
Surf Forecasts:
The Window surf forecast from 18 Jul 2026:
- Best quality surf: Sunday 19 Jul, 11PM (local time) - 8ft (2.5m), 13s period, SW swell with cross-offshore winds.
- Most powerful swell: Sunday 19 Jul, 5AM (local time) - 11ft (3.5m), 14s period, WSW swell with 5,387 kJ wave energy.
- Next surfable swell (1★+): Sunday 19 Jul, 11PM (local time) - 8ft (2.5m), 13s 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 Sunday (Jul 19) at 11PM. The primary swell is predicted to be 2.5m and 13s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at The Window in the next 16 days are 3.5m 14s and forecast to arrive on Sunday (Jul 19) at 5AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 4s period and expected on Thursday (Jul 23) at 11AM.
| Wave Type | Time (AWST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Sun 19th Jul) | 8ft (2.5m) 13s |
| Best Surf | 11PM (Sun 19th Jul) | 8ft (2.5m) 13s |
| Most Powerful | 5AM (Sun 19th Jul) | 11ft (3.5m) 14s |
Table - best surf conditions forecast for The Window over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s get into it.
The next couple of weeks are a bit of a mixed bag. We’re starting with a solid run of swell, but the wind is going to be a major factor, especially early on. The real standout window is further out, so don’t be disheartened if the first few days look a bit rough.
The Window is our only real option on the table, a tricky reef setup for advanced surfers only. It’s a fairly consistent spot, but it can get crowded. The water temp is about average for the time of year.
We kick off this Sunday the 19th with a chunky 10 ft SW groundswell (14 seconds), but the 12 mph cross-onshore wind is going to mess it up. The combined swell energy is pretty hefty (3929), but it’s going to be choppy and messy. Not a good look.
Monday the 20th sees the swell drop a little to 8 ft, and the wind shifts onshore from the WSW. It’s clean but the wind is on it, and the quality is poor. A pass.
Tuesday the 21st is still marginal. The swell hangs around 8 ft, but we’ve got cross-shore winds. It’s not going to be clean.
Now, Wednesday the 22nd is a bright spot. The morning looks clean with a light offshore breeze from the East and a solid 10 ft SW groundswell. The energy is strong (3469). This is the best early call for experienced surfers at The Window. The afternoon? The wind goes onshore and the swell period jumps to 15 seconds – that’s some long-period groundswell, but the wind will ruin it for the reef.
Thursday the 23rd is another good one. The morning is clean with a cross-offshore breeze and 8 ft swell. The afternoon is even better: light cross-offshore wind, 7 ft swell, and clean conditions. If you’re looking for a good session, Thursday afternoon is your pick.
Friday the 24th is a write-off with strong cross-shore winds and dropping swell. Saturday the 25th and Sunday the 26th are a complete mess with fresh cross-onshore winds and lumpy, poor surf. Don’t bother.
The rollercoaster continues. Monday the 27th and Tuesday the 28th see a return of cleaner conditions. Tuesday afternoon the 28th is a real gem: light cross-offshore wind, 8 ft swell, and clean conditions. The swell is getting a bit smaller by Tuesday the 28th afternoon (4 ft), but the period is a massive 20 seconds – that’s a very long groundswell, perfect for the reef. The energy is still decent (2837).
Wednesday the 29th is blown out again by strong winds. Thursday the 30th is small and clean, but not much to write home about.
Now, the big one. Friday the 31st of July morning is looking glassy. The wind is from the East at just 3 mph, practically nothing. The swell is 8 ft from the WSW with a 16-second period and a massive energy reading (3142). This is a top-tier call for The Window for experienced surfers. That glassy morning is the pick of the first week.
But the absolute standout is Saturday the 1st of August. The morning is clean with a light cross-offshore breeze and a massive 16 ft WNW swell. The energy is off the charts (4897). That’s big. Then the afternoon goes glassy with a 13 ft swell. This is for experts only, but it’s going to be a memorable session.
And then, Sunday the 2nd of August. The morning is glassy again, with a 13 ft WSW swell and a period of 16 seconds. The combined energy reading is a staggering 11124. That is exceptional. This is the best on offer in the whole outlook. For expert surfers only, but it’s a once-in-a-while morning. The afternoon gets a bit of a cross-onshore, so get it early.
Monday the 3rd of August has a solid 12 ft swell, but the wind is onshore, making it marginal.
So, to sum it up: the best windows are Thursday the 23rd afternoon, Friday the 31st morning, and the absolute standout is the glassy morning of Sunday the 2nd of August. That’s the one to circle on the calendar.
Rusty.
Short Range ForecastLight rain (total 6mm), mostly falling on Sun morning. Very mild (max 16°C on Sat night, min 14°C on Sun morning). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Very mild (max 17°C on Fri afternoon, min 11°C on Thu morning). Wind will be generally light. | ||||||||||||||||||
Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | ||||||||||||||
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 15 | WSW 14 | WSW 13 | SW 13 | SW 11 | SW 14 | SW 13 | SW 14 | SW 13 | SW 13 | SW 13 | SW 15 | SW 14 | SW 14 | SW 13 | SW 12 | SW 12 | SW 12 | WSW 12 |
Wave Graph | |||||||||||||||||||
6541 | 3929 | 2860 | 2309 | 1478 | 1787 | 2088 | 2686 | 2121 | 2467 | 2775 | 4234 | 3094 | 1948 | 1417 | 1118 | 899 | 880 | 988 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | cross-on | glassy | on | on | cross | cross | cross | cross-off | off | on | off | cross-off | cross-off | cross-off | cross | cross | cross-on |
High Tide | 9:40AM0.48m | 4:44AM0.45m | 8:19AM0.46m | 4:20AM0.51m | 4:44AM0.57m | 5:22AM0.61m | 6:05AM0.65m | ||||||||||||
Low Tide | 8:14PM0.27m | 6:29PM0.30m | 5:55AM0.45m | 5:25PM0.27m | 4:18PM0.21m | 4:05PM0.16m | 4:15PM0.12m | 4:32PM0.09m | |||||||||||
— | 7:20 | — | — | 7:20 | — | — | 7:20 | — | — | 7:18 | — | — | 7:18 | — | — | 7:18 | — | — | |
5:30 | — | 5:30 | — | — | 5:31 | — | — | 5:32 | — | — | 5:32 | — | — | 5:34 | — | — | 5:34 | — | |
mm | — | 3 | — | — | — | — | 3 | — | — | — | — | — | — | — | — | — | — | — | 2 |
Temp °C | 16 | 15 | 16 | 14 | 15 | 15 | 16 | 15 | 14 | 13 | 14 | 15 | 15 | 12 | 13 | 14 | 16 | 17 | 18 |
Feels °C | 9 | 11 | 11 | 11 | 10 | 10 | 11 | 10 | 9 | 9 | 11 | 14 | 12 | 8 | 9 | 12 | 11 | 13 | 14 |
Swell 1 Height (m) Direction Period (s) | WSW 15 | WSW 14 | WSW 13 | SW 13 | SW 11 | SW 14 | SW 13 | SW 14 | SW 13 | SW 13 | SW 13 | SW 15 | SW 14 | SW 14 | SW 13 | SW 12 | SW 12 | SW 12 | WSW 12 |
6541 | 3929 | 2860 | 2309 | 1478 | 1787 | 2088 | 2686 | 2121 | 2467 | 2775 | 4234 | 3094 | 1948 | 1417 | 1118 | 899 | 880 | 988 | |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | SW 16 | — | — | — | — | — | SW 16 | — | — | W 20 | W 18 | WSW 18 | WSW 16 | W 16 | W 15 |
— | — | — | — | 90 | — | — | — | — | — | 694 | — | — | 7 | 25 | 60 | 87 | 126 | 110 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | NE 4 | NNE 4 | N 4 | N 3 | NNW 4 | NW 5 |
— | — | — | — | — | — | — | — | — | — | — | — | — | 6 | 6 | 3 | 5 | 16 | 74 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 260 | 15 | 15 | 0 | 19 | 78 | 3 | 3 | 3 | 0 | 0 | 3 | 0 | 2 | 0 | 0 | 61 | 69 | 69 |
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.










