Marengo surfForecast / VIC – Cape Otway / Australia

information circle12 Day Weather and Surf, issued 10 am Wednesday 10 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
15.3° 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 Saturday (Dec 13) at 5AM. The primary swell is predicted to be 0.8m and 12s period with a secondary swell of 0.6m and 5s. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Marengo in the next 12 days are 4.5m 14s and forecast to arrive on Monday (Dec 15) at 2AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 6s period and expected on Saturday (Dec 13) at 11AM.

Wave TypeTime (AEDT) & Date Wave Height & Period
Next good surf (1 star+) 5AM (Sat 13th Dec)2.5ft (0.8m) 12s
Best Surf 2AM (Tue 16th Dec)7ft (2.2m) 12s
Most Powerful 2AM (Mon 15th Dec)15ft (4.5m) 14s

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 24°C on Fri afternoon, min 10°C on Wed night). Wind will be generally light.

Days 3-6 Weather Summary Some drizzle, heaviest during Sun morning. Very mild (max 16°C on Sat afternoon, min 10°C on Sat night). Winds increasing (light winds from the WSW on Sat morning, fresh winds from the WSW by Sun morning).

Wednesday
10
Thursday
11
Friday
12
Saturday
13
Sunday
14
Monday
15
Tuesday
16
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
2
2
1
0
0
0
0
0
0
1
1
1
1
3
7
4
3
4
3
3
3
Swell
Height Map
Wave Height (m) & direction (?)
1.8
SW
1.6
SW
1.3
SW
1.3
SW
1.3
SW
1.1
SW
0.9
SW
0.9
SW
0.8
SW
0.8
SW
1
SW
1.3
SW
1.7
SW
3
SW
4.5
SW
4
SW
3
SW
2.2
SSW
1.9
SSW
2.2
SW
1.7
WSW
Period(s) (?)13131312121213131212141381214131312121111
Wave
Graph
(?)Metric surfscale
Energy kJ (?)1102919572479471330273245184178404543364255981335364326714989841191698
Wind
(km/h)
5
SE
15
S
10
ESE
15
ESE
15
ESE
15
ENE
10
NE
10
E
15
WNW
20
SSW
20
SW
15
WNW
35
WSW
35
WSW
25
SW
25
SW
25
SW
15
SW
15
SW
20
SW
5
W
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on
crosscross-
on
cross-
on
ononcross-
on
oncross-
off
cross-
off
cross-
off
cross-
off
offcross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
glass
High Tide
/ height (m)
5:09PM
2.35
5:08AM
1.76
5:49PM
2.19
6:10AM
1.68
6:30PM
2.00
7:24AM
1.62
7:13PM
1.82
8:51AM
1.63
8:01PM
1.65
10:15AM
1.70
8:59PM
1.52
11:25AM
1.82
10:07PM
1.43
Low Tide
/ height (m)
10:24AM
0.21
11:30PM
0.66
11:10AM
0.42
12:17AM
0.62
11:59AM
0.65
1:07AM
0.60
12:56PM
0.88
2:02AM
0.58
2:15PM
1.09
3:01AM
0.57
4:06PM
1.19
4:02AM
0.55
5:42PM
1.20
4:57AM
0.52
Wednesday
10
Thursday
11
Friday
12
Saturday
13
Sunday
14
Monday
15
Tuesday
16
Sunrise5:52--5:52--5:52--5:52--5:54--5:54--5:54--
Sunset-8:42--8:42--8:43--8:44--8:45--8:45--8:45-
cloud
part cloud
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
clear
clear
rain showers
part cloud
part cloud
part cloud
clear
clear
part cloud
clear
clear
Rain (mm)
------------1--------
Temp. °C141412131413222420151613151512131412131413
Feels °C (?)1312910111120231811139885787101111
  • 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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