Marengo surfForecast / VIC – Cape Otway / Australia

information circle12 Day Weather and Surf, issued 4 pm Tuesday 16 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 Wednesday (Dec 17) at 8PM. The primary swell is predicted to be 0.9m and 10s period with a secondary swell of 0.3m and 15s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Marengo in the next 12 days are 1.6m 16s and forecast to arrive on Tuesday (Dec 23) at 11PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 6s period and expected on Saturday (Dec 20) at 8AM.

Wave TypeTime (AEDT) & Date Wave Height & Period
Next good surf (1 star+) 8PM (Wed 17th Dec)3ft (0.9m) 10s
Best Surf 8PM (Tue 23rd Dec)5ft (1.5m) 16s
Most Powerful11PM (Tue 23rd Dec)5ft (1.6m) 16s

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 25°C on Thu afternoon, min 11°C on Tue night). Wind will be generally light.

Days 3-6 Weather Summary Mostly dry. Warm (max 22°C on Fri afternoon, min 12°C on Sat night). Winds increasing (calm on Sat night, fresh winds from the WSW by Sun afternoon).

Tue
16
Wednesday
17
Thursday
18
Friday
19
Saturday
20
Sunday
21
Monday
22
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
Rating
(10 max)
1
0
0
0
0
1
0
2
2
1
1
1
0
0
0
0
0
2
1
2
0
Swell
Height Map
Wave Height (m) & direction (?)
1.5
SSW
1.3
SSW
0.9
SSW
0.9
SSW
0.6
S
0.6
SW
0.5
SW
0.9
SW
0.9
SSW
0.9
SW
0.9
SSW
0.7
SSW
0.6
SSW
0.8
SSW
0.9
SSW
0.8
SSW
0.7
SSW
0.6
SW
0.6
SW
0.6
SW
0.8
SW
Period(s) (?)1110101091114131212101010988812121214
Wave
Graph
(?)Metric surfscale
Energy kJ (?)50333917313564801032532601951631007192103767011692124231
Wind
(km/h)
10
SE
15
NE
5
E
5
SE
10
NNE
10
S
10
S
10
NNW
5
SW
15
SW
20
W
20
WSW
25
SW
10
ENE
20
SW
30
WSW
25
WSW
25
WSW
25
WSW
10
WSW
20
SW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on
cross-
on
oncross-
on
crosscross-
off
crosscross-
off
glasscross-
off
offoffcross-
off
oncross-
off
offoffoffoffoffcross-
off
High Tide
/ height (m)
10:07PM
1.43
12:21PM
1.95
11:10PM
1.41
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
Low Tide
/ height (m)
5:42PM
1.20
4:57AM
0.52
6:50PM
1.15
5:47AM
0.49
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
Tue
16
Wednesday
17
Thursday
18
Friday
19
Saturday
20
Sunday
21
Monday
22
Sunrise--5:54--5:54--5:54--5:54--5:56--5:56--5:56
Sunset8:45--8:46--8:46--8:47--8:49--8:49--8:50--
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
clear
clear
part cloud
part cloud
part cloud
part cloud
clear
clear
rain showers
clear
Rain (mm)
-------------------1-
Temp. °C131321232124252324221816171316171415161514
Feels °C (?)111120212022222023201712121013148910119
  • 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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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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