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Surf Forecasts:

Portsea Back Beach surf break

Portsea Back Beach surfForecast / VIC – Mornington Peninsula / Australia

information circle16 Day Weather and Surf, issued 10 am Monday 16 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
18.2° 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 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Mar 16) at 5PM. The primary swell is predicted to be 1.6m and 14s period with a secondary swell of 0.4m and 4s. 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 1.9m 15s and forecast to arrive on Sunday (Mar 22) at 2AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 5s period and expected on Sunday (Mar 22) at 11PM.

Wave TypeTime (AEDT) & Date Wave Height & Period
Next good surf (1 star+) 5PM (Mon 16th Mar)5ft (1.6m) 14s
Best Surf11AM (Fri 20th Mar)6ft (1.8m) 14s
Most Powerful 2AM (Sun 22nd Mar)6ft (1.9m) 15s

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

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

Short Range Forecast Moderate rain (total 16mm), heaviest on Mon night. Very mild (max 17°C on Tue morning, min 15°C on Mon afternoon). Wind will be generally light.

Days 3-6 Weather Summary Mostly dry. Very mild (max 18°C on Fri afternoon, min 16°C on Thu morning). Wind will be generally light.

Monday
16
Tuesday
17
Wednesday
18
Thursday
19
Friday
20
Saturday
21
Sunday
22
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
2
3
1
0
1
2
3
0
2
2
0
2
4
2
3
1
1
3
3
0
3
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
1.6
SW
1.6
SW
1.4
SW
1.3
SW
1.3
SW
1.3
SW
1.5
SW
1.5
SW
1.5
SW
1.3
SW
1.3
SW
1.5
SW
1.8
SW
1.7
SW
1.5
SW
1.3
SW
1.4
SW
1.9
SW
1.7
SW
1.6
SW
1.3
SW
Period(s) (?)141413131312121212121212141313141315141313
Wave
Graph
(?)Metric surfscale
Energy kJ (?)10799516805915725205836346775285466561135101477861469415261123852609
Wind
(km/h)
25
SSE
10
ESE
10
SW
15
SSW
15
S
10
SSE
10
E
20
S
15
SSE
15
SSE
20
S
15
SSE
5
ESE
15
S
5
E
15
S
20
S
10
SSE
10
SE
20
S
0
S
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
crosscross-
off		oncross-
on		cross-
on		crosscross-
off		cross-
on		crosscrosscross-
on		crossglasscross-
on		glasscross-
on		cross-
on		crosscrosscross-
on		glass
High Tide
/ height (m)
8:28AM
1.05
10:26PM
1.10
9:55AM
1.02
11:34PM
1.11
11:24AM
1.06
12:32AM
1.15
12:41PM
1.16
1:18AM
1.21
1:43PM
1.28
1:58AM
1.28
2:35PM
1.41
2:34AM
1.34
3:22PM
1.50
3:10AM
1.40
Low Tide
/ height (m)
3:19PM
0.41
4:18AM
0.74
4:36PM
0.45
5:39AM
0.67
5:55PM
0.45
6:42AM
0.56
7:04PM
0.43
7:31AM
0.43
7:58PM
0.42
8:13AM
0.31
8:44PM
0.42
8:53AM
0.19
9:26PM
0.43
Monday
16
Tuesday
17
Wednesday
18
Thursday
19
Friday
20
Saturday
21
Sunday
22
Sunrise7:18--7:20--7:20--7:22--7:22--7:24--7:24--
Sunset-7:39--7:37--7:37--7:35--7:34--7:31--7:30-
cloud
light rain
mod rain
light rain
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
Rain (mm)
-592-----------------
Temp. °C161616171716161717171716161817171717161817
Feels °C (?)121515151414151615161514161815151514151615
  • 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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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:
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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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