Portsea Back Beach Surf Break

Lat Long: 38.33° S 144.69° E

Portsea Back Beach 48 hour detailed Surf Forecast

Issued: 9 pm 25 Aug 2026 (local time)

Forecast update in  hr  min

Today's Portsea Back Beach sea temperature is
13.5°C
0.8° 

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


How big are the waves at Portsea Back Beach today (26 Aug):

  • Morning surf: Morning surf (26 Aug, local time) - 6ft (1.8m), 14s period with SW swell.
  • Afternoon surf: Afternoon surf (26 Aug, local time) - 5.5ft (1.7m), 14s period with SW swell.
  • Evening surf: Evening surf (26 Aug, local time) - 4.5ft (1.4m), 13s period with SW swell.

The current surf forecast for Portsea Back Beach at 3AM is: 1.6m 14s primary swell from a Southwest direction and 1.1m 5s secondary swell from a Southwest direction (forecast issued at 09:00pm August 25). The wind direction is predicted to be onshore.

Time (AEST) & DateWave HeightWave Period
Morning (26 Aug)6ft (1.8m)14s
Afternoon (26 Aug)5.5ft (1.7m)14s
Evening (26 Aug)4.5ft (1.4m)13s

Table - waves today at Portsea Back Beach. (Swell directed towards the surf break)


Short Range Forecast

Mostly dry. Very mild (max 13°C on Thu afternoon, min 8°C on Thu morning). Wind will be generally light.

Tue
25
Wednesday
26
Thursday
27
7 PM
10 PM
1 AM
4 AM
7 AM
10 AM
1 PM
4 PM
7 PM
10 PM
1 AM
4 AM
7 AM
10 AM
1 PM
4 PM
7 PM
10 PM
Rating
(10 max)
0
0
0
1
0
0
0
0
0
1
1
1
1
2
2
3
3
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.6
SW
13
1.5
SW
12
1.7
SW
14
1.6
SW
14
1.5
SW
14
1.8
SW
14
1.7
SW
14
1.6
SW
13
1.6
SW
13
1.4
SW
13
1.5
SW
13
1.5
SW
13
1.3
SW
12
1.2
SW
12
1.1
SW
12
1.1
SW
14
1
SW
13
1.1
SW
13
Wave Graph
Metric surfscale
Energy kJ
825
645
1163
978
902
1336
1044
905
892
669
732
710
427
383
303
404
340
392
Wind (km/h)
25
SSW
25
SW
25
SW
20
SW
20
SW
20
SSW
20
SSW
20
SSW
20
SSW
15
SSW
10
WSW
10
W
10
WNW
15
NW
10
NNW
10
NNE
5
W
10
WNW
Wind State
on
on
on
on
on
on
on
on
cross-on
on
cross-on
cross-on
cross-on
cross
cross-off
cross-off
glassy
cross-on
High Tide
7:55PM1.11m
10:06AM1.18m
9:09PM1.07m
11:09AM1.20m
Low Tide
2:52AM0.41m
3:52PM0.82m
3:59AM0.41m
5:11PM0.75m
cloud
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
part cloud
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:52
6:52
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:52
5:53
 mm
Temp °C
13
12
12
12
11
12
12
12
12
11
10
9
9
8
11
13
13
12
Feels °C
8
8
6
7
6
7
7
7
7
8
7
6
6
5
8
11
12
9
  • 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
How to use the Wavefinder 

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 Portsea Back Beach 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.


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