The Window surfForecast / WA – Margaret River / Australia

information circle16 Day Weather and Surf, issued 7 am Thursday 21 May 2026 AWST
Forecast update in hr  min  s Forecast update imminent
The Window surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's The Window sea temperature is
20.9° C
(Which is slightly warmer than usual)

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 (May 22) at 11PM. The primary swell is predicted to be 2.3m and 12s 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 10s and forecast to arrive on Thursday (May 28) 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 2.5m 7s period and expected on Wednesday (May 27) at 8PM.

Wave TypeTime (AWST) & Date Wave Height & Period
Next good surf (1 star+)11PM (Fri 22nd May)7.5ft (2.3m) 12s
Best Surf11PM (Fri 22nd May)7.5ft (2.3m) 12s
Most Powerful11AM (Thu 28th May)15ft (4.5m) 10s

Table - best surf conditions forecast for The Window over the next 16 days.


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Light rain (total 3mm), mostly falling on Thu morning. Very mild (max 18°C on Thu morning, min 11°C on Sat morning). Winds decreasing (fresh winds from the SSW on Thu afternoon, calm by Sat night).

Days 4-6 Weather Summary

Mostly dry. Warm (max 20°C on Mon night, min 11°C on Sun morning). Winds increasing (light winds from the NE on Sun night, fresh winds from the NNE by Mon morning).

Thursday
21
Friday
22
Saturday
23
Sunday
24
Monday
25
Tuesday
26
Wednesday
27
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
1
3
3
3
3
2
2
2
4
3
1
0
1
0
2
1
1
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
3
SW
14
2.5
WSW
13
2.5
SW
13
2.4
SW
13
2.4
SW
12
2.2
SW
12
2
SW
12
1.7
WSW
12
1.2
SW
11
1.3
WSW
14
1.7
WSW
13
1.5
WSW
13
1.7
WSW
15
1.7
WSW
14
1.4
WSW
13
1.3
WSW
13
1.3
WSW
18
1.8
WSW
16
2.2
WSW
16
2.4
W
15
1.8
WSW
14
Wave Graph
Metric surfscale
Energy kJ
3060
2394
2310
1892
1693
1324
1094
756
347
647
1077
679
1275
1175
669
512
1143
1676
2338
2508
1267
Wind (km/h)
25
SSW
30
SSW
25
S
15
S
20
SSE
10
E
10
NE
10
NW
15
ENE
15
NNE
10
NNE
15
NE
30
NNE
25
N
20
N
25
N
20
N
30
N
30
NNW
45
N
50
WNW
cross-on
cross-on
cross
cross-off
cross-off
off
cross-off
cross-on
off
cross-off
cross-off
cross-off
cross-off
cross
cross
cross
cross
cross
cross
cross
cross-on
High Tide
11:25AM0.72m
11:16AM0.63m
10:43AM0.56m
10:03AM0.51m
4:24PM0.42m
8:42AM0.50m
7:04PM0.35m
7:46AM0.54m
7:38AM0.60m
Low Tide
00:06AM0.05m
00:48AM0.12m
1:14AM0.20m
4:00PM0.42m
1:20AM0.28m
3:49PM0.33m
11:51PM0.34m
4:13PM0.26m
4:39PM0.20m
rain showers
light rain
rain showers
clear
clear
part cloud
cloud
clear
clear
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
cloud
part cloud
part cloud
cloud
light rain
thunderstorm
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:07
7:09
7:09
7:09
7:11
7:11
7:11
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:23
5:22
5:22
5:22
5:22
5:21
5:21
1
1
1
4
15
Temp °C
18
17
17
16
17
15
13
14
14
14
15
16
18
19
20
20
20
20
20
19
19
16
12
11
11
11
12
10
12
14
10
11
12
12
14
17
17
16
17
16
13
12
Swell 1
Height (m)
Direction
Period (s)
3
SW
14
2.5
WSW
13
2.5
SW
13
2.4
SW
13
2.4
SW
12
2.2
SW
12
2
SW
12
1.7
WSW
12
1.2
SW
11
1.3
WSW
14
1.7
WSW
13
1.5
WSW
13
1.7
WSW
15
1.7
WSW
14
1.4
WSW
13
1.3
WSW
13
1.4
WSW
12
1.8
WSW
16
2.2
WSW
16
2.4
W
15
1.8
WSW
14
Energy kJ
3060
2394
2310
1892
1693
1324
1094
756
347
647
1077
679
1275
1175
669
512
548
1676
2338
2508
1267
Swell 2
Height (m)
Direction
Period (s)
0.1
SW
18
0.6
S
9
0.6
S
8
0.9
SW
11
0.7
S
11
0.9
WSW
16
0.3
S
10
0.2
S
9
0.7
W
10
0.7
WSW
20
1.3
WSW
18
1.1
W
10
1.1
W
9
Energy kJ
13
56
46
163
110
407
17
7
102
403
1143
233
196
Swell 3
Height (m)
Direction
Period (s)
0.1
SW
18
0.2
SSW
14
0.6
WSW
16
0.8
S
11
0.5
WSW
18
0.5
S
10
0.1
W
23
0.5
W
8
1
W
10
0.8
SW
12
0.5
SW
11
Energy kJ
13
19
171
146
182
50
10
32
206
184
64
Wind waves
Height (m)
Direction
Period (s)
1.3
SSW
6
0.5
NE
3
0.5
N
4
0.5
N
4
1.3
N
5
1.4
N
6
1.2
NNW
6
1.2
NNW
5
1.2
NNW
6
1.2
NNW
6
1.3
NNW
6
2.1
NNW
6
3
WNW
8
Energy kJ
107
6
8
9
88
132
94
84
97
84
100
350
1030
Nearest Offshore or Glassy
Rating
(10 max)
5
4
2
4
4
3
3
3
2
3
4
3
4
3
3
4
4
4
4
4
3
Distance (km)
15
631
55
3
3
0
0
18
0
20
0
0
69
69
69
61
69
69
171
157
260
Best forecast wave conditions in Margaret River
Rating
(10 max)
5
4
4
4
4
3
3
4
4
4
4
3
3
4
4
4
Best forecast wave conditions in Australia
Rating
(10 max)
5
4
4
4
7
5
4
4
7
7
4
4
4
4
4
5
5
4
4
4
4
Header Global
Rating
(10 max)
5
5
5
4
7
6
6
7
8
7
5
5
4
4
4
5
5
5
5
5
5
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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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