Portsea Back Beach surf break

Portsea Back Beach surfForecast / VIC – Mornington Peninsula / Australia

information circle16 Day Weather and Surf, issued 9 am Tuesday 26 May 2026 AEST
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
16.0° C
(Which is 1.1°C warmer than normal for this time of year)

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 (May 28) at 10AM. The primary swell is predicted to be 0.7m and 12s period with a secondary swell of 0.4m and 5s. 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 12s and forecast to arrive on Monday (Jun 01) at 1AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.2m 10s period and expected on Friday (May 29) at 10PM.

Wave TypeTime (AEST) & Date Wave Height & Period
Next good surf (1 star+)10AM (Thu 28th May)2.5ft (0.7m) 12s
Best Surf10AM (Thu 28th May)2.5ft (0.7m) 12s
Most Powerful 1AM (Mon 1st Jun)10ft (3.0m) 12s

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 2mm), mostly falling on Wed morning. Very mild (max 15°C on Tue morning, min 13°C on Wed night). Winds decreasing (fresh winds from the SE on Tue night, calm by Thu morning).

Days 4-6 Weather Summary

Light rain (total 3mm), mostly falling on Sat afternoon. Very mild (max 15°C on Fri morning, min 10°C on Sat night). Mainly fresh winds.

Tuesday
26
Wednesday
27
Thursday
28
Friday
29
Saturday
30
Sunday
31
Monday
1
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
1
0
0
0
1
1
1
0
0
0
0
0
0
0
0
0
1
2
2
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.2
SW
14
1.1
SW
14
2.4
SE
8
2.1
SE
8
1.9
S
7
0.8
SW
13
0.7
SW
12
0.4
SW
18
0.6
WSW
12
0.5
SW
15
0.6
SW
14
0.6
SW
13
0.6
SW
13
0.6
SW
12
1.4
WSW
7
1.9
SW
13
2.5
WSW
12
3
SW
12
2.5
SW
12
2.4
SW
11
1.9
SW
11
Wave Graph
Metric surfscale
Energy kJ
534
464
674
490
368
224
151
118
93
106
132
142
130
92
180
1327
2037
2375
1617
1401
894
Wind (km/h)
30
ESE
35
ESE
35
SE
25
SSW
30
WSW
10
WNW
5
SSW
10
SSE
10
SSW
15
SW
25
SSW
15
WSW
15
W
15
SSW
30
W
30
W
30
WSW
20
WNW
20
NW
30
N
55
N
cross-off
cross-off
cross
cross-on
on
cross
glassy
cross
on
on
on
cross-on
cross-on
on
cross-on
cross-on
cross-on
cross-on
cross
cross-off
cross-off
High Tide
7:10PM1.40m
8:06AM1.29m
7:58PM1.36m
9:17AM1.31m
8:47PM1.33m
10:26AM1.36m
9:37PM1.32m
11:25AM1.42m
10:26PM1.32m
12:15PM1.48m
11:15PM1.32m
12:58PM1.53m
00:01AM1.32m
Low Tide
12:52PM0.61m
1:39AM0.50m
1:52PM0.72m
2:35AM0.47m
2:57PM0.81m
3:32AM0.43m
4:06PM0.85m
4:25AM0.39m
5:11PM0.86m
5:14AM0.35m
6:08PM0.84m
5:58AM0.31m
6:56PM0.81m
part cloud
part cloud
cloud
light rain
cloud
cloud
part cloud
cloud
cloud
cloud
cloud
cloud
part cloud
rain showers
part cloud
part cloud
rain showers
part cloud
part cloud
part cloud
mod rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:22
7:24
7:24
7:26
7:26
7:26
7:28
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:12
5:10
5:10
5:09
5:09
5:08
5:08
2
1
2
9
Temp °C
15
15
14
14
14
14
15
15
14
15
14
14
14
15
13
14
14
11
13
15
13
11
9
8
10
9
11
15
14
12
13
10
10
11
12
8
8
8
6
8
8
4
Swell 1
Height (m)
Direction
Period (s)
1.2
SW
14
1.1
SW
14
1
SW
14
1.8
SSE
8
0.8
SW
13
0.9
S
6
0.7
SW
12
0.6
SW
12
0.6
WSW
12
0.5
SW
15
0.6
SW
14
0.6
SW
13
0.6
SW
4
0.6
SW
12
0.8
WSW
12
1.9
SW
13
0.1
SE
10
0.1
SE
10
2.5
SW
12
2.2
SW
11
1.9
SW
11
Energy kJ
534
464
355
372
235
58
151
118
93
106
132
142
16
92
180
1327
4
4
1617
1214
894
Swell 2
Height (m)
Direction
Period (s)
0.3
SW
16
0.5
S
10
0.1
S
8
1
SW
13
0.1
SW
21
0.8
SW
13
0.4
SSW
5
0.4
SW
18
0.4
SW
16
0.4
WSW
11
0.4
WSW
11
0.2
ESE
10
0.6
SW
13
0.2
ESE
10
0.2
ESE
10
0.1
SE
10
0.1
SW
19
Energy kJ
41
47
1
340
17
224
11
79
67
50
49
10
130
10
10
4
15
Swell 3
Height (m)
Direction
Period (s)
0.1
SE
12
0.3
SSW
14
0.8
SE
7
0.3
SE
9
0.4
SSE
6
0.4
SE
5
0.3
SW
4
0.2
ESE
10
0.2
ESE
9
0.3
ESE
10
0.2
ESE
10
0.1
S
20
Energy kJ
5
40
64
13
12
6
3
10
8
20
10
7
Wind waves
Height (m)
Direction
Period (s)
1.5
SE
6
2
SE
7
2.4
SE
8
2.1
SE
8
1.9
S
7
0.4
SSW
5
0.4
SSE
6
0.4
S
3
0.8
SSW
4
0.9
SW
4
0.9
SW
4
1.1
SW
5
1.4
WSW
7
1.2
WNW
4
2.5
WSW
12
3
SW
12
2.4
SW
11
Energy kJ
154
357
674
490
368
7
12
3
18
26
29
68
180
54
2037
2375
1401
Nearest Offshore or Glassy
Rating
(10 max)
4
4
4
2
3
2
1
2
1
1
1
1
1
1
1
2
2
4
5
4
1
Distance (km)
176
282
282
93
45
13
0
4
27
25
31
17
13
27
27
27
31
17
17
17
138
Best forecast wave conditions in Mornington Peninsula
Rating
(10 max)
2
1
2
1
1
4
4
Best forecast wave conditions in Australia
Rating
(10 max)
4
4
5
4
4
4
3
3
3
3
3
3
3
4
4
4
2
4
5
4
5
Header Global
Rating
(10 max)
4
9
9
7
6
6
9
9
9
9
5
5
5
4
7
7
7
5
4
4
6
  • 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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