Radar Reef surfForecast / WA – Rottnest Island / Australia

information circle16 Day Weather and Surf, issued 1 pm Sunday 19 Apr 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
22.0° 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 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Apr 22) at 5AM. The primary swell is predicted to be 2.3m and 13s period. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Radar Reef in the next 16 days are 3.5m 13s and forecast to arrive on Tuesday (Apr 21) at 8AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Saturday (Apr 25) at 2AM.

Wave TypeTime (AWST) & Date Wave Height & Period
Next good surf (1 star+) 5AM (Wed 22nd Apr)7.5ft (2.3m) 13s
Best Surf 5AM (Wed 22nd Apr)7.5ft (2.3m) 13s
Most Powerful 8AM (Tue 21st Apr)11ft (3.5m) 13s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast Light rain (total 5mm), mostly falling on Mon night. Warm (max 20°C on Mon afternoon, min 15°C on Tue night). Winds increasing (light winds from the WSW on Sun night, gales from the SW by Mon night).

Days 3-6 Weather Summary Light rain (total 2mm), mostly falling on Thu morning. Very mild (max 19°C on Wed night, min 16°C on Sat morning). Winds decreasing (strong winds from the W on Thu morning, calm by Fri morning).

Sun
19
Monday
20
Tuesday
21
Wednesday
22
Thursday
23
Friday
24
Saturday
25
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
Rating
(10 max)
1
1
1
0
0
0
3
3
4
0
0
0
0
2
4
1
3
3
0
2
1
Swell
Height Map
Wave Height (m) & direction (?)
1.7
WSW
1.7
WSW
1.8
WSW
1.7
WSW
4
WSW
3.5
WSW
3
WSW
2.5
WSW
2
WSW
1.7
WSW
1.2
WSW
3.5
W
1.8
WSW
2.1
WSW
2.5
WSW
2.3
WSW
1.8
WSW
1.6
WSW
1.3
WSW
1.2
SW
1.1
SW
Period(s) (?)131313151113141313131213121314141312121111
Wave
Graph
(?)Metric surfscale
Energy kJ (?)1074894109312253388369734132245135993844034059491362238318651110739525380288
Wind
(km/h)
20
SW
10
SSW
25
NW
45
NW
50
WSW
25
SSW
15
SSW
20
ESE
15
NNE
20
WSW
35
WNW
35
WSW
25
WSW
15
SW
5
ESE
20
S
25
SE
15
E
25
S
15
E
20
N
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
ononcrosscrossoncross-
on
cross-
on
cross-
off
cross-
off
cross-
on
crossonononglasscross-
on
cross-
off
cross-
off
cross-
on
cross-
off
cross-
off
High Tide
/ height (m)
10:47AM
1.12
11:23AM
1.14
12:02PM
1.11
12:46PM
1.04
1:47PM
0.94
3:55PM
0.83
10:35AM
0.69
Low Tide
/ height (m)
7:28PM
0.43
9:23PM
0.43
11:19PM
0.42
12:32AM
0.40
1:23AM
0.39
1:58AM
0.40
2:17AM
0.42
12:19PM
0.68
Sun
19
Monday
20
Tuesday
21
Wednesday
22
Thursday
23
Friday
24
Saturday
25
Sunrise--6:41--6:41--6:43--6:43--6:43--6:45--6:46
Sunset5:52--5:52--5:51--5:50--5:49--5:46--5:45--
part cloud
clear
part cloud
part cloud
light rain
cloud
part cloud
clear
clear
clear
part cloud
rain showers
part cloud
part cloud
part cloud
clear
clear
clear
clear
clear
clear
Rain (mm)
----5------2---------
Temp. °C181818202016171716181919191817181818212321
Feels °C (?)14151613108131412141511121415141415162019
  • 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 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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