Portsea Back Beach surf break

Portsea Back Beach surfForecast / VIC – Mornington Peninsula / Australia

information circle48hr Weather and Surf, issued 10 am Monday 09 Mar 2026 AEDT
Forecast update in hr  min  s Forecast update imminent
Portsea Back Beach surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Portsea Back Beach sea temperature is
19.3° C
(Which is 1.5°C warmer than normal for this time of year)

How big are the waves at Portsea Back Beach today?

The current surf forecast for Portsea Back Beach at 6PM is: 1.3m 13s primary swell from a Southwest direction and 0.5m 3s secondary swell from a South direction (forecast issued at 10:00am March 09). An open ocean swell of 0.4m 6s is not directed at the surf break. The wind direction is predicted to be cross-onshore.

Time (AEDT) & DateWave HeightWave Period
Morning (09 Mar)5ft (1.6m)13s
Afternoon (09 Mar)4.5ft (1.4m)13s
Evening (09 Mar)4.5ft (1.3m)12s

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


Updates in  hr  min  s Forecast update imminent
Monday
09
Tuesday
10
Wednesday
11
Thu
12
8AM11AM2PM5PM8PM11PM2AM5AM8AM11AM2PM5PM8PM11PM2AM5AM8AM11AM2PM5PM8PM11PM2AM5AM
Rating
(10 max)
3
3
2
0
0
0
0
0
1
2
2
0
0
2
2
2
0
0
1
0
0
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
1.6
SW
1.4
SW
1.4
SW
1.4
SW
1.3
SW
1.3
SW
1.1
SW
1.1
SW
1
SW
1
SW
1
SW
0.9
SW
1.1
SW
1.1
SW
1.1
SW
1.1
SW
1.1
SW
0.9
SW
1.1
SW
1.1
SW
1.6
SW
2.3
SW
1.8
SW
1.6
SW
Period(s) (?)131313131312121212121212121212121211111111677
Wave
Graph
(?)Metric surfscale
Energy kJ (?)827673653643504473361355268263263236314361355349303217308263558424267232
Wind
(km/h)
15
NNE
15
N
10
SSE
30
SSW
25
S
15
SSW
15
SW
10
SW
10
SW
5
NW
5
ENE
10
SSE
20
S
15
ESE
10
E
20
NNE
25
N
20
WNW
10
W
30
SW
50
SW
35
SW
30
SW
35
SW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
offcross-
off
cross-
on
cross-
on
cross-
on
ononononglassglasscross-
on
cross-
on
cross-
off
cross-
off
offcross-
off
crosscross-
on
ononononon
High Tide
/ height (m)
5:10PM
1.47
4:50AM
1.43
5:44PM
1.43
5:16AM
1.38
6:19PM
1.38
Low Tide
/ height (m)
10:45AM
0.13
11:02PM
0.47
11:16AM
0.14
11:33PM
0.54
11:45AM
0.17
12:03AM
0.60
Monday
09
Tuesday
10
Wednesday
11
Thu
12
Sunrise7:11-------7:13-------7:13-------
Sunset---7:50-------7:49-------7:46----
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
cloud
cloud
cloud
part cloud
cloud
part cloud
clear
cloud
cloud
cloud
Rain (mm)
------------------------
Temp. °C172023181818171616172021181818192124212017161615
Feels °C (?)161823141416161516182120161717171722201589108
  • 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

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