Portsea Back Beach Surf Break
Lat Long: 38.33° S 144.69° E

Portsea Back Beach Surf Forecast and Surf Report

Weather Forecast for Portsea Back Beach

Issued: 3 am 06 Jun 2026 (local time)

Forecast update in  hr  min

Today's Portsea Back Beach sea temperature is
15.2° C

Slightly warmer than usual

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


Portsea Back Beach surf forecast from 5 Jun 2026:

  • Best quality surf: Monday 8 Jun, 4AM (local time) - 8ft (2.5m), 16s period, SW swell with cross-offshore winds.
  • Most powerful swell: Saturday 6 Jun, 4PM (local time) - 10ft (3.0m), 17s period, SW swell with 5,242 kJ wave energy.
  • Next surfable swell (1★+): Monday 8 Jun, 4AM (local time) - 8ft (2.5m), 16s period with SW swell.

Best Forecast Surf Conditions for Portsea Back Beach this week:

The surf forecast for Portsea Back Beach over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Jun 08) at 4AM. The primary swell is predicted to be 2.5m and 16s period with a secondary swell of 0.7m and 16s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Portsea Back Beach in the next 16 days are 3.0m 17s and forecast to arrive on Saturday (Jun 06) at 4PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 5s period and expected on Saturday (Jun 13) at 7AM.

Wave TypeTime (AEST) & Date Wave Height & Period
Next good surf (1 star+) 4AM (Mon 8th Jun)8ft (2.5m) 16s
Best Surf 4AM (Mon 8th Jun)8ft (2.5m) 16s
Most Powerful 4PM (Sat 6th Jun)10ft (3.0m) 17s

Table - best surf conditions forecast for Portsea Back Beach over the next 16 days.


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Mostly dry. Very mild (max 16°C on Sat afternoon, min 12°C on Sat morning). Winds increasing (light winds from the NW on Sun afternoon, fresh winds from the N by Mon night).

Days 4-6 Weather Summary

Light rain (total 8mm), mostly falling on Wed afternoon. Very mild (max 17°C on Tue afternoon, min 11°C on Thu night). Winds decreasing (strong winds from the N on Tue night, light winds from the SE by Wed night).

Saturday
6
Sunday
7
Monday
8
Tuesday
9
Wednesday
10
Thursday
11
Friday
12
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
5
2
4
4
4
4
3
2
0
0
1
0
2
6
3
4
3
2
1
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
2.3
SW
14
3
SW
17
3
SW
16
2.5
SW
16
2.5
SW
16
2.5
SW
16
2.5
SW
16
2.4
SW
15
1.9
SW
14
1.5
SW
14
1.3
SW
14
1.6
SW
16
1.4
SW
15
1.3
SW
14
2.5
WSW
17
2.3
SW
16
2.5
SW
15
2.3
SW
14
1.8
SW
12
1.3
SW
12
1.1
SW
13
Wave Graph
Metric surfscale
Energy kJ
2082
5242
4483
3417
3077
2925
3311
2697
1505
862
612
1179
856
676
4157
2513
3221
1919
944
520
369
Wind (km/h)
25
WNW
10
W
20
W
20
NNW
10
NW
15
NW
20
N
20
N
25
N
40
N
40
NNE
40
N
45
N
20
NNW
10
S
10
SSE
15
SE
15
E
20
NNE
35
NNE
50
N
Wind State
cross-on
cross-on
cross-on
cross-off
cross
cross
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-on
cross-on
cross
cross-off
cross-off
cross-off
cross-off
High Tide
3:58PM1.54m
3:33AM1.26m
4:30PM1.50m
4:18AM1.25m
5:02PM1.45m
5:08AM1.25m
5:35PM1.42m
6:05AM1.26m
6:12PM1.38m
7:08AM1.28m
6:53PM1.36m
8:17AM1.32m
7:42PM1.35m
Low Tide
10:08PM0.63m
9:49AM0.34m
10:43PM0.60m
10:28AM0.41m
11:19PM0.56m
11:10AM0.50m
11:58PM0.52m
11:57AM0.61m
00:43AM0.47m
12:51PM0.71m
1:34AM0.42m
1:53PM0.81m
2:30AM0.36m
part cloud
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
part cloud
cloud
rain showers
light rain
rain showers
part cloud
part cloud
clear
cloud
light rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:31
7:31
7:31
7:33
7:33
7:33
7:33
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:07
5:07
5:07
5:07
5:07
5:07
5:06
 mm
2
4
2
1
Temp °C
13
16
14
14
16
15
14
16
13
15
17
15
15
16
13
13
13
12
13
14
15
Feels °C
9
14
10
10
14
12
10
11
8
7
9
9
10
13
12
11
10
9
9
7
5
Swell 1
Height (m)
Direction
Period (s)
2.3
SW
14
3
SW
17
3
SW
16
2.5
SW
16
2.5
SW
16
2.5
SW
16
2.5
SW
16
2.4
SW
15
1.9
SW
14
1.5
SW
14
1.3
SW
14
1.6
SW
16
1.4
SW
15
1.3
SW
14
2
WSW
17
2.3
SW
16
2.5
SW
15
2.3
SW
14
1.8
SW
12
1.3
SW
12
1.1
SW
13
Energy kJ
2082
5242
4483
3417
3077
2925
3311
2697
1505
862
612
1179
856
676
2378
2513
3221
1919
944
520
369
Swell 2
Height (m)
Direction
Period (s)
0.6
S
13
1
SSW
19
0.8
SSW
16
0.6
S
16
0.6
S
16
0.6
S
16
0.6
S
16
0.6
SSW
16
0.4
SSW
15
0.3
SSW
15
0.8
SW
17
0.3
SSW
16
0.3
SSW
16
0.3
SSW
15
0.4
SSW
17
0.4
SSW
16
0.4
SSW
16
0.4
SSW
15
0.1
SW
19
0.6
SW
18
Energy kJ
130
763
354
190
188
183
190
198
74
44
358
51
47
45
101
83
84
78
14
197
Swell 3
Height (m)
Direction
Period (s)
0.2
SSW
14
0.1
S
18
Energy kJ
20
6
Wind waves
Height (m)
Direction
Period (s)
0.6
WNW
4
0.6
NW
3
0.5
N
3
1
N
4
1
N
4
0.9
NNE
4
1.3
NNE
5
1.2
N
5
2.5
WSW
17
0.4
ENE
3
0.4
N
3
1.3
N
5
Energy kJ
9
7
5
35
38
28
77
64
4157
4
2
72
Nearest Offshore or Glassy
Rating
(10 max)
4
5
5
5
4
4
4
4
4
2
2
2
3
3
3
4
5
4
3
2
1
Distance (km)
25
17
17
17
17
7
17
7
7
44
44
48
269
13
25
4
4
3
7
35
138
Best forecast wave conditions in Mornington Peninsula
Rating
(10 max)
4
6
4
5
5
4
5
4
3
4
5
4
3
2
Best forecast wave conditions in Australia
Rating
(10 max)
8
5
9
5
7
7
8
6
5
4
4
5
6
5
8
5
5
5
4
4
1
Header Global
Rating
(10 max)
9
8
9
6
8
7
8
7
6
9
5
7
6
5
9
9
9
7
6
7
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 Portsea Back Beach Surf forecast

The above surf forecast table for Portsea Back Beach provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Portsea Back Beach can be found by selecting the local surf guide option on the grey menu. Our Portsea Back Beach 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 (Portsea Back Beach) 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 Portsea Back Beach 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.

Portsea Back Beach is 29 km (18 miles) from Geelong. If you plan a holiday in Mornington Peninsula, look for hotels and other accommodation in Geelong. Geelong has rooms for a wide range of budgets as well as car hire and transport links.

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