Surf Forecasts:
The Window surf forecast from 19 Jul 2026:
- Best quality surf: Wednesday 22 Jul, 11AM (local time) - 11ft (3.5m), 16s period, SW swell with offshore winds.
- Most powerful swell: Monday 27 Jul, 2AM (local time) - 15ft (4.5m), 15s period, SW swell with 8,775 kJ wave energy.
- Next surfable swell (1★+): Wednesday 22 Jul, 2AM (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 Wednesday (Jul 22) at 2AM. 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 4.5m 15s and forecast to arrive on Monday (Jul 27) at 2AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 5s period and expected on Friday (Jul 24) at 11AM.
| Wave Type | Time (AWST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Wed 22nd Jul) | 8ft (2.5m) 13s |
| Best Surf | 11AM (Wed 22nd Jul) | 11ft (3.5m) 16s |
| Most Powerful | 2AM (Mon 27th Jul) | 15ft (4.5m) 15s |
Table - best surf conditions forecast for The Window over the next 16 days.
The Lowdown
G’day, Rusty here. We’ve got a solid run of waves at The Window over the next couple of weeks, but it’s a tale of two halves: the first few days are a bit average with onshore wind and messy conditions, then we get a standout window of excellent, clean surf right in the middle of the outlook. Let’s go through it.
We kick off Monday 20 July morning with a solid 8ft SW swell, but the wind is onshore from the WSW at 9 mph and conditions are marginal. Combined wave energy is strong (1542). Not worth paddling out – the afternoon gets worse with a W wind at 16 mph and poor conditions. Tuesday 21 July sees the swell holding around 8ft to 8ft from the SW, but the wind is cross or cross-off and chop is still moderate. Combined energy is very strong (2121 to 2154). Still not the best, but Tuesday afternoon turns clean with a cross-off breeze – surfable but not stellar.
Now for the highlight. Wednesday 22 July morning is where it’s at: 12ft SW groundswell with a period of 16 seconds – that’s very long, so better suited to a reef like The Window. The wind is offshore from the ESE at 9 mph, gentle and clean. Combined wave energy is extreme (8002). This is genuinely exceptional surf for experts – the size is over 8ft, so only competent surfers will be out there. The morning is the standout of the whole outlook. If you want glassy conditions, Thursday 23 July afternoon is also excellent: 7ft SW swell, light NE breeze at 6 mph, clean, combined energy strong (1647). Crowds are possible at The Window – it’s fairly consistent and sometimes packed, but with these conditions it’ll be worth sharing a few waves.
Thursday 24 July morning is clean but the swell drops to 5ft – still fun, combined energy moderate (787). Friday 24 July afternoon keeps the clean 5ft SW swell and very good conditions, combined energy 891. Saturday 25 July is a write-off: strong cross-onshore and huge lumpy 12ft windswell – that’s kite territory, not paddling. Sunday 26 July is even worse: 13ft+ SW swell, strong onshore wind at 28 mph, combined energy up to 7823 – total mess.
Moving into the second week, Monday 27 July still has big 13ft SW swell with cross chop, combined energy extreme (6115). Not recommended. But then Tuesday 28 July and Wednesday 29 July offer another excellent pocket: Tuesday morning sees 8ft SW swell, light ESE cross-off at 6 mph, clean, combined energy strong (1916). Wednesday 29 July afternoon is glassy – zero wind, 6ft SW groundswell with a 15-second period, combined energy strong (1437). This is smooth, clean reef surfing for experienced surfers. Thursday 30 July the swell drops off to 4ft to 3ft – marginal but clean, combined energy moderate (700-1011). Friday 31 July morning has a building 7ft WSW swell with a fresh cross-off breeze and clean conditions, combined energy very strong (2571), but the afternoon turns messy with a strong cross breeze and rain. Saturday 1 August is marginal with risk of thunderstorms and 6ft WSW swell, combined energy moderate (1255-1525). Sunday 2 August is lumpy cross-shore with 8-8ft WSW swell, combined energy strong (2360-2444). Then Monday 3 August morning brings clean conditions again: 8ft SW swell, light SSE cross-off at 6 mph, excellent for experienced surfers, combined energy strong (2349). Tuesday 4 August morning has easing 5ft SSW swell with a light cross-off breeze and very good conditions, combined energy moderate (949).
The water temperature is about average for the time of year.
-Rusty
Short Range ForecastLight rain (total 4mm), mostly falling on Mon night. Very mild (max 16°C on Wed afternoon, min 13°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Very mild (max 18°C on Sat afternoon, min 10°C on Thu morning). Winds increasing (light winds from the NE on Thu afternoon, fresh winds from the NNW by Sat afternoon). | ||||||||||||||||||
Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | ||||||||||||||
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 13 | SW 11 | SW 14 | SW 13 | SW 12 | SW 13 | SW 13 | SW 16 | SW 15 | SW 14 | SW 14 | SW 13 | SW 13 | SW 12 | SW 12 | SW 12 | WSW 13 | WSW 8 | SW 11 |
Wave Graph  | |||||||||||||||||||
 kJ | 2309 | 1452 | 1918 | 1969 | 1749 | 2154 | 2180 | 5058 | 4430 | 3436 | 2229 | 1591 | 1127 | 700 | 695 | 551 | 812 | 1503 | 4291 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | cross | cross | cross-off | cross-off | off | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross-on | cross-on |
High Tide | 4:44AM0.45m | 8:19AM0.46m | 4:20AM0.51m | 4:44AM0.57m | 5:22AM0.61m | 6:05AM0.65m | 6:48AM0.68m | ||||||||||||
Low Tide | 5:55AM0.45m | 5:25PM0.27m | 4:18PM0.21m | 4:05PM0.16m | 4:15PM0.12m | 4:32PM0.09m | 4:53PM0.07m | ||||||||||||
 |  |  |  | | |  | | |  |  | | | | | | | |  | |
 | — | 7:20 | — | — | 7:20 | — | — | 7:18 | — | — | 7:18 | — | — | 7:18 | — | — | 7:16 | — | — |
 | 5:30 | — | 5:31 | — | — | 5:32 | — | — | 5:32 | — | — | 5:34 | — | — | 5:34 | — | — | 5:35 | — |
mm | — | — | — | 4 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 8 |
Temp °C | 15 | 15 | 15 | 15 | 15 | 14 | 14 | 13 | 16 | 14 | 11 | 14 | 14 | 13 | 14 | 15 | 17 | 18 | 18 |
Feels °C | 12 | 10 | 9 | 10 | 10 | 9 | 10 | 10 | 13 | 10 | 6 | 11 | 10 | 8 | 10 | 13 | 10 | 10 | 11 |
Swell 1 Height (m) Direction Period (s) | SW 13 | SW 11 | SW 14 | SW 13 | SW 12 | SW 13 | SW 13 | SW 16 | SW 15 | SW 14 | SW 14 | SW 13 | SW 13 | SW 12 | SW 12 | SW 12 | WSW 13 | SW 17 | — |
| kJ | 2309 | 1452 | 1918 | 1969 | 1749 | 2154 | 2180 | 5058 | 4430 | 3436 | 2229 | 1591 | 1127 | 700 | 695 | 551 | 812 | 186 | — |
Swell 2 Height (m) Direction Period (s) | — | SW 16 | — | — | WSW 15 | — | — | SW 16 | — | — | W 20 | W 18 | WSW 18 | WSW 16 | W 15 | WSW 15 | SW 18 | — | — |
| kJ | — | 90 | — | — | 372 | — | — | 2944 | — | — | 7 | 25 | 60 | 87 | 119 | 222 | 49 | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | WSW 18 | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | 31 | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | NE 5 | NNE 5 | NNE 4 | N 5 | N 6 | NNW 5 | NW 6 | WSW 8 | SW 11 |
| kJ | — | — | — | — | — | — | — | — | — | — | 25 | 21 | 13 | 65 | 77 | 56 | 310 | 1503 | 4291 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 3 | 19 | 78 | 3 | 3 | 3 | 0 | 0 | 3 | 0 | 2 | 0 | 2 | 61 | 0 | 61 | 171 | 231 | 485 |
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.
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