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Surf Forecasts:

Radar Reef surfForecast / WA – Rottnest Island / Australia

information circle12 Day Weather and Surf, issued 7 pm Sunday 31 Aug 2025 AWST
Forecast update in hr  min  s Forecast update imminent
Radar Reef surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Radar Reef sea temperature is
18.6° C
 (Which is normal for this time of year)

Best Forecast Surf Conditions for Radar Reef this week:

The surf forecast for Radar Reef over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Sep 01) at 2AM. The primary swell is predicted to be 1.9m and 16s period. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Radar Reef in the next 12 days are 4.0m 16s and forecast to arrive on Saturday (Sep 06) at 5PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 5s period and expected on Friday (Sep 05) at 11AM.

Wave TypeTime (AWST) & Date Wave Height & Period
Next good surf (1 star+) 2AM (Mon 1st Sep)6ft (1.9m) 16s
Best Surf 2AM (Mon 1st Sep)6ft (1.9m) 16s
Most Powerful 5PM (Sat 6th Sep)13ft (4.0m) 16s

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

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

Short Range Forecast Mostly dry. Very mild (max 17°C on Mon night, min 14°C on Sun night). Wind will be generally light.

Days 3-6 Weather Summary Heavy rain (total 47mm), heaviest during Fri afternoon. Very mild (max 18°C on Thu night, min 13°C on Fri night). Winds increasing (moderate winds from the SW on Wed night, gales from the WSW by Sat afternoon).

Monday
01
Tuesday
02
Wednesday
03
Thursday
04
Friday
05
Saturday
06
Sun
07
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
4
4
1
1
4
2
3
2
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
1.9
WSW
1.7
WSW
1.6
WSW
1.6
WSW
1.9
WSW
2
WSW
2
WSW
2
WSW
2
WSW
1.8
WSW
1.3
WSW
1.5
WSW
1.4
WSW
1
WSW
3
W
3.5
WSW
3.5
WSW
4
WSW
4
WSW
3.5
WSW
3
WSW
Period(s) (?)161514131313131414161314141410111216151414
Wave
Graph
(?)Metric surfscale
Energy (?)18261275106185012641384142615791771155199885011354741520280739698321631342783082
Wind
(km/h)
10
SE
0
W
15
SW
10
S
10
NE
15
S
15
SE
10
SSW
25
SSW
30
SW
30
WSW
30
W
35
WNW
50
NW
55
WNW
55
WNW
50
WSW
50
SW
40
WSW
40
WSW
35
WSW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off		glassoncross-
on		offcross-
on		crosscross-
on		cross-
on		ononcross-
on		crosscross-
off		cross-
on		cross-
on		ononononon
High Tide
/ height (m)
2:27AM
0.89
3:49AM
0.93
5:17AM
0.96
6:28AM
0.96
7:27AM
0.93
11:14PM
0.57
8:20AM
0.88
10:33PM
0.52
9:11AM
0.80
Low Tide
/ height (m)
3:19PM
0.41
3:21PM
0.41
3:31PM
0.39
3:46PM
0.36
4:03PM
0.33
1:04AM
0.56
4:21PM
0.31
2:16AM
0.46
4:35PM
0.31
Monday
01
Tuesday
02
Wednesday
03
Thursday
04
Friday
05
Saturday
06
Sun
07
Sunrise-6:35--6:33--6:33--6:31--6:31--6:28--6:28-
Sunset--6:00--6:00--6:01--6:01--6:02--6:04--6:04
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
rain showers
clear
rain showers
rain showers
heavy rain
heavy rain
rain showers
light rain
rain showers
rain showers
light rain
Rain (mm)
----------2-43191243411
Temp. °C151416171516161416171717181817161516161616
Feels °C (?)12141414141513131211111113117645689
  • 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 - Rottnest Island

  1. weather stationWind Update Light wind has turned cross-on at Radar Reef (moderate winds from the S at Rottnest Island Lighthouse 5 km from Radar Reef). A 2.2m long period groundswell from the WSW

    1 hour 41 minutes ago Radar Reef
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<
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1 h 41 min ago

20 km/h
S
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 Radar Reef 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 Radar Reef at:
surf-forecast.com

Information about the Radar Reef Surf forecast

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

Radar Reef is 30 km (19 miles) from the very large city of Fremantle. If you plan a holiday in Rottnest Island, look for hotels and other accommodation in Fremantle. Fremantle has rooms for a wide range of budgets as well as cheap car hire and transport links.

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