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Surf Forecasts:

Alkimos surfForecast / WA – Perth City / Australia

information circle12 Day Weather and Surf, issued 7 am Thursday 18 Sep 2025 AWST
Forecast update in hr  min  s Forecast update imminent
Alkimos surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Alkimos sea temperature is
18.4° C
 (Which is normal for this time of year)

Best Forecast Surf Conditions for Alkimos this week:

The surf forecast for Alkimos over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Sep 20) at 2AM. The primary swell is predicted to be 2.4m and 14s period. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Alkimos in the next 12 days are 3.0m 15s and forecast to arrive on Friday (Sep 19) at 2PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 3s period and expected on Monday (Sep 22) at 5AM.

Wave TypeTime (AWST) & Date Wave Height & Period
Next good surf (1 star+) 2AM (Sat 20th Sep)8ft (2.4m) 14s
Best Surf 2PM (Mon 22nd Sep)5.5ft (1.7m) 19s
Most Powerful 2PM (Fri 19th Sep)10ft (3.0m) 15s

Table - best surf conditions forecast for Alkimos 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 18°C on Sat afternoon, min 14°C on Fri night). Wind will be generally light.

Days 3-6 Weather Summary Mostly dry. Warm (max 25°C on Tue afternoon, min 14°C on Sun morning). Wind will be generally light.

Thursday
18
Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
1
0
2
4
2
4
3
0
3
3
2
3
4
4
4
4
4
4
4
4
4
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
2.2
WSW
2.5
WSW
2.5
WSW
3
WSW
2.5
WSW
2.4
WSW
2.1
WSW
1.8
WSW
1.6
WSW
1.5
WSW
1.6
SW
1.7
WSW
1.5
WSW
1.7
WSW
2.2
WSW
2.1
WSW
2
WSW
1.9
WSW
1.8
WSW
2
WSW
2.1
WSW
Period(s) (?)111414151514141413131315191917161616141515
Wave
Graph
(?)Metric surfscale
Energy kJ (?)127430293029336131142412162912229027728671423171220692968230320081684130116221801
Wind
(km/h)
20
SW
25
SW
20
SW
5
SSE
15
SSW
10
SE
5
SSE
25
S
10
SE
10
ESE
15
S
20
E
20
ENE
15
ESE
20
E
15
NE
10
E
15
ENE
15
NNE
5
SW
10
NE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
oncross-
on		cross-
on		crosscross-
on		cross-
off		crosscross-
on		cross-
off		cross-
off		crosscross-
off		offcross-
off		offoffoffoffcross-
off		glassoff
High Tide
/ height (m)
7:50AM
0.56
10:13PM
0.33
8:31AM
0.53
9:46PM
0.38
9:09AM
0.49
9:47PM
0.43
9:43AM
0.43
9:54PM
0.48
10:14AM
0.38
10:02PM
0.53
10:38AM
0.32
10:12PM
0.56
Low Tide
/ height (m)
3:50PM
0.09
4:00PM
0.14
1:33AM
0.31
3:57PM
0.19
2:41AM
0.28
3:40PM
0.23
3:30AM
0.25
3:23PM
0.25
4:14AM
0.22
3:14PM
0.25
4:57AM
0.21
3:08PM
0.25
Thursday
18
Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Sunrise6:13--6:11--6:09--6:09--6:07--6:05--6:05--
Sunset-6:09--6:10--6:10--6:12--6:12--6:13--6:14-
cloud
part cloud
cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
Rain (mm)
---------------------
Temp. °C161616161716171816202121212423222524242725
Feels °C (?)111113151514161513191819182221182221212523
  • 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 - Perth City

  1. weather stationWind Update Onshore wind has changed to cross-on at Alkimos (moderate winds from the SW at Ocean Reef 10 km from Alkimos). A 2.6m groundswell from the WSW

    1 hour 5 minutes ago Alkimos
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<
>
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1 h 5 min ago

26 km/h
SW
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 Alkimos 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 Alkimos at:
surf-forecast.com

Information about the Alkimos Surf forecast

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

Are you planning a holiday in Perth City Coast? If you are looking for accommodation near Alkimos, camping, hotels and holiday cottages in Perth City Coast, consider staying in Perth which is 35 km (22 miles) away. Other places in and around Perth City Coast where you can find information about places to rent, and car hire include Fremantle which is 43 km (27 miles) away, Canning Vale, Gosnells and Kwinana.

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