beginners; anything over 5ft is expert territory, and 13.1ft is a proper handful. The Window is a reef, and with that long period, it’ll be lining up, but you need to know what you’re doing.
Friday, August 28th, the swell drops a notch to 7.5ft in the morning, still SW, with a 12-second period. The wind swings SE at 12 mph, cross-off, so it’s still clean. The energy drops to 1527, which is moderate. Afternoon drops further to 5.9ft, but the wind picks up again. It’s still surfable, but nothing to write home about.
Now, Saturday, August 29th, is where it gets interesting. Morning brings a 6.6ft SW swell, but the period jumps to 16 seconds – that’s a lovely long groundswell. The wind is offshore from the ESE at 12 mph, moderate breeze, and the conditions are clean. The energy is 2992. This is the best-looking window of the early part of the forecast. The swell is big enough to get into, but not out of control. The offshore wind will groom it beautifully. The afternoon builds to 9.8ft with a 17-second period (4856 energy), but the wind goes cross-off from the NE, still light. It’ll still be good, but that morning session is the standout.
Sunday, August 30th, has a similar 9.8ft swell, WSW, with 17-second periods in the morning. The wind is still a light NE cross-off, 9 mph. It’s clean. The energy is huge at 6043. By the afternoon, the wind goes light cross-on from the NNW, which will start to put a bit of a bump on the face. The morning is still the pick.
Then we hit a wall. From Monday, August 31st, right through to the end of the first week of September, the wind goes onshore and strong. Westerly winds at 16 to 22 mph, right on the nose, turning this powerful swell into a washing machine. We’ve got solid 9.8ft to 14.8ft SW swell during this period, but the energy is massive (think 7000+), and it’s all blown out. For a reef like The Window, this is a no-go for a paddle board. If you’re into kiting, this setup might be your thing, but for surfing, it’s a skip.
The wind finally backs off a bit on Friday, September 4th, but it’s still cross and cross-on, with a messy 9.8ft swell. The quality is poor.
The light at the end of the tunnel comes on Monday, September 7th. The morning is looking proper. We’ve got a 11.5ft SW swell with a 15-second period, and the wind is offshore from the ENE at a light 6 mph. The energy is 5228, and the conditions are clean. This is the second standout of the forecast. The offshore wind on a big, long-period SW groundswell at The Window is what dreams are made of. This is for experienced surfers only, but it’ll be firing. The afternoon gets a bit lumpy with a cross-shore wind, so get in early.
After that, Tuesday and Wednesday look onshore and messy again, with the wind picking up from the west. The swell stays around 8.2ft to 9.8ft, but it’s not worth the paddle. By Thursday, September 10th, we’ve got a strong breeze, near gale-force winds, and rain. That’s a hard pass.
The last glimpse of hope is Friday, September 11th, but it’s a fresh cross-onshore wind with a 8.2ft WSW swell. It’s lumpy and not for the faint of heart.
So, to sum it up: the best windows are Saturday morning, August 29th (offshore, 6.6ft, 16s) and Monday morning, September 7th (offshore, 11.5ft, 15s). The rest is a battle with the wind. The Window is a reef, so respect the crowds – they can be there sometimes, especially on the good days. The long period swells will make it perfect for this point
Short Range ForecastMostly dry. Very mild (max 19°C on Sat afternoon, min 10°C on Thu night). Winds decreasing (fresh winds from the SSE on Thu afternoon, light winds from the E by Sat afternoon). | Days 4-6 Weather SummarySome drizzle, heaviest during Mon night. Warm (max 20°C on Sun afternoon, min 12°C on Mon night). Winds increasing (calm on Sun night, fresh winds from the W by Mon afternoon). | ||||||||||||||||||||
Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | |||||||||||||||
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 15 | SW 14 | SW 13 | SW 12 | SW 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 | SW 14 | WSW 14 | WSW 14 | WSW 15 |
Wave Graph | |||||||||||||||||||||
6486 | 5216 | 2733 | 1500 | 902 | 512 | 1904 | 4856 | 5733 | 6043 | 4579 | 3417 | 1647 | 2999 | 4761 | 3361 | 2948 | 3017 | 4936 | 4724 | 6885 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | cross-off | off | cross-off | cross-on | on | on | on | cross | on | on | on | on | on | on |
High Tide | 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 | 00:24AM0.64m | ||||||||
Low Tide | 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 | 1:45PM0.22m | |||||||||
6:45 | — | — | 6:43 | — | — | 6:43 | — | — | 6:41 | — | — | 6:39 | — | — | 6:39 | — | — | 6:37 | — | — | |
— | 5:58 | — | — | 5:59 | — | — | 5:59 | — | — | 6:00 | — | — | 6:00 | — | — | 6:00 | — | — | 6:01 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | 1 | — | — |
Temp °C | 15 | 15 | 12 | 13 | 18 | 13 | 15 | 19 | 16 | 18 | 20 | 18 | 18 | 18 | 13 | 13 | 15 | 15 | 16 | 16 | 16 |
Feels °C | 8 | 7 | 6 | 8 | 13 | 8 | 11 | 17 | 12 | 16 | 18 | 18 | 14 | 12 | 8 | 9 | 10 | 9 | 11 | 11 | 10 |
Swell 1 Height (m) Direction Period (s) | SW 15 | SW 14 | SW 13 | SW 12 | SW 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 | SW 14 | WSW 14 | WSW 14 | WSW 15 |
6486 | 5216 | 2733 | 1500 | 902 | 512 | 1904 | 4856 | 5733 | 6043 | 4579 | 3417 | 1647 | 2999 | 4761 | 3361 | 2948 | 3017 | 4936 | 4724 | 6885 | |
Swell 2 Height (m) Direction Period (s) | — | — | W 21 | S 8 | SW 20 | SW 18 | SW 19 | — | — | — | — | WSW 20 | WSW 17 | — | — | — | — | — | — | — | — |
— | — | 9 | 11 | 60 | 255 | 1088 | — | — | — | — | 407 | 1543 | — | — | — | — | — | — | — | — | |
Swell 3 Height (m) Direction Period (s) | — | — | — | SW 20 | WSW 24 | WSW 21 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
— | — | — | 16 | 54 | 302 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | S 7 | SSE 6 | — | S 5 | SSE 6 | — | — | — | — | — | — | W 5 | WSW 7 | — | — | — | — | — | — | — |
— | 414 | 176 | — | 85 | 60 | — | — | — | — | — | — | 61 | 407 | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 78 | 143 | 3 | 3 | 3 | 3 | 0 | 2 | 0 | 2 | 69 | 15 | 363 | 363 | 3 | 19 | 363 | 363 | 363 | 2623 | 260 |
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.











