Marengo Surf Break

Lat Long: 38.78° S 143.67° E

Marengo Surf Forecast and Surf Report

Issued: 3 am 04 Sep 2026 (local time)

Forecast update in  hr  min

Today's Marengo sea temperature is
14.1°C
1.0° 

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


Marengo surf forecast from 3 Sep 2026:

  • Best quality surf: Wednesday 9 Sep, 1PM (local time) - 16ft (5.0m), 19s period, SW swell with cross-offshore winds.
  • Most powerful swell: Wednesday 9 Sep, 4PM (local time) - 18ft (5.5m), 19s period, SW swell with 20,887 kJ wave energy.
  • Next surfable swell (1★+): Friday 4 Sep, 1PM (local time) - 10ft (3.0m), 16s period with SW 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 Friday (Sep 04) at 1PM. The primary swell is predicted to be 3.0m and 16s period. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Marengo in the next 16 days are 5.5m 19s and forecast to arrive on Wednesday (Sep 09) 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 1.0m 5s period and expected on Monday (Sep 07) at 1AM.

Wave TypeTime (AEST) & Date Wave Height & Period
Next good surf (1 star+) 1PM (Fri 4th Sep)10ft (3.0m) 16s
Best Surf 1PM (Wed 9th Sep)16ft (5.0m) 19s
Most Powerful 4PM (Wed 9th Sep)18ft (5.5m) 19s

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


The Lowdown

Alright folks, Rusty here. Let’s have a look at what Marengo has on the table for the next couple of weeks. It’s a solid run of activity, but it’s not all plain sailing, so you’ll need to pick your moments.

The first real action kicks off on Friday the 4th with a powerful SW groundswell rolling in. We’re talking 10 ft of swell with a long 16-second period, packing a hefty combined energy reading of around 3866. The wind is a cross-offshore breeze, so the wave faces will be clean, but with that size and power, this one is for the experienced crew only. Beginners should absolutely sit this one out.

Saturday the 5th stays big and clean, especially in the afternoon with a strong offshore wind hitting 28 mph. The swell is still a solid 10 ft from the SW, and the energy jumps right up to 6492. Those winds will make the takeoff a real battle, but if you can get in, the waves will be glassy and well-shaped. It’s a serious session for the experts.

The real sweet spot looks like Sunday the 6th. The swell drops back a touch to 6 ft, but it’s still a long-period SW groundswell (14 seconds). The morning brings a gentle offshore breeze, making for clean, user-friendly conditions. The energy is a moderate 1469, and the wave comment is describing excellent conditions. This is where it gets good for a wider range of surfers, though the size might still push it for the absolute beginners.

Monday the 7th morning keeps the quality with a clean 7 ft SSW swell and a moderate offshore breeze. This is another excellent window for experienced surfers. The afternoon drops off significantly, so make the most of the morning session.

We get a little lull on Tuesday the 8th with a smaller, but very clean, 4 ft swell in the morning with almost no wind. That’s a sneaky good session for a log or a fun mid-length if the banks are holding. The afternoon picks up to 6 ft with a cross-off breeze and a very long 17-second period, offering good shape.

Hold onto your boards for Wednesday the 9th. The swell is back with a vengeance. The morning sees an 11 ft SW groundswell with a 17-second period and a combined energy of 12561. The wind is fresh and cross-offshore, so it’s clean but pumping. This is big, powerful, and for experts only. The afternoon is even bigger at 13 ft, but the wind goes cross-shore, putting some lump on the face.

Thursday the 10th through the 11th is a period of declining but still substantial swell, ranging from 13 ft down to 6 ft. However, the wind turns onto the cross-onshore side, which will make conditions choppier and less inviting. There will be waves, but the quality drops off for a couple of days.

We hit a bit of a flat patch from Saturday the 12th through Monday the 14th. The swell drops below 4 ft and onshore or strong cross-onshore winds kill any real quality. This stretch is a write-off for a decent paddle session.

The second week looks promising again, but more of a long-range watch. Wednesday the 16th is a huge standout in the forecast. The afternoon shows a powerful 15 ft WSW swell with a very long 17-second period. The combined energy is a massive 15536. It’s cross-offshore and clean. This is a serious, serious swell that will light up the reef and point. This is definitely the best session on offer, but it is a big, expert-only day.

Thursday the 17th is absolutely monstrous, with 23 ft SW swells and energy readings over 45000. The wind is cross-shore. While the conditions are predicted to be favorable for the wind and tide, the swell is simply too big for this break, even for experts. It would be a spectacle to watch, but not to paddle.

The run of swell finally winds down on Friday the 18th with a still-very-solid 13 ft SW swell in the morning. The wind is a gentle cross-offshore, and the conditions are described as exceptional for expert surfers. It’s a big way to finish the weekend.

The key takeaway? Marengo is not for the faint of heart over the next two weeks. The true standout for the biggest, best, and most powerful session is the afternoon of Wednesday the 16th, with that 15 ft WSW groundswell and clean conditions. For a more moderate but still excellent session, the morning of Monday the 7th and that glassy morning on Sunday the 6th are your best bets. Keep an eye on the sky, and be ready for the big stuff.

Rusty.

Short Range Forecast

Light rain (total 7mm), mostly falling on Fri night. Very mild (max 15°C on Fri morning, min 10°C on Sun night). Winds increasing (light winds from the WNW on Fri morning, strong winds from the WNW by Sat afternoon).

Days 4-6 Weather Summary

Light rain (total 5mm), mostly falling on Tue night. Very mild (max 13°C on Tue morning, min 7°C on Mon night). Winds increasing (light winds from the W on Mon night, fresh winds from the SW by Tue night).

Friday
4
Saturday
5
Sunday
6
Monday
7
Tuesday
8
Wednesday
9
Thursday
10
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
3
2
2
3
3
4
3
2
3
2
4
4
4
6
7
!
8
7
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)
3
SW
16
3
SW
16
2.5
SW
16
2.1
SW
15
3
SW
15
3.5
SW
11
1.9
SW
14
1.6
SW
14
1.3
SW
12
1.7
SW
12
1.4
SW
8
1.4
SW
14
1.3
SW
18
1.8
SW
17
4
SW
16
4.5
SW
17
5.5
SW
19
5
SSW
19
4
SSW
17
3.5
SSW
16
2.2
SSW
15
Wave Graph
Metric surfscale
Energy kJ
3866
3820
2963
1882
4295
2929
1480
975
496
874
248
822
984
1938
7970
10864
20887
15981
9890
6221
2140
Wind (km/h)
20
NW
15
NNW
25
N
30
NW
40
WNW
35
WSW
20
W
25
W
20
WSW
20
SW
15
SSW
5
W
10
W
25
W
35
SW
35
SW
35
SW
25
SSW
20
SW
20
SW
10
WSW
Wind State
cross-off
cross-off
cross
cross-off
off
off
off
off
off
cross-off
cross-off
off
off
off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
High Tide
5:16PM2.15m
4:24AM1.85m
6:06PM2.01m
4:57AM1.76m
7:10PM1.86m
5:37AM1.63m
8:43PM1.77m
6:47AM1.48m
10:19PM1.79m
9:33AM1.43m
11:28PM1.87m
11:23AM1.61m
00:17AM1.97m
Low Tide
10:27AM0.05m
11:03PM0.95m
11:05AM0.10m
11:43PM1.09m
11:49AM0.22m
00:37AM1.23m
12:46PM0.40m
2:34AM1.31m
2:18PM0.59m
4:53AM1.19m
4:21PM0.66m
5:54AM0.97m
5:43PM0.62m
clear
part cloud
light rain
rain showers
rain showers
part cloud
part cloud
part cloud
part cloud
rain showers
clear
clear
clear
clear
rain showers
part cloud
cloud
part cloud
part cloud
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:43
6:43
6:41
6:39
6:37
6:37
6:35
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:05
6:06
6:06
6:07
6:07
6:08
6:09
 mm
4
2
1
1
4
Temp °C
15
14
15
14
12
12
14
14
12
12
11
8
13
13
11
11
11
11
11
11
10
Feels °C
11
10
10
8
4
5
10
9
8
7
7
6
8
7
5
2
3
5
6
6
7
  • 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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