Surf Forecasts:
The Window surf forecast from 13 Aug 2026:
- Best quality surf: Friday 14 Aug, 2AM (local time) - 13ft (4.0m), 16s period, SW swell with offshore winds.
- Most powerful swell: Thursday 20 Aug, 11AM (local time) - 15ft (4.5m), 17s period, WSW swell with 12,115 kJ wave energy.
- Next surfable swell (1★+): Friday 14 Aug, 2AM (local time) - 13ft (4.0m), 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 Friday (Aug 14) at 2AM. The primary swell is predicted to be 4.0m and 16s period. 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 4.5m 17s and forecast to arrive on Thursday (Aug 20) at 11AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 5s period and expected on Sunday (Aug 16) at 2PM.
| Wave Type | Time (AWST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Fri 14th Aug) | 13ft (4.0m) 16s |
| Best Surf | 2AM (Fri 14th Aug) | 13ft (4.0m) 16s |
| Most Powerful | 11AM (Thu 20th Aug) | 15ft (4.5m) 17s |
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 cookin’ for The Window over the next couple of weeks.
Straight up, the first solid surf we’re gonna see is on Thursday the 13th of August. Don’t get too excited though – it’s a bit of a messy start. We’ve got a solid 13 ft SW swell rollin’ in, with a very long 17-second period, so there’s some serious energy in the water (8781). But the wind is a cross-on from the SSW at 6 mph, and it’s bringing a bit of chop. The water’s a touch warmer than normal at 67°F with a 3°F anomaly, so it’s a bit more tropical than usual for this time of year. This one’s really for the advanced crew only, and even then, it’s only a marginal call.
Now, Friday the 14th… that’s where we start to see the shine. Early morning, we’ve got an 12 ft SW swell, still a very long 16-second period, and the wind swings around to a cross-off from the NE at 9 mph. That’s clean conditions, and the energy is still hefty (5535). But the real standout is Friday afternoon. Glassy conditions. Wind from the NW at just 3 mph, dead flat water. The swell drops slightly to 10 ft from the SW, period 15 seconds, and the energy is a solid 4235. That’s some proper, clean, powerful groundswell. It’s still a big wave, so only for the experienced – but it’s about as good as it gets for this spot.
Saturday the 15th and Sunday the 16th are a step down. The swell drops to 8 ft and 8 ft, and the wind gets a bit stronger and more cross-off or cross-shore, making for choppy, marginal conditions. Still surfable for the dedicated, but the quality ain’t there.
Then we hit a rough patch. Monday the 17th through Wednesday the 19th is a write-off. We’re talking near gale-force winds, cross-on, blowing the whole thing out. Swells are big – 13 ft to 15 ft – but with that wind, it’s just a washing machine. This is kite-surfing territory, not paddle surfing.
Thursday the 20th of August is a bit of a wildcard. The morning has a 15 ft SW swell, very long 17-second period, and the wind is actually offshore from the WNW at 6 mph. The energy is massive (12115), and it’s been given a decent score. It’s a marginal forecast due to tide, but if you time it right, this could be a serious session for the big-wave chargers.
The next true standout pops up on Friday the 21st of August. Friday morning is glassy again. Wind from the SW at 3 mph, completely calm. You’ve got a 13 ft swell from the WSW, period 14 seconds, and energy is still strong (5870). This is another clean, powerful window for the experienced crew. The afternoon is a bit more cross-on, but still a solid option.
After that, the outlook gets patchy. Saturday the 22nd and Sunday the 23rd are blown out or choppy again. There’s a bit of a resurgence on Sunday the 23rd afternoon with a 13 ft WSW swell, but the wind is cross-shore and choppy. The following week (24th to 28th August) is a real mixed bag. Lots of big swell (12 ft to 15 ft) but constant onshore or cross-on winds, mostly strong to near gale, keeping things messy. There’s a brief window on Wednesday the 26th morning with offshore wind, but it’s only a marginal call.
The standout:
If you’ve got the skills and the patience, the best two sessions on offer are Friday afternoon the 14th of August and Friday morning the 21st of August. Both are glassy, with solid 10 ft to 13 ft SW groundswell at The Window. That’s as clean as it gets for this spot, but it’s big, so leave the foamy at home.
Remember, the longer you look out, the less certain it gets. Stay frothy, but stay smart.
Rusty.
Short Range ForecastMostly dry. Very mild (max 17°C on Sat afternoon, min 11°C on Fri morning). Wind will be generally light. | Days 5-7 Weather SummaryModerate rain (total 12mm), heaviest on Mon afternoon. Very mild (max 18°C on Sun afternoon, min 13°C on Mon afternoon). Winds decreasing (near gales from the W on Mon afternoon, light winds from the WSW by Tue morning). | |||||||||||||||||||
Thu 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | ||||||||||||||
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 17 | SW 16 | SW 16 | SW 15 | SW 14 | WSW 14 | WSW 13 | WSW 13 | WSW 14 | WSW 14 | WSW 15 | WSW 17 | WSW 16 | WSW 15 | WSW 16 | WSW 16 | WSW 15 | WSW 15 | WSW 15 | WSW 16 |
Wave Graph | ||||||||||||||||||||
8781 | 6984 | 5535 | 4235 | 3326 | 2613 | 2029 | 1682 | 3599 | 3151 | 2775 | 8846 | 8715 | 10188 | 10369 | 9939 | 6287 | 4237 | 7757 | 8899 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | off | cross-off | glassy | cross-off | cross-off | cross | cross-off | cross-off | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on |
High Tide | 10:36AM0.65m | 1:03AM0.35m | 10:57AM0.54m | 00:36AM0.41m | 10:30AM0.44m | 00:25AM0.48m | 8:39AM0.39m | 00:24AM0.53m | 00:40AM0.57m | 1:23AM0.59m | ||||||||||
Low Tide | 6:41PM0.12m | 6:45PM0.22m | 3:25AM0.34m | 6:04PM0.29m | 4:53AM0.36m | 5:04PM0.31m | 6:21AM0.38m | 4:13PM0.27m | 3:20PM0.22m | 3:07PM0.17m | ||||||||||
— | — | 7:00 | — | — | 6:58 | — | — | 6:58 | — | — | 6:56 | — | — | 6:56 | — | — | 6:54 | — | — | |
5:47 | — | — | 5:49 | — | — | 5:50 | — | — | 5:50 | — | — | 5:51 | — | — | 5:52 | — | — | 5:52 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | 3 | 4 | 2 | — | — | 1 | 2 | 3 | — |
Temp °C | 14 | 14 | 14 | 16 | 15 | 16 | 17 | 17 | 17 | 18 | 18 | 18 | 14 | 14 | 13 | 14 | 15 | 16 | 15 | 15 |
Feels °C | 12 | 11 | 11 | 14 | 14 | 13 | 14 | 16 | 12 | 13 | 15 | 12 | 3 | 3 | 7 | 9 | 8 | 8 | 9 | 10 |
Swell 1 Height (m) Direction Period (s) | SW 17 | SW 16 | SW 16 | SW 15 | SW 14 | WSW 14 | WSW 13 | WSW 13 | WSW 14 | WSW 14 | WSW 15 | WSW 17 | SW 18 | WSW 15 | WSW 16 | WSW 16 | WSW 15 | WSW 15 | WSW 15 | WSW 16 |
8781 | 6984 | 5535 | 4235 | 3326 | 2613 | 2029 | 1682 | 3599 | 3151 | 2775 | 7889 | 1571 | 10188 | 10369 | 9939 | 6287 | 4237 | 7757 | 8899 | |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | WSW 16 | SW 24 | SW 22 | WSW 19 | — | — | — | — | — | — | — | — | W 20 |
— | — | — | — | — | — | — | 886 | 142 | 480 | 1702 | — | — | — | — | — | — | — | — | 942 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | N 4 | N 5 | NNE 5 | NNE 4 | N 5 | N 4 | WSW 17 | WSW 16 | — | — | — | — | — | WSW 15 | — |
— | — | — | — | — | 21 | 16 | 7 | 29 | 59 | 20 | 8846 | 8715 | — | — | — | — | — | 6742 | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 3 | 0 | 0 | 0 | 0 | 69 | 2 | 0 | 177 | 69 | 61 | 231 | 363 | 1089 | 15 | 213 | 213 | 529 | 15 | 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.











