Portsea Back Beach Surf Break

Lat Long: 38.33° S 144.69° E

Portsea Back Beach 48 hour detailed Surf Forecast

Issued: 3 pm 28 Sep 2026 (local time)

Forecast update in  hr  min

Today's Portsea Back Beach sea temperature is
14.1°C
1.1° 

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 (28 Sep):

  • Afternoon surf: Afternoon surf (28 Sep, local time) - 5ft (1.6m), 13s period with SW swell.
  • Evening surf: Evening surf (28 Sep, local time) - 5ft (1.5m), 13s period with SW swell.

The current surf forecast for Portsea Back Beach at 10PM is: 1.5m 13s primary swell from a Southwest direction and 0.3m 19s secondary swell from a Southwest direction (forecast issued at 03:00pm September 28). The wind direction is predicted to be cross-offshore and the swell rating is 3.

Time (AEST) & DateWave HeightWave Period
Morning (28 Sep)--
Afternoon (28 Sep)5ft (1.6m)13s
Evening (28 Sep)5ft (1.5m)13s

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


Short Range Forecast

Mostly dry. Warm (max 23°C on Wed afternoon, min 10°C on Mon afternoon). Winds decreasing (fresh winds from the N on Tue night, calm by Wed night).

Mon
28
Tuesday
29
Wednesday
30
1 PM
4 PM
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)
2
0
2
3
3
3
2
2
2
2
2
3
1
0
3
2
3
2
4
3
Swell
Height Map
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
14
1.6
SW
13
1.6
SW
13
1.5
SW
13
1.4
SW
13
1.4
SW
13
1.6
SW
16
1.6
SW
16
1.6
SW
16
1.6
SW
16
1.5
SW
15
1.4
SW
15
1.4
SW
15
1.4
SW
15
1.4
SW
15
1.5
SW
15
1.5
SW
16
1.5
SW
16
1.6
SW
16
1.5
SW
16
Wave Graph
Metric surfscale
Energy kJ
990
846
809
721
649
649
1287
1210
1179
1149
1006
879
868
856
868
988
1096
1082
1185
1055
Wind (km/h)
15
S
20
SSE
10
SE
10
ENE
10
NE
20
NE
25
N
30
N
30
NNE
30
NNE
30
NNE
35
NNE
35
N
35
N
25
N
25
N
25
N
25
N
5
W
5
SSE
Wind State
cross-on
cross-on
cross
cross-off
off
off
cross-off
cross-off
cross-off
cross-off
cross-off
off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
glassy
cross
High Tide
12:32PM1.26m
1:12AM1.41m
1:08PM1.32m
1:57AM1.50m
1:42PM1.37m
Low Tide
6:47PM0.32m
7:22AM0.45m
7:26PM0.21m
8:02AM0.46m
8:04PM0.12m
clear
part cloud
cloud
part cloud
cloud
cloud
part cloud
cloud
clear
cloud
cloud
part cloud
clear
cloud
cloud
cloud
cloud
cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
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6:01
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5:58
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<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
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6:22
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6:22
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6:23
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 mm
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Temp °C
10
10
10
11
11
13
13
15
21
22
20
19
18
18
18
19
21
23
21
17
Feels °C
7
6
7
8
8
8
7
9
14
17
14
12
11
10
13
13
16
18
21
17
  • 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 

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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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