
Surf Forecasts:
The Window surf forecast from 3 Aug 2026:
- Most powerful swell: Saturday 8 Aug, 2PM (local time) - 18ft (5.5m), 16s period, SW swell with 16,110 kJ wave energy.
Best Forecast Surf Conditions for The Window this week:
The most powerful waves expected at The Window in the next 16 days are 5.5m 16s and forecast to arrive on Saturday (Aug 08) at 2PM. 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+) | - | - |
| Best Surf | - | - |
| Most Powerful | 2PM (Sat 8th Aug) | 18ft (5.5m) 16s |
Table - best surf conditions forecast for The Window over the next 16 days.
The Lowdown
Alright, Rusty here again, talking about The Window. This is a heavy reef, for advanced surfers only. The next two weeks are a rollercoaster of massive swell and tricky wind.
There’s a dry spell at the start. No good surf until Wednesday the 5th. Monday and Tuesday are blown out with onshore gales and junky conditions.
On Wednesday morning, the 5th of August, we get a solid 13ft groundswell from the WSW with a 16-second period. That’s a ton of energy (10,372) and a light onshore WSW breeze. It’s raw and powerful. The afternoon sees a slight northwesterly air, but it’s still cross-on. This is for the brave only; 13ft on a reef is no joke.
Thursday the 6th drops to 13ft, but a moderate northwesterly cross-onshore breeze chops it up. Big and messy.
Friday the 7th is a storm day. Westerly winds hit 22 mph, with 13ft swell and lumpy conditions. Stay on the beach.
Saturday the 8th is the first real standout. Morning brings a massive 20ft SW swell with a 16-second period – the combined energy is a staggering 15,847. The wind is a moderate southerly cross-shore, creating a bit of a cross-chop, but for a big-wave charger, this is the call. The afternoon stays big but gets cross-onshore and choppy. This is only for experts; 20ft is way beyond beginner territory.
Sunday the 9th drops to 15ft but with onshore westerly winds again. Big but not clean.
Monday the 10th is another raw day. A strong south-southwest cross-shore wind at 22 mph with a 16ft SW swell. The energy is massive (14,523) but the wind is howling.
Now, Tuesday the 11th of August is another highlight. The swell peaks at a colossal 25ft from the SW with a 17-second period (35,506 energy). The wind is a moderate southerly cross-offshore, and it’s clean. But the file says it’s predicted to be too big for this break. For a reef, 25ft is a death wish for all but the most elite tow-in surfers. It’s a spectacle, not a session.
Wednesday the 12th is where it gets really good. The swell eases to a still massive 16ft from the SW, period 16 seconds, and the wind swings to a light NNE cross-offshore. The morning is clean, and the forecast says “exceptional surf conditions for expert surfers.” This is the best paddle session of the run. The combined energy is 12,727 – powerful but manageable.
Thursday the 13th morning is a glassy gem. A light northerly breeze, 10ft SW swell, and the water is glassy. The water temp is 67°, which is a touch warmer than normal for this time of year. The window is clean and inviting for experienced surfers.
Friday the 14th brings a cross-offshore ESE breeze with a 8ft to 13ft SW swell. It’s clean, but the swell fluctuates.
Saturday the 15th is a full-on offshore day. A fresh easterly breeze at 19 mph blows offshore, grooming a 13ft WSW swell. The afternoon is even better with a moderate offshore and clean lines. This is a great day for the experts.
Sunday the 16th morning: a moderate NE cross-offshore, 15ft WSW swell, and clean. The afternoon is exceptional – a light NE breeze, 13ft swell, clean. A top pick for the second week.
Monday the 17th stays clean with a moderate NNE cross-offshore and 13ft swell. The afternoon is exceptional again.
The run ends on Tuesday the 18th with a return to cross-onshore winds and choppy, poor conditions. The 15ft swell is still there, but the wind ruins it.
The standout sessions are Wednesday the 12th morning for the best combo of size and clean offshore wind, and Saturday the 15th for the true offshore conditions. The 8th and 11th are for the extreme big-wave crew only. The Window is a serious spot, and this forecast serves it up raw.
Rusty.
Short Range ForecastModerate rain (total 18mm), heaviest on Mon night. Very mild (max 18°C on Mon afternoon, min 13°C on Mon morning). Winds decreasing (fresh winds from the SW on Mon night, light winds from the NW by Wed afternoon). | Days 4-6 Weather SummaryHeavy rain (total 26mm), heaviest during Fri morning. Very mild (max 17°C on Thu morning, min 12°C on Fri night). Winds increasing (light winds from the WNW on Thu night, strong winds from the SW by Fri night). | ||||||||||||||||||||
Monday 3 | Tuesday 4 | Wednesday 5 | Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | |||||||||||||||
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 16 | SW 15 | WSW 18 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 15 | WSW 15 | SW 14 | SW 16 | SW 16 | SW 16 | SW 16 | SW 15 | SW 14 |
Wave Graph | |||||||||||||||||||||
1254 | 1532 | 1672 | 7350 | 6347 | 4883 | 10372 | 10265 | 9301 | 7429 | 6274 | 6829 | 5712 | 7482 | 11267 | 15847 | 16066 | 13101 | 8786 | 6809 | 5796 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-on | cross-on | on | on | on | on | cross-on | cross-on | cross-on | cross-on | on | on | cross-on | cross-on | cross | cross-on | cross-on | on | on | on |
High Tide | 10:50AM0.49m | 1:49AM0.47m | 10:11AM0.40m | 2:24AM0.54m | 3:24AM0.60m | 4:37AM0.66m | 5:47AM0.72m | 6:48AM0.78m | |||||||||||||
Low Tide | 6:20PM0.26m | 7:31AM0.39m | 5:48PM0.28m | 3:22PM0.24m | 2:53PM0.14m | 3:14PM0.05m | 3:46PM-0.02m | 4:24PM-0.06m | |||||||||||||
7:11 | — | — | 7:09 | — | — | 7:09 | — | — | 7:07 | — | — | 7:07 | — | — | 7:05 | — | — | 7:05 | — | — | |
— | 5:40 | — | — | 5:42 | — | — | 5:43 | — | — | 5:43 | — | — | 5:44 | — | — | 5:45 | — | — | 5:45 | — | |
mm | — | — | 13 | — | — | — | 2 | — | 3 | — | — | 11 | 9 | 5 | 1 | — | — | — | — | — | 2 |
Temp °C | 16 | 18 | 15 | 15 | 14 | 16 | 16 | 16 | 16 | 17 | 17 | 16 | 16 | 16 | 15 | 13 | 14 | 14 | 15 | 15 | 16 |
Feels °C | 11 | 14 | 11 | 9 | 9 | 12 | 12 | 14 | 15 | 13 | 13 | 13 | 11 | 11 | 7 | 5 | 8 | 8 | 12 | 10 | 10 |
Swell 1 Height (m) Direction Period (s) | SW 15 | SW 16 | SW 15 | WSW 18 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 15 | — | — | — | SW 16 | SW 16 | SW 16 | SW 15 | SW 14 |
1254 | 1532 | 1672 | 7350 | 6347 | 4883 | 10372 | 10265 | 9301 | 7429 | 6274 | 6829 | 5712 | — | — | — | 16066 | 13101 | 8786 | 6809 | 5796 | |
Swell 2 Height (m) Direction Period (s) | S 8 | — | WSW 20 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SW 21 | SW 21 | SW 20 |
51 | — | 1056 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 664 | 458 | 634 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | NW 11 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 5 | |
Wind waves Height (m) Direction Period (s) | N 4 | NNW 4 | W 6 | — | — | — | — | — | NW 4 | — | — | — | — | WSW 15 | SW 14 | SW 16 | — | — | — | — | — |
30 | 31 | 116 | — | — | — | — | — | 24 | — | — | — | — | 7482 | 11267 | 15847 | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 61 | 69 | 260 | 858 | 363 | 213 | 3 | 15 | 74 | 156 | 231 | 156 | 213 | 631 | 2008 | 19 | 19 | 15 | 19 | 363 | 308 |
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.











