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Surf Forecasts:

Grunters surfForecast / WA – Margaret River / Australia

information circle12 Day Weather and Surf, issued 1 am Sunday 07 Sep 2025 AWST
Forecast update in hr  min  s Forecast update imminent
Grunters surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Grunters sea temperature is
18.0° C
 (Which is slightly warmer than usual)

Best Forecast Surf Conditions for Grunters this week:

The surf forecast for Grunters over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Sep 08) at 2AM. The primary swell is predicted to be 5.0m and 19s period. The wind is predicted to be cross-onshore as the swell arrives.

The most powerful waves expected at Grunters in the next 12 days are 5.0m 19s and forecast to arrive on Monday (Sep 08) 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 2.0m 6s period and expected on Friday (Sep 12) at 8AM.

Wave TypeTime (AWST) & Date Wave Height & Period
Next good surf (1 star+) 2AM (Mon 8th Sep)16ft (5.0m) 19s
Best Surf 2AM (Mon 8th Sep)16ft (5.0m) 19s
Most Powerful 2AM (Mon 8th Sep)16ft (5.0m) 19s

Table - best surf conditions forecast for Grunters over the next 12 days.

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table

Short Range Forecast Moderate rain (total 11mm), heaviest on Sun morning. Very mild (max 13°C on Tue afternoon, min 10°C on Sun night). Winds decreasing (fresh winds from the SSW on Sun morning, light winds from the SW by Tue afternoon).

Days 3-6 Weather Summary Light rain (total 8mm), mostly falling on Fri night. Warm (max 20°C on Fri afternoon, min 10°C on Wed morning). Winds increasing (calm on Wed night, strong winds from the N by Fri morning).

Sunday
07
Monday
08
Tuesday
09
Wednesday
10
Thursday
11
Friday
12
Saturday
13
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
0
0
!
0
7
5
4
3
4
4
3
4
3
3
2
1
0
0
0
0
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
4
SW
4
SW
5
SW
4.5
SW
4
SW
3
SW
2.4
SW
2.1
SW
1.6
SW
1.8
SW
2.4
SW
2.4
SW
2.5
WSW
2.5
WSW
2.5
WSW
2.2
WSW
1.9
WSW
3.5
WSW
4
WSW
4
W
6
WSW
Period(s) (?)141119171716151414161413161515141413131212
Wave
Graph
(?)Metric surfscale
Energy (?)647861851652812327924249052731202911331719235321652962284426552416191434624709431910157
Wind
(km/h)
35
SSW
35
SSW
35
SSW
25
S
20
SSE
10
ENE
10
NNE
5
SW
15
E
15
N
10
NW
10
E
15
N
20
NNE
25
NE
40
N
40
NW
30
W
40
WNW
40
W
50
W
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on		cross-
on		cross-
on		cross-
on		crossoffcross-
off		cross-
on		cross-
off		cross-
off		cross-
on		offcross-
off		cross-
off		cross-
off		cross-
off		crosscross-
on		cross-
on		cross-
on		on
High Tide
/ height (m)
9:31AM
0.70
11:11PM
0.39
10:15AM
0.63
11:07PM
0.44
11:01AM
0.53
11:09PM
0.52
11:55AM
0.41
11:17PM
0.59
11:32PM
0.65
11:56PM
0.69
12:35AM
0.69
Low Tide
/ height (m)
5:10PM
0.17
3:22AM
0.31
5:16PM
0.24
4:32AM
0.29
5:04PM
0.32
5:50AM
0.27
4:15PM
0.35
8:00AM
0.26
12:40PM
0.16
1:31PM
0.07
Sunday
07
Monday
08
Tuesday
09
Wednesday
10
Thursday
11
Friday
12
Saturday
13
Sunrise6:31--6:30--6:28--6:26--6:26--6:24--6:22--
Sunset-6:05--6:06--6:06--6:07--6:07--6:07--6:08-
rain showers
light rain
light rain
part cloud
cloud
part cloud
part cloud
part cloud
clear
clear
clear
clear
clear
clear
part cloud
part cloud
rain showers
rain showers
rain showers
rain showers
rain showers
Rain (mm)
524-------------17138
Temp. °C121111111212121312141414151716192018161514
Feels °C (?)432468999111113111313111312774
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder

Eyeball surf reportRecent Eyeball Surf Reports for WA - Margaret River

  1. weather stationWind Update Onshore wind has changed to cross-on at Grunters (moderate winds from the W at Witchcliffe 10 km from Grunters). 3.8m 12s groundswell from the SW with a 1.5m 21s long period groundswell from the WSW. 2 swells combining so expect closeout sets.

    39 minutes ago Grunters
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Actual: 39 min ago

20 km/h
W
Cross-On
Please reload the page to see if there are any updates.

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Grunters surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.

View detailed surf forecast for Grunters at:
surf-forecast.com

Information about the Grunters Surf forecast

The above surf forecast table for Grunters provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Grunters can be found by selecting the local surf guide option on the grey menu. Our Grunters 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 (Grunters) 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 Grunters 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.

Grunters is 95 km (59 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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