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Surf Forecasts:

Portsea Back Beach surf break

Portsea Back Beach surfForecast / VIC – Mornington Peninsula / Australia

information circle12 Day Weather and Surf, issued 4 pm Sunday 18 Jan 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
17.8° C
 (Which is slightly warmer than usual)

Best Forecast Surf Conditions for Portsea Back Beach this week:

The surf forecast for Portsea Back Beach over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Jan 19) at 11AM. The primary swell is predicted to be 0.6m and 13s period. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Portsea Back Beach in the next 12 days are 1.7m 17s and forecast to arrive on Wednesday (Jan 21) at 2PM. 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 6s period and expected on Monday (Jan 19) at 5PM.

Wave TypeTime (AEDT) & Date Wave Height & Period
Next good surf (1 star+)11AM (Mon 19th Jan)2ft (0.6m) 13s
Best Surf 5AM (Sun 25th Jan)3.5ft (1.1m) 15s
Most Powerful 2PM (Wed 21st Jan)5.5ft (1.7m) 17s

Table - best surf conditions forecast for Portsea Back Beach over the next 12 days.

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table

Short Range Forecast Mostly dry. Warm (max 23°C on Sun afternoon, min 16°C on Tue morning). Winds decreasing (strong winds from the ESE on Sun night, light winds from the SE by Tue morning).

Days 3-6 Weather Summary Mostly dry. Warm (max 28°C on Sat morning, min 14°C on Wed night). Winds decreasing (fresh winds from the S on Wed night, light winds from the NNE by Fri morning).

Sun
18
Monday
19
Tuesday
20
Wednesday
21
Thursday
22
Friday
23
Saturday
24
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
Rating
(10 max)
2
0
2
0
1
0
0
1
2
0
0
0
0
0
2
0
2
1
1
0
2
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
2.2
SE
0.8
SW
0.6
SW
0.6
SW
1.3
SE
0.5
SW
0.4
SW
0.9
SW
1.4
SW
1.6
SW
1.6
SW
1.4
SW
1.3
SW
1.1
SW
1.1
SW
1.1
SW
1
SW
0.8
SW
0.7
SW
0.6
SW
1.1
SW
Period(s) (?)7141313612242018161614141313121211111615
Wave
Graph
(?)Metric surfscale
Energy kJ (?)47925414413612472141660122713031179763658444418330259174116196479
Wind
(km/h)
25
ESE
35
ENE
20
ENE
30
SE
20
ESE
10
SE
25
SSE
20
SE
15
SSE
30
SSW
35
SSW
30
S
30
S
25
SE
10
NNE
30
SSE
20
ENE
20
NNE
20
NE
30
W
20
NNW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off		cross-
off		offcrosscross-
off		crosscrosscrosscross-
on		cross-
on		cross-
on		cross-
on		cross-
on		crossoffcrossoffoffoffcross-
on		cross-
off
High Tide
/ height (m)
1:16AM
1.27
12:02PM
1.05
2:01AM
1.32
1:07PM
1.07
2:40AM
1.36
2:04PM
1.12
3:14AM
1.38
2:55PM
1.19
3:46AM
1.40
3:43PM
1.25
4:16AM
1.41
4:29PM
1.30
4:45AM
1.41
Low Tide
/ height (m)
5:53PM
0.26
7:20AM
0.75
6:50PM
0.23
8:09AM
0.66
7:43PM
0.20
8:49AM
0.57
8:30PM
0.18
9:24AM
0.47
9:13PM
0.19
9:57AM
0.39
9:54PM
0.22
10:30AM
0.30
10:33PM
0.28
11:04AM
0.23
Sun
18
Monday
19
Tuesday
20
Wednesday
21
Thursday
22
Friday
23
Saturday
24
Sunrise--6:16--6:18--6:20--6:20--6:22--6:22--6:24
Sunset8:45--8:44--8:44--8:43--8:43--8:42--8:42--
clear
clear
part cloud
part cloud
part cloud
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
Rain (mm)
---------------------
Temp. °C232120232218202018181714151515192028323229
Feels °C (?)1914171817171618161412610913161923272827
  • 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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Latest Updates

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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.

View detailed surf forecast for Portsea Back Beach at:
surf-forecast.com

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 12 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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