Marengo Surf Break

Lat Long: 38.78° S 143.67° E

Marengo Surf Forecast and Surf Report

Issued: 9 am 25 Aug 2026 (local time)

Forecast update in  hr  min

Today's Marengo sea temperature is
14.0°C
0.8° 

Marengo surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Marengo surf forecast from 25 Aug 2026:

  • Best quality surf: Sunday 30 Aug, 1PM (local time) - 10ft (3.0m), 17s period, SSW swell with cross-offshore winds.
  • Most powerful swell: Sunday 30 Aug, 4PM (local time) - 10ft (3.0m), 17s period, SSW swell with 5,110 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 26 Aug, 7PM (local time) - 3.5ft (1.1m), 11s period with SSW swell.

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 Wednesday (Aug 26) at 7PM. The primary swell is predicted to be 1.1m and 11s period with a secondary swell of 0.8m and 13s. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Marengo in the next 16 days are 3.0m 17s and forecast to arrive on Sunday (Aug 30) at 4PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 5s period and expected on Tuesday (Sep 01) at 10AM.

Wave TypeTime (AEST) & Date Wave Height & Period
Next good surf (1 star+) 7PM (Wed 26th Aug)3.5ft (1.1m) 11s
Best Surf 1PM (Sun 30th Aug)10ft (3.0m) 17s
Most Powerful 4PM (Sun 30th Aug)10ft (3.0m) 17s

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


The Lowdown

Alright, this is Rusty, checking in with your local surf outlook for Marengo.

We’ve got a bit of a slow start, but don’t write the week off. The real juice is building up later, with a couple of absolute standouts that have me proper excited. The water temp is sitting around 57°, which is pretty much what you’d expect for this time of year.

First up, Tuesday the 25th morning. It’s not the biggest, but it’s clean. We're looking at a 5ft SW swell (moderate wave energy, 1041) with a 13-second period and light NW cross-off winds. That’s a solid, workable wave for the beginner-friendly Marengo reef and point setup. The afternoon drops off a bit in size and the wind picks up, so get on it early.

Wednesday the 26th is a write-off for quality; the wind is up, making things messy. Thursday the 27th offers a tiny relief with a clean 3ft SSW swell in the morning, but it’s small.

Alright, here’s where it gets good. Friday the 28th is your first standout morning. The swell jumps to 5ft from the SW, with a very long 18-second period and light wind. The combined energy is strong (1652). This is proper groundswell, offering unreal shape and power on the point. It’s not for beginners at over 5ft, but experienced surfers will be in heaven. That long period means the sets will be clean and well-spaced.

Saturday the 29th keeps the quality high. The morning has a clean 4ft SW swell with offshore wind, and by the afternoon it’s pushing 6ft with moderate offshore breezes (energy jumping to 2034). This is excellent.

Sunday the 30th is the biggest call of the first week. Morning sees 8ft SSW groundswell (strong energy at 3639) with a 17-second period and light cross-off winds. The afternoon pumps up to 10ft (very strong energy, 5110). This is big, powerful stuff – expert-only territory. You’ll need your wits about you. Monday the 31st is a gem, with a 7ft SW swell and glassy conditions. That’s a rare combo.

The first few days of September thin out a bit, with onshore winds and messy conditions from the 1st to the 4th. There’s some swell, but the quality just isn’t there.

Now, for the true, late-period standout: Saturday the 5th of September. The morning is ridiculous. A massive 13ft WSW swell (exceptional energy, 8681) with glassy, off-conditions. This is as good as it gets for the experts. The afternoon bumps up to 16ft SW, but the wind swings cross-onshore, which will chop it up. The morning session is the one to circle on your calendar. It’s a week and a half out, so it’s a promising long-range call.

After that, Monday the 7th cleans up again with a 7ft SSW swell, and Tuesday the 8th afternoon offers a surprise with a 3ft SW swell but a period of 20 seconds – super long period, fantastic for the point, producing great shape even at that size.

So, to sum it up: don't bother this weekend, but lock in Friday the 28th morning for the first real score, and keep your fingers crossed for Saturday the 5th of September morning – that could be the session of the year.

Rusty.

Short Range Forecast

Light rain (total 2mm), mostly falling on Thu night. Very mild (max 14°C on Thu morning, min 8°C on Wed night). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Very mild (max 12°C on Fri morning, min 7°C on Fri night). Wind will be generally light.

Tuesday
25
Wednesday
26
Thursday
27
Friday
28
Saturday
29
Sunday
30
Monday
31
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
3
2
2
2
1
2
2
2
2
4
4
3
3
4
3
4
5
4
4
4
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.6
SW
13
1.2
SW
13
1.3
SSW
12
1.2
SSW
12
1.4
SW
13
0.9
SSW
12
0.8
SSW
11
0.4
SW
21
1.1
SW
14
1.6
SW
18
1.6
SW
16
1.4
SW
16
1.3
SW
14
1.8
SW
14
1.3
SSW
14
2.5
SSW
17
3
SSW
17
2.5
SW
16
2.1
SW
16
2
SW
16
1.7
SW
15
Wave Graph
Metric surfscale
Energy kJ
933
479
436
392
623
246
158
125
424
1634
1436
906
746
1363
561
3614
5110
3427
2214
1909
1246
Wind (km/h)
5
NW
15
WSW
15
WSW
20
SW
20
SW
10
NW
5
NW
10
WSW
20
WNW
10
SW
15
SW
10
WNW
15
W
20
WSW
10
WSW
10
SW
10
SW
5
NNW
5
NNE
5
WNW
20
NW
Wind State
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
off
cross-off
cross-off
cross-off
off
off
off
cross-off
cross-off
cross-off
cross-off
glassy
glassy
cross-off
High Tide
11:50PM1.81m
10:52AM1.33m
00:32AM1.91m
12:05PM1.48m
1:03AM2.01m
12:54PM1.66m
1:30AM2.07m
1:34PM1.85m
1:54AM2.10m
2:10PM2.02m
2:18AM2.10m
2:45PM2.16m
2:42AM2.08m
Low Tide
4:01PM0.74m
6:44AM1.17m
5:21PM0.71m
7:04AM1.03m
6:16PM0.66m
7:25AM0.89m
7:00PM0.61m
7:46AM0.73m
7:39PM0.57m
8:08AM0.57m
8:14PM0.56m
8:31AM0.41m
8:49PM0.57m
cloud
part cloud
part cloud
clear
clear
clear
clear
part cloud
rain showers
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:58
6:58
6:56
6:54
6:52
6:52
6:50
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:55
5:57
5:58
5:59
5:59
6:00
6:00
 mm
2
Temp °C
13
13
11
12
12
9
14
14
11
12
12
8
12
11
10
12
12
10
16
17
14
Feels °C
11
10
6
7
8
7
12
11
7
9
9
6
7
6
8
10
10
9
15
16
11
  • Map Icons:
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  • 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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