Alkimos Surf Break

Lat Long: 31.68° S 115.68° E

Alkimos Surf Forecast and Surf Report

Issued: 7 pm 21 Sep 2026 (local time)

Forecast update in  hr  min

Today's Alkimos sea temperature is
18.4°C
0.3° 

Alkimos surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Alkimos surf forecast from 21 Sep 2026:

  • Best quality surf: Wednesday 23 Sep, 2AM (local time) - 6ft (1.8m), 14s period, SW swell with cross-offshore winds.
  • Most powerful swell: Friday 25 Sep, 2PM (local time) - 11ft (3.5m), 19s period, SW swell with 8,496 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 23 Sep, 2AM (local time) - 6ft (1.8m), 14s period with SW swell.

Best Forecast Surf Conditions for Alkimos this week:

The surf forecast for Alkimos over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Sep 23) at 2AM. The primary swell is predicted to be 1.8m and 14s period with a secondary swell of 0.5m and 4s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Alkimos in the next 16 days are 3.5m 19s and forecast to arrive on Friday (Sep 25) at 2PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 5s period and expected on Friday (Sep 25) at 11PM.

Wave TypeTime (AWST) & Date Wave Height & Period
Next good surf (1 star+) 2AM (Wed 23rd Sep)6ft (1.8m) 14s
Best Surf 2AM (Wed 23rd Sep)6ft (1.8m) 14s
Most Powerful 2PM (Fri 25th Sep)11ft (3.5m) 19s

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


Short Range Forecast

Mostly dry. Very mild (max 17°C on Tue morning, min 13°C on Wed night). Wind will be generally light.

Days 5-7 Weather Summary

Light rain (total 5mm), mostly falling on Sat night. Warm (max 20°C on Fri afternoon, min 10°C on Sat night). Winds decreasing (fresh winds from the SE on Fri afternoon, calm by Sat night).

Tuesday
22
Wednesday
23
Thursday
24
Friday
25
Saturday
26
Sunday
27
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
2
2
2
4
1
0
3
2
0
3
4
6
2
2
1
4
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.9
WSW
15
1.7
WSW
14
1.7
WSW
14
1.8
SW
14
1.7
WSW
13
1.5
WSW
13
1.4
WSW
12
1.4
WSW
14
1.3
WSW
14
1.5
WSW
14
3
SW
19
3.5
SW
18
3
WSW
17
2.5
SW
16
2.4
SW
16
2.5
SW
15
2.1
SW
14
1.8
SW
14
1.2
WSW
13
Wave Graph
Metric surfscale
Energy kJ
1632
1244
1227
1161
932
760
563
721
663
883
6230
7782
4486
3097
2796
2614
1572
1226
458
Wind (km/h)
15
S
15
SSW
15
SSW
10
ESE
15
SW
15
SSW
10
SE
5
SSW
25
SSW
20
SE
30
SSE
40
SE
30
SSE
25
S
20
SSW
5
WSW
25
SSW
35
SW
30
SW
Wind State
cross
cross-on
cross-on
cross-off
cross-on
cross-on
cross-off
cross-on
cross-on
cross-off
cross
cross-off
cross
cross
cross-on
glassy
cross-on
cross-on
on
High Tide
6:17AM0.54m
7:06AM0.54m
9:55PM0.35m
7:49AM0.54m
9:34PM0.38m
8:31AM0.51m
9:32PM0.42m
9:15AM0.47m
9:37PM0.48m
10:00AM0.41m
9:48PM0.54m
Low Tide
3:11PM0.11m
3:15PM0.13m
00:50AM0.33m
3:17PM0.15m
2:07AM0.29m
3:19PM0.18m
3:04AM0.24m
3:20PM0.22m
3:57AM0.20m
3:18PM0.25m
4:52AM0.17m
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
part cloud
cloud
part cloud
cloud
part cloud
part cloud
rain showers
clear
rain showers
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:07
6:05
6:05
6:03
6:01
6:01
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:12
6:12
6:13
6:14
6:14
6:15
6:15
 mm
4
1
Temp °C
16
17
17
16
17
17
16
17
17
16
17
20
13
12
13
13
15
15
15
Feels °C
12
14
14
14
14
14
14
16
13
11
11
13
6
5
7
10
10
8
8
  • 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 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 16 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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