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: 9 am 08 Jun 2026 (local time)

Forecast update in  hr  min

Today's Portsea Back Beach sea temperature is
15.0° 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 8 Jun 2026:

  • Best quality surf: Thursday 11 Jun, 1PM (local time) - 8ft (2.5m), 16s period, SW swell with glassy winds.
  • Most powerful swell: Thursday 11 Jun, 7AM (local time) - 10ft (3.0m), 17s period, SW swell with 4,420 kJ wave energy.
  • Next surfable swell (1★+): Thursday 11 Jun, 1PM (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 Thursday (Jun 11) at 1PM. The primary swell is predicted to be 2.5m and 16s period with a secondary swell of 0.4m and 16s. The wind is predicted to be glassy 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 Thursday (Jun 11) at 7AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 5s period and expected on Wednesday (Jun 10) at 4AM.

Wave TypeTime (AEST) & Date Wave Height & Period
Next good surf (1 star+) 1PM (Thu 11th Jun)8ft (2.5m) 16s
Best Surf 1PM (Thu 11th Jun)8ft (2.5m) 16s
Most Powerful 7AM (Thu 11th 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

Light rain (total 3mm), mostly falling on Wed morning. Very mild (max 16°C on Mon afternoon, min 12°C on Mon morning). Winds decreasing (strong winds from the N on Tue night, light winds from the NW by Wed night).

Days 4-6 Weather Summary

Light rain (total 3mm), mostly falling on Sat morning. Very mild (max 18°C on Fri night, min 12°C on Sat night). Winds decreasing (strong winds from the N on Fri night, calm by Sat night).

Monday
8
Tuesday
9
Wednesday
10
Thursday
11
Friday
12
Saturday
13
Sunday
14
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
4
4
2
0
0
1
1
2
4
4
5
4
1
1
0
0
1
4
4
4
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
2.5
SW
16
2.5
SW
15
1.9
SW
15
1.4
SW
14
1.3
SW
14
1.4
SW
16
1.3
SW
14
1.6
SW
14
2.1
SW
18
3
SW
16
2.5
SW
16
2.1
SW
14
1.6
SW
14
1.3
SW
13
0.8
SW
18
1.8
SW
16
1.8
SW
16
1.8
SW
16
1.6
SW
15
1.6
SW
14
1.5
SW
13
Wave Graph
Metric surfscale
Energy kJ
3579
2851
1526
787
595
989
676
1002
2845
3978
3021
1728
872
591
463
1692
1707
1513
1020
951
721
Wind (km/h)
15
NNE
20
NNE
30
NNE
40
N
40
N
45
N
30
NNW
15
WNW
5
NW
10
WNW
5
ENE
15
NNE
35
NNE
30
N
40
N
30
WNW
20
SSW
5
SW
5
NNE
10
NNE
25
N
Wind State
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross
cross
cross
cross-off
cross-off
cross-off
cross-off
cross-off
cross-on
on
glassy
off
off
cross-off
High Tide
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
9:28AM1.37m
8:38PM1.34m
10:39AM1.44m
9:38PM1.34m
Low Tide
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
3:03PM0.87m
3:31AM0.30m
4:18PM0.90m
clear
clear
clear
part cloud
part cloud
part cloud
light rain
rain showers
rain showers
clear
part cloud
part cloud
part cloud
part cloud
light rain
rain showers
cloud
part cloud
clear
clear
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:31
7:33
7:33
7:33
7:33
7:35
7:35
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:07
5:07
5:07
5:07
5:06
5:06
5:06
 mm
1
1
1
1
2
Temp °C
14
16
12
14
16
16
16
16
14
14
14
14
15
17
18
15
13
13
12
14
12
Feels °C
10
11
6
6
9
8
10
13
13
13
12
11
9
12
12
10
9
9
10
11
7
Swell 1
Height (m)
Direction
Period (s)
2.5
SW
16
2.5
SW
15
1.9
SW
15
1.4
SW
14
1.3
SW
14
1.4
SW
16
1.3
SW
14
1.6
SW
14
2.1
SW
18
3
SW
16
2.5
SW
16
2.1
SW
14
1.6
SW
14
1.3
SW
13
1.1
SW
13
1.8
SW
16
1.8
SW
16
1.8
SW
16
1.6
SW
15
1.6
SW
14
1.5
SW
13
Energy kJ
3579
2851
1526
787
595
989
676
1002
2845
3978
3021
1728
872
591
405
1692
1707
1513
1020
951
721
Swell 2
Height (m)
Direction
Period (s)
0.7
SSW
17
0.6
SSW
16
0.4
SSW
14
0.3
SSW
15
0.6
SW
18
0.3
SSW
16
0.2
SSW
15
0.3
SSW
18
1.5
WSW
13
0.4
SSW
17
0.4
SSW
16
0.4
SSW
15
0.3
SSW
14
0.3
SW
21
0.8
SW
18
0.4
SSW
17
0.4
SSW
16
0.4
NNW
4
0.3
SSW
15
0.8
SW
8
0.4
S
6
Energy kJ
286
196
81
43
199
50
22
64
721
100
84
73
37
69
463
97
86
6
43
67
12
Swell 3
Height (m)
Direction
Period (s)
0.2
WSW
20
0.1
S
18
0.2
SSW
19
0.4
SSW
17
0.1
S
21
0.2
SSW
19
0.3
SSW
16
0.7
S
6
Energy kJ
38
6
34
99
9
34
49
35
Wind waves
Height (m)
Direction
Period (s)
0.7
N
4
1.1
N
4
1.1
N
5
1.2
N
5
1.1
N
4
0.7
NNW
4
0.8
N
4
1
N
4
1
N
4
1.1
NNE
4
1.1
NNW
5
0.5
NW
4
1.1
SSW
6
Energy kJ
12
44
52
61
48
11
18
40
37
52
54
6
77
Nearest Offshore or Glassy
Rating
(10 max)
5
4
4
2
3
2
2
3
4
5
5
4
2
2
2
3
3
4
4
4
3
Distance (km)
7
7
7
44
63
138
17
17
7
17
0
0
44
44
126
27
27
0
0
0
17
Best forecast wave conditions in Mornington Peninsula
Rating
(10 max)
5
4
4
3
5
5
5
4
4
4
4
3
Best forecast wave conditions in Australia
Rating
(10 max)
8
6
5
4
4
7
5
4
9
9
5
5
4
3
2
5
4
6
5
4
7
Header Global
Rating
(10 max)
9
6
5
6
9
9
7
5
9
9
7
6
7
7
7
4
5
6
5
4
7
  • 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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