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Surf Forecasts:

Gnarabup surfForecast / WA – Margaret River / Australia

information circle12 Day Weather and Surf, issued 1 am Thursday 21 Aug 2025 AWST
Forecast update in hr  min  s Forecast update imminent
Gnarabup surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Gnarabup sea temperature is
17.6° C
 (Which is normal for this time of year)

Best Forecast Surf Conditions for Gnarabup this week:

The surf forecast for Gnarabup over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Aug 21) at 5AM. The primary swell is predicted to be 6.0m and 15s period. The wind is predicted to be onshore as the swell arrives.

The most powerful waves expected at Gnarabup in the next 12 days are 6.0m 15s and forecast to arrive on Thursday (Aug 21) 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 1.5m 9s period and expected on Thursday (Aug 28) at 5AM.

Wave TypeTime (AWST) & Date Wave Height & Period
Next good surf (1 star+) 5AM (Thu 21st Aug)20ft (6.0m) 15s
Best Surf 5AM (Thu 21st Aug)20ft (6.0m) 15s
Most Powerful 5AM (Thu 21st Aug)20ft (6.0m) 15s

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

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

Short Range Forecast Moderate rain (total 12mm), heaviest on Thu afternoon. Very mild (max 16°C on Fri afternoon, min 13°C on Thu morning). Winds increasing (light winds from the W on Fri morning, fresh winds from the NW by Sat night).

Days 3-6 Weather Summary Heavy rain (total 34mm), heaviest during Sun morning. Very mild (max 15°C on Sun morning, min 9°C on Mon morning). Winds increasing (moderate winds from the SW on Sun night, near gales from the SW by Mon night).

Thursday
21
Friday
22
Saturday
23
Sunday
24
Monday
25
Tuesday
26
Wednesday
27
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
0
0
6
6
0
3
2
3
6
0
0
0
0
0
0
0
0
0
0
0
1
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
5.5
WSW
5
WSW
4.5
SW
4
SW
4
SW
3.5
SW
2.5
SW
2.4
SW
3.5
SW
4
WSW
4
WSW
5
SW
4.5
SW
4.5
SW
6.5
SW
6.5
SSW
5
SSW
2.5
S
3
SSW
3
SSW
3
SSW
Period(s) (?)151515141413131318171612121212131312111010
Wave
Graph
(?)Metric surfscale
Energy (?)12559998285477077559236212362208387609989147737065107896181118251420388133814234720401978
Wind
(km/h)
30
WNW
25
W
20
W
10
WNW
20
WNW
15
NNW
15
NNW
15
NNW
25
NNW
35
W
35
WSW
30
SW
45
SW
50
WSW
60
SW
40
SSW
30
SW
40
SW
30
SSW
25
SSW
20
S
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		crosscrosscrosscrosscross-
on		onononononcross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on
High Tide
/ height (m)
8:33AM
0.78
9:12AM
0.76
9:47AM
0.71
12:47AM
0.33
10:15AM
0.64
11:46PM
0.37
10:36AM
0.57
11:29PM
0.42
10:37AM
0.48
11:21PM
0.48
10:00AM
0.42
11:23PM
0.54
Low Tide
/ height (m)
5:36PM
0.03
6:01PM
0.10
6:14PM
0.17
1:37AM
0.33
6:06PM
0.25
3:19AM
0.33
5:30PM
0.30
4:23AM
0.33
4:53PM
0.31
5:24AM
0.35
4:21PM
0.30
Thursday
21
Friday
22
Saturday
23
Sunday
24
Monday
25
Tuesday
26
Wednesday
27
Sunrise6:52--6:52--6:50--6:48--6:48--6:47--6:46--
Sunset-5:52--5:53--5:54--5:54--5:55--5:57--5:58-
cloud
rain showers
rain showers
rain showers
rain showers
clear
clear
clear
rain showers
thunderstorm
rain showers
mod rain
thunderstorm
light rain
mod rain
light rain
rain showers
rain showers
part cloud
cloud
part cloud
Rain (mm)
-3242---1418429213---
Temp. °C141515151615161615151411121111121314131313
Feels °C (?)79913121212121276511-1257577
  • 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 Wind reports 11 km away suggest it is still onshore at Gnarabup (light winds from the WSW at Witchcliffe). A 6.2m groundswell from the WSW

    41 minutes ago Gnarabup
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Actual: 41 min ago

11 km/h
WSW
Onshore
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 Gnarabup 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 Gnarabup at:
surf-forecast.com

Information about the Gnarabup Surf forecast

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

Gnarabup is 94 km (58 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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