Marengo surfForecast / VIC – Cape Otway / Australia

information circle12 Day Weather and Surf, issued 10 am Sunday 21 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
17.0° C
(Which is 1.4°C warmer than 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 Monday (Dec 22) at 2AM. The primary swell is predicted to be 1.1m and 6s period with a secondary swell of 0.4m and 12s. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Marengo in the next 12 days are 4.0m 17s and forecast to arrive on Tuesday (Dec 23) at 8PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 6s period and expected on Monday (Dec 22) at 2AM.

Wave TypeTime (AEDT) & Date Wave Height & Period
Next good surf (1 star+) 2AM (Mon 22nd Dec)3.5ft (1.1m) 6s
Best Surf 8PM (Tue 23rd Dec)13ft (4.0m) 17s
Most Powerful 8PM (Tue 23rd Dec)13ft (4.0m) 17s

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

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Heavy rain (total 26mm), heaviest during Sun afternoon. Very mild (max 16°C on Mon afternoon, min 12°C on Sun night). Winds increasing (light winds from the ESE on Sun afternoon, fresh winds from the WSW by Mon night).

Days 3-6 Weather Summary Mostly dry. Very mild (max 16°C on Wed morning, min 11°C on Thu night). Winds decreasing (fresh winds from the WSW on Wed morning, light winds from the E by Fri night).

Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
Friday
26
Saturday
27
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
0
0
1
2
2
1
2
4
4
7
7
7
4
3
2
2
0
1
0
0
1
Swell
Height Map
Wave Height (m) & direction (?)
1
SSW
0.9
SSW
1.1
SSW
1.5
SW
1.7
WSW
1.7
SW
1.9
SW
2.1
SW
2.3
SW
4.5
SW
4.5
SW
4.5
SW
3.5
SW
2.5
SSW
2.1
SSW
1.7
SSW
1.4
SW
1.3
SSW
1.2
SW
0.7
SW
0.9
SW
Period(s) (?)98677891816151414131313121212161615
Wave
Graph
(?)Metric surfscale
Energy kJ (?)1471128521625932655427772736808280157864378120671442876587477757245355
Wind
(km/h)
10
ENE
15
S
25
WSW
25
WSW
20
W
30
WSW
25
WSW
25
WSW
20
W
30
WSW
30
WSW
25
SW
25
SSW
20
SSW
20
SSE
10
SSE
15
SE
10
ESE
15
ENE
15
E
10
NE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
oncrossoffoffoffoffoffoffoffoffcross-
off
cross-
off
cross-
off
cross-
off
crosscross-
on
cross-
on
onononcross-
on
High Tide
/ height (m)
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
4:55PM
2.23
4:53AM
1.64
5:22PM
2.13
5:43AM
1.66
5:50PM
2.00
Low Tide
/ height (m)
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
10:11AM
0.43
11:20PM
0.71
10:48AM
0.54
11:50PM
0.62
11:29AM
0.68
12:23AM
0.52
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
Friday
26
Saturday
27
Sunrise5:56--5:56--5:56--5:56--5:58--5:58--5:58--
Sunset-8:49--8:50--8:50--8:51--8:51--8:51--8:52-
cloud
heavy rain
rain showers
part cloud
part cloud
rain showers
part cloud
clear
part cloud
part cloud
clear
part cloud
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
Rain (mm)
-1212--2---------------
Temp. °C141413141615141514161613131413131413192018
Feels °C (?)1214109111189910107798101111161617
  • 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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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Marengo 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.


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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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