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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 am Wednesday 05 Nov 2025 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
15.4° C
 (Which is 1.4°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 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Nov 06) at 2PM. The primary swell is predicted to be 1.1m and 16s period with a secondary swell of 1.4m and 10s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Portsea Back Beach in the next 12 days are 3.5m 9s and forecast to arrive on Saturday (Nov 08) at 2PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 4s period and expected on Friday (Nov 07) at 8AM.

Wave TypeTime (AEDT) & Date Wave Height & Period
Next good surf (1 star+) 2PM (Thu 6th Nov)3.5ft (1.1m) 16s
Best Surf 2PM (Thu 6th Nov)3.5ft (1.1m) 16s
Most Powerful 2PM (Sat 8th Nov)11ft (3.5m) 9s

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 Moderate rain (total 11mm), heaviest on Thu night. Warm (max 21°C on Fri morning, min 10°C on Wed night). Winds increasing (light winds from the N on Fri afternoon, strong winds from the SSW by Fri night).

Days 3-6 Weather Summary Heavy rain (total 27mm), heaviest during Sat night. Very mild (max 15°C on Mon afternoon, min 9°C on Mon night). Winds decreasing (strong winds from the SSE on Sat afternoon, light winds from the NNE by Mon night).

Wednesday
05
Thursday
06
Friday
07
Saturday
08
Sunday
09
Monday
10
Tuesday
11
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
0
0
1
3
1
4
2
0
0
0
0
0
0
0
0
1
2
2
0
0
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
2.5
SW
3
WSW
2.1
SW
1.1
SW
1.1
SW
1.6
SW
1.5
SW
1.6
SW
2.2
SW
3.5
SSW
3
S
1.9
SW
2
SSW
1.6
SW
1.3
SW
1.3
SW
1.2
SW
2.3
SW
2.5
SW
3
SW
1.9
SW
Period(s) (?)111010161514131211981212121111131211811
Wave
Graph
(?)Metric surfscale
Energy kJ (?)1359180284256057410637326951031180912261043112564842245346614381605844850
Wind
(km/h)
35
WNW
30
W
15
WNW
15
N
15
W
5
N
20
NNW
20
SW
35
SSW
40
SSW
40
SSE
20
SSE
25
S
25
SSW
15
SSW
15
W
10
W
20
NW
45
SSW
45
SSW
40
SSW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on		cross-
on		cross-
on		cross-
off		cross-
on		cross-
off		cross-
off		oncross-
on		oncross-
on		cross-
on		cross-
on		cross-
on		oncross-
on		cross-
on		crossononcross-
on
High Tide
/ height (m)
11:18AM
1.20
12:38AM
1.41
12:12PM
1.26
1:35AM
1.53
1:03PM
1.32
2:26AM
1.62
1:51PM
1.38
3:13AM
1.67
2:39PM
1.41
3:58AM
1.67
3:27PM
1.41
4:43AM
1.62
4:15PM
1.38
Low Tide
/ height (m)
5:48PM
0.29
6:44AM
0.63
6:44PM
0.17
7:39AM
0.60
7:35PM
0.07
8:29AM
0.58
8:24PM
0.01
9:15AM
0.56
9:11PM
-0.01
10:00AM
0.54
9:57PM
0.01
10:44AM
0.54
10:44PM
0.08
Wednesday
05
Thursday
06
Friday
07
Saturday
08
Sunday
09
Monday
10
Tuesday
11
Sunrise6:09--6:07--6:07--6:05--6:05--6:03--6:03--
Sunset-8:00--8:00--8:01--8:02--8:04--8:05--8:06-
light rain
rain showers
clear
part cloud
part cloud
mod rain
cloud
cloud
rain showers
light rain
mod rain
heavy rain
light rain
clear
rain showers
part cloud
part cloud
part cloud
mod rain
rain showers
rain showers
Rain (mm)
12---6--247132-1---812
Temp. °C141615142015212115121211121313131513101111
Feels °C (?)71010101713172094458789129-100
  • Map Icons:
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  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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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