Radar Reef surfForecast / WA – Rottnest Island / Australia

information circle16 Day Weather and Surf, issued 1 am Tuesday 17 Mar 2026 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
21.8° C
(Which is slightly cooler than normal)

Best Forecast Surf Conditions for Radar Reef this week:

The surf forecast for Radar Reef over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Mar 17) at 11AM. The primary swell is predicted to be 0.9m and 13s period with a secondary swell of 0.2m and 5s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Radar Reef in the next 16 days are 1.4m 15s and forecast to arrive on Friday (Mar 20) at 11PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 3s period and expected on Tuesday (Mar 17) at 8AM.

Wave TypeTime (AWST) & Date Wave Height & Period
Next good surf (1 star+)11AM (Tue 17th Mar)3ft (0.9m) 13s
Best Surf 2AM (Sat 21st Mar)4.5ft (1.4m) 14s
Most Powerful11PM (Fri 20th Mar)4.5ft (1.4m) 15s

Table - best surf conditions forecast for Radar Reef over the next 16 days.


Updates in  hr  min  s Forecast update imminent

Short Range Forecast Mostly dry. Warm (max 32°C on Wed afternoon, min 22°C on Tue morning). Wind will be generally light.

Days 3-6 Weather Summary Mostly dry. Warm (max 28°C on Sat morning, min 18°C on Sun night). Winds increasing (calm on Fri night, strong winds from the SSW by Sun night).

Tuesday
17
Wednesday
18
Thursday
19
Friday
20
Saturday
21
Sunday
22
Monday
23
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
2
0
2
2
0
1
1
0
1
1
0
3
2
0
0
0
0
0
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
0.9
WSW
0.9
WSW
0.9
WSW
0.9
SW
0.9
SW
0.8
WSW
0.9
SW
1.1
SW
1.1
SW
0.9
WSW
1.3
SW
1.4
SW
1.2
WSW
1.2
WSW
1
WSW
0.9
WSW
1.3
SW
1.6
SW
0.9
WSW
2.3
SW
0.8
WSW
Period(s) (?)1313131212121215141313141413141414912712
Wave
Graph
(?)Metric surfscale
Energy kJ (?)261265265220209177195496456309628821493479419342586427260483194
Wind
(km/h)
10
ENE
20
SSW
15
SE
10
NNE
25
SSW
15
ENE
15
NW
20
SSW
15
S
10
SE
25
SSW
5
S
10
WNW
35
SSW
30
S
35
SSW
40
SSW
40
SSE
30
S
50
SSW
30
ESE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off
cross-
on
cross-
off
cross-
off
cross-
on
offcrosscross-
on
cross-
on
crossonglasscrosscross-
on
cross-
on
cross-
on
oncross-
on
cross-
on
oncross-
off
High Tide
/ height (m)
10:36AM
0.59
8:42PM
0.79
10:18AM
0.59
9:32PM
0.72
10:19AM
0.63
10:20PM
0.64
10:32AM
0.70
11:09PM
0.57
10:52AM
0.79
12:05AM
0.50
11:19AM
0.88
11:52AM
0.96
Low Tide
/ height (m)
2:11PM
0.53
4:01AM
0.34
3:09PM
0.45
4:07AM
0.37
4:05PM
0.39
4:05AM
0.41
5:06PM
0.37
3:53AM
0.45
6:24PM
0.39
3:19AM
0.47
8:41PM
0.41
12:34AM
0.39
Tuesday
17
Wednesday
18
Thursday
19
Friday
20
Saturday
21
Sunday
22
Monday
23
Sunrise6:18--6:18--6:20--6:20--6:20--6:22--6:22--
Sunset-6:34--6:32--6:30--6:30--6:29--6:27--6:25-
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
cloud
part cloud
part cloud
part cloud
clear
clear
clear
clear
part cloud
clear
clear
clear
Rain (mm)
---------------------
Temp. °C272927293228302824262526282522202120192021
Feels °C (?)262722272925272522242226262221171713131214
  • Map Icons:
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  • 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 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 16 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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