
Surf Forecasts:
The Window surf forecast from 5 Aug 2026:
- Best quality surf: Saturday 8 Aug, 2PM (local time) - 23ft (7.0m), 16s period, SW swell with cross-onshore winds.
- Most powerful swell: Saturday 8 Aug, 11PM (local time) - 23ft (7.0m), 17s period, SW swell with 28,368 kJ wave energy.
- Next surfable swell (1★+): Saturday 8 Aug, 2PM (local time) - 23ft (7.0m), 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 7.0m 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 7.0m 17s and forecast to arrive on Saturday (Aug 08) at 11PM. Winds are predicted to be cross-onshore at the time the swell arrives.
| Wave Type | Time (AWST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2PM (Sat 8th Aug) | 23ft (7.0m) 16s |
| Best Surf | 2PM (Sat 8th Aug) | 23ft (7.0m) 16s |
| Most Powerful | 11PM (Sat 8th Aug) | 23ft (7.0m) 17s |
Table - best surf conditions forecast for The Window over the next 16 days.
The Lowdown
Alright, folks, Rusty here. Let’s talk about what’s brewing for The Window. It’s a reef setup, built for the advanced surfer, and it catches a lot of swell. The next couple of weeks are a proper rollercoaster, but there are a couple of sessions that are gonna be magic.
The big story is a massive pulse of SW groundswell that’s gonna be hitting the coast. The problem is, for the first week, the wind is going to be a right bastard. It’s mostly onshore and cross-onshore, with fresh to strong breezes, turning everything into a lumpy, messy soup. It’s a crying shame because the swell energy is solid, with readings well over 10,000, showing moderate to strong energy, but the quality is just not there for a paddle. You’d be getting worked. From Wednesday the 5th through the weekend, conditions are poor, and the swell is too big for a beginner anyway, with heights around 13ft to 15ft, and even hitting 23ft on Saturday the 8th. The water temp is a touch warmer than normal at 67°F, about 3°F above average, so that’s something, but it won’t save you from the chop.
The absolute standout, the one to get you out of bed, is the morning of Thursday the 13th of August. Now, that’s a long way off, so take it with a little caution, but the data is telling a sweet story. The wind is going to be glassy, absolutely dead calm. The swell is still a solid 15ft from the SW, with a very long period of 17 seconds. That’s proper groundswell, and with a combined energy reading of 10795, it’s got some serious punch. For a reef break like The Window, that long period creates powerful, well-shaped waves. This is for experts only, obviously, as it’s over 8ft, but if you’ve got the nerve, this is the best session on offer. The crowd factor is “sometimes,” so you’ll have some company, but it’ll be worth it.
Before that, the morning of Wednesday the 12th of August is a decent fallback. The swell is a bit smaller at 13ft from the SW, but the wind is light, coming from the north, giving a cross-shore texture. The energy is still strong (8096), and it’s a marginal tide, but it’s a step up from the blowout.
After the 13th, things start to settle down. The morning of Friday the 14th of August has a clean, cross-offshore wind with a 13ft SW swell, but the energy is dropping. Saturday the 15th and Sunday the 16th see the swell drop to 8ft and 10ft, with gentler winds, but it’s marginal and choppy.
The tail end of the forecast, from the 17th of August onward, gets messy again with strong onshore winds, until the morning of Tuesday the 18th of August. That morning, the wind switches to a light cross-offshore from the NE, and the swell is 12ft from the WSW with a 16-second period. The energy is moderate (6211), and the conditions are “clean.” That’s another good one for experienced surfers, but it’s not the same beast as that glassy Thursday.
So, the bottom line: the first week is mostly a write-off, with a few small windows of marginal surf. The absolute standout, the one you mark on the calendar, is the morning of Thursday the 13th of August at The Window. Glassy, powerful, and long-period SW groundswell. For the more experienced crew, the morning of Tuesday the 18th of August also offers some clean, fun waves.
Rusty out.
Short Range ForecastModerate rain (total 14mm), heaviest on Thu afternoon. Very mild (max 18°C on Thu morning, min 11°C on Fri night). Winds increasing (light winds from the W on Wed morning, near gales from the SW by Fri night). | Days 4-6 Weather SummaryModerate rain (total 13mm), heaviest on Sat morning. Very mild (max 16°C on Sun afternoon, min 11°C on Sat morning). Winds decreasing (near gales from the SW on Sat morning, moderate winds from the SW by Sat night). | ||||||||||||||||||||
Wednesday 5 | Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | |||||||||||||||
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 16 | WSW 16 | WSW 16 | SW 15 | WSW 15 | WSW 15 | WSW 13 | SW 15 | SW 17 | SW 17 | SW 16 | SW 16 | WSW 14 | SW 13 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 |
Wave Graph | |||||||||||||||||||||
10240 | 10651 | 9972 | 7956 | 8132 | 8705 | 7143 | 6771 | 11449 | 18432 | 25589 | 23209 | 13196 | 9257 | 8213 | 15296 | 26449 | 21519 | 15656 | 12404 | 9035 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | cross-on | cross-on | on | cross-on | on | on | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross |
High Tide | 3:24AM0.60m | 4:37AM0.66m | 5:47AM0.72m | 6:48AM0.78m | 7:44AM0.81m | 8:35AM0.82m | |||||||||||||||
Low Tide | 3:22PM0.24m | 2:53PM0.14m | 3:14PM0.05m | 3:46PM-0.02m | 4:24PM-0.06m | 5:03PM-0.07m | 5:41PM-0.03m | ||||||||||||||
7:09 | — | — | 7:07 | — | — | 7:07 | — | — | 7:05 | — | — | 7:05 | — | — | 7:03 | — | — | 7:03 | — | — | |
— | 5:43 | — | — | 5:43 | — | — | 5:44 | — | — | 5:45 | — | — | 5:45 | — | — | 5:45 | — | — | 5:46 | — | |
mm | 1 | 2 | 1 | — | 3 | 1 | — | — | 6 | 3 | 1 | — | — | — | 5 | 1 | 2 | 1 | — | — | — |
Temp °C | 17 | 16 | 17 | 18 | 17 | 16 | 14 | 14 | 14 | 11 | 12 | 14 | 15 | 16 | 16 | 12 | 13 | 15 | 15 | 15 | 15 |
Feels °C | 14 | 13 | 12 | 12 | 11 | 11 | 8 | 5 | 5 | -1 | 2 | 9 | 10 | 10 | 9 | 3 | 4 | 7 | 9 | 9 | 10 |
Swell 1 Height (m) Direction Period (s) | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | SW 15 | WSW 15 | WSW 15 | — | — | — | SW 17 | SW 16 | SW 16 | NW 11 | — | — | — | SW 16 | SW 15 | SW 15 |
10240 | 10651 | 9972 | 7956 | 8132 | 8705 | 7143 | 6771 | — | — | — | 23209 | 13196 | 9257 | 5 | — | — | — | 15656 | 12404 | 9035 | |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | SW 21 | — | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | 224 | — | — | — | — | — | — | — | — | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | WSW 13 | SW 15 | SW 17 | — | — | — | WSW 14 | SW 13 | SW 16 | SW 16 | — | — | — |
— | — | — | — | — | — | — | — | 11449 | 18432 | 25589 | — | — | — | 8213 | 15296 | 26449 | 21519 | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 15 | 227 | 75 | 260 | 363 | 15 | 260 | 260 | 2142 | 2008 | 2008 | 19 | 21 | 363 | 363 | 858 | 2020 | 205 | 308 | 15 | 3 |
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.











