Marengo surfForecast / VIC – Cape Otway / Australia

information circle12 Day Weather and Surf, issued 10 am Thursday 18 Dec 2025 AEDT
Forecast update in hr  min  s Forecast update imminent
Marengo surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Marengo sea temperature is
15.7° C
(Which is normal for this time of year)


Best Forecast Surf Conditions for Marengo this week:

The surf forecast for Marengo over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Dec 18) at 5PM. The primary swell is predicted to be 0.5m and 14s period with a secondary swell of 0.5m and 11s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Marengo in the next 12 days are 4.0m 15s and forecast to arrive on Wednesday (Dec 24) at 11AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 3s period and expected on Friday (Dec 19) at 11PM.

Wave TypeTime (AEDT) & Date Wave Height & Period
Next good surf (1 star+) 5PM (Thu 18th Dec)1.5ft (0.5m) 14s
Best Surf 8PM (Tue 23rd Dec)11ft (3.5m) 16s
Most Powerful11AM (Wed 24th Dec)13ft (4.0m) 15s

Table - best surf conditions forecast for Marengo over the next 12 days.

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Mostly dry. Warm (max 26°C on Thu morning, min 12°C on Sat night). Wind will be generally light.

Days 3-6 Weather Summary Light rain (total 5mm), mostly falling on Mon night. Very mild (max 18°C on Mon afternoon, min 12°C on Sun night). Mainly fresh winds.

Thursday
18
Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
1
1
1
2
1
1
0
0
0
1
0
2
2
0
2
3
4
4
7
5
5
Swell
Height Map
Wave Height (m) & direction (?)
0.6
SW
0.5
SW
0.9
SW
0.9
SSW
0.9
SSW
1
SSW
0.7
SSW
0.9
SSW
0.9
SSW
0.9
SSW
1.1
SW
1.8
SW
1.6
SW
0.9
SSW
1.4
WSW
2.5
WSW
3.5
WSW
2.1
SW
4
WSW
3.5
SW
4
SW
Period(s) (?)11141312121110109987887131616151413
Wave
Graph
(?)Metric surfscale
Energy kJ (?)801032492642352148614812413115131829981203229351202061768350205899
Wind
(km/h)
10
SW
5
SW
10
NW
10
SSW
5
WSW
20
W
20
WSW
20
SW
10
ENE
15
W
30
WSW
15
WSW
25
W
25
WSW
15
WNW
30
WSW
25
WSW
20
W
35
W
35
WSW
25
WSW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off
cross-
off
cross-
off
cross-
off
glassoffcross-
off
cross-
off
cross-
on
offoffoffoffoffoffoffoffoffoffoffcross-
off
High Tide
/ height (m)
1:06PM
2.08
12:05AM
1.42
1:46PM
2.18
12:51AM
1.46
2:21PM
2.27
1:33AM
1.51
2:54PM
2.33
2:11AM
1.55
3:26PM
2.36
2:50AM
1.59
3:56PM
2.35
3:28AM
1.61
4:26PM
2.31
4:09AM
1.62
Low Tide
/ height (m)
7:39PM
1.10
6:31AM
0.44
8:17PM
1.05
7:11AM
0.40
8:50PM
1.01
7:49AM
0.36
9:21PM
0.96
8:25AM
0.34
9:51PM
0.91
9:00AM
0.34
10:21PM
0.86
9:35AM
0.36
10:51PM
0.79
Thursday
18
Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Sunrise5:54--5:54--5:54--5:56--5:56--5:56--5:56--
Sunset-8:46--8:47--8:49--8:49--8:50--8:50--8:51-
clear
part cloud
part cloud
part cloud
cloud
part cloud
part cloud
clear
part cloud
rain showers
rain showers
part cloud
clear
part cloud
rain showers
rain showers
part cloud
part cloud
part cloud
rain showers
cloud
Rain (mm)
---------11---21---1-
Temp. °C262622232419151713141514161816151614161513
Feels °C (?)24222021231711121012981113128109976
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder

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Information about the Marengo Surf forecast

The above surf forecast table for Marengo provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Marengo can be found by selecting the local surf guide option on the grey menu. Our Marengo 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 (Marengo) 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 Marengo 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.

Marengo is 93 km (58 miles) from the city of Geelong West. If you plan a holiday in Cape Otway, look for hotels and other accommodation in Geelong West. Geelong West has rooms for a wide range of budgets as well as car hire and transport links.

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