Marengo surfForecast / VIC – Cape Otway / Australia

information circle16 Day Weather and Surf, issued 3 am Monday 18 May 2026 AEST
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
15.9° C
(Which is slightly warmer than usual)

Best Forecast Surf Conditions for Marengo this week:

The surf forecast for Marengo over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (May 18) at 7AM. The primary swell is predicted to be 1.1m and 13s period with a secondary swell of 0.3m and 8s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Marengo in the next 16 days are 2.5m 12s and forecast to arrive on Sunday (May 24) at 10PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 5s period and expected on Wednesday (May 20) at 7PM.

Wave TypeTime (AEST) & Date Wave Height & Period
Next good surf (1 star+) 7AM (Mon 18th May)3.5ft (1.1m) 13s
Best Surf 7PM (Tue 19th May)7ft (2.1m) 11s
Most Powerful10PM (Sun 24th May)8ft (2.5m) 12s

Table - best surf conditions forecast for Marengo over the next 16 days.


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Some drizzle, heaviest during Wed morning. Very mild (max 15°C on Mon morning, min 11°C on Mon night). Wind will be generally light.

Days 4-6 Weather Summary

Light rain (total 3mm), mostly falling on Sat night. Very mild (max 15°C on Sat morning, min 10°C on Fri night). Wind will be generally light.

Monday
18
Tuesday
19
Wednesday
20
Thursday
21
Friday
22
Saturday
23
Sunday
24
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
2
2
2
2
3
2
2
2
2
3
3
1
1
0
2
2
2
1
3
4
4
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.1
SW
13
1
SW
12
0.9
SW
12
0.6
SW
12
1.6
SW
11
1.6
SW
11
0.6
SW
17
1.5
SW
10
0.8
SW
16
1.3
SW
14
1.3
SW
14
1
SW
12
1.1
SW
13
1.3
SW
14
1.4
SW
15
1.2
SW
14
1
SW
13
0.8
SW
12
2.2
WSW
8
2
SW
12
2.5
SW
11
Wave Graph
Metric surfscale
Energy kJ
424
297
248
114
589
606
232
442
352
736
726
295
386
641
836
526
331
178
557
1088
1744
Wind (km/h)
0
SE
5
SE
10
NW
15
WSW
20
WSW
20
WSW
15
WSW
20
SW
5
WSW
10
WSW
10
SW
5
N
5
NE
10
ENE
10
N
10
NW
10
NW
20
SSW
10
WSW
20
W
20
W
glassy
glassy
cross-off
off
off
cross-off
cross-off
cross-off
off
off
cross-off
cross
cross-on
on
cross
cross-off
cross-off
cross-off
cross-off
off
off
High Tide
12:37PM1.76m
2:01AM2.61m
1:22PM1.83m
2:42AM2.61m
2:07PM1.86m
3:23AM2.54m
2:55PM1.85m
4:05AM2.41m
3:48PM1.79m
4:48AM2.25m
4:48PM1.70m
5:34AM2.07m
6:03PM1.61m
Low Tide
7:01PM-0.02m
8:16AM0.85m
7:45PM-0.07m
8:55AM0.81m
8:29PM-0.04m
9:36AM0.77m
9:15PM0.07m
10:20AM0.73m
10:01PM0.25m
11:09AM0.70m
10:51PM0.49m
12:03PM0.67m
11:50PM0.74m
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
rain showers
clear
part cloud
part cloud
clear
part cloud
cloud
cloud
cloud
cloud
cloud
light rain
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:22
7:22
7:24
7:24
7:24
7:26
7:26
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:20
5:19
5:17
5:17
5:16
5:15
5:15
1
3
Temp °C
15
15
13
15
14
13
15
14
13
14
14
12
14
13
11
15
15
13
13
12
13
14
14
12
12
9
8
10
10
12
12
13
12
12
11
9
13
13
10
8
7
8
Swell 1
Height (m)
Direction
Period (s)
1.1
SW
13
1
SW
12
0.9
SW
12
0.6
SW
12
1
SW
11
0.8
SSW
6
0.9
SW
10
0.8
SW
16
0.8
SW
16
1.3
SW
14
1.3
SW
14
1
SW
12
1.1
SW
13
1.3
SW
14
1.4
SW
15
1.2
SW
14
1
SW
13
0.8
SW
12
1.1
SW
8
1.2
SW
12
0.9
SSW
7
Energy kJ
424
297
248
114
237
41
167
310
352
736
726
295
386
641
836
526
331
178
151
421
89
Swell 2
Height (m)
Direction
Period (s)
0.3
ESE
8
0.3
ESE
9
0.3
ESE
9
0.6
WSW
12
0.4
SW
18
0.8
SW
11
0.6
SW
17
0.7
SW
10
0.9
SW
12
0.2
ESE
10
0.2
ESE
10
0.6
SW
15
0.2
ESE
10
0.2
E
10
0.2
E
10
0.1
E
10
0.5
SW
13
0.6
SSW
12
0.6
SW
12
0.5
SW
8
0.9
WSW
12
Energy kJ
14
16
17
94
112
140
232
100
202
11
11
139
10
8
8
2
85
94
124
28
239
Swell 3
Height (m)
Direction
Period (s)
0.1
SW
21
0.1
SW
21
0.3
SW
20
0.2
ESE
9
0.6
SW
18
0.2
ESE
10
0.6
WSW
12
0.6
S
6
0.1
S
14
0.1
S
14
0.2
ESE
11
0.1
S
16
0.1
E
9
0.1
E
9
0.4
SSW
11
0.1
E
11
0.3
SSW
14
Energy kJ
18
17
60
8
199
9
90
22
4
4
11
5
2
2
45
2
36
Wind waves
Height (m)
Direction
Period (s)
1.6
SW
11
1.6
SW
11
1.5
SW
10
0.6
WSW
6
2.2
WSW
8
2
SW
12
2.5
SW
11
Energy kJ
589
606
442
24
557
1088
1744
Nearest Offshore or Glassy
Rating
(10 max)
2
2
2
2
3
3
2
4
2
3
3
2
4
4
4
2
2
3
3
4
4
Distance (km)
0
0
0
0
0
35
0
182
0
0
0
2
18
18
18
0
0
37
0
0
0
Best forecast wave conditions in Cape Otway
Rating
(10 max)
3
3
2
2
3
3
3
3
4
3
3
3
2
4
3
3
3
3
4
4
Best forecast wave conditions in Australia
Rating
(10 max)
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
3
4
4
Header Global
Rating
(10 max)
6
4
5
4
4
4
4
4
5
4
5
5
4
4
5
5
4
5
4
4
4
  • 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 16 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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