Marengo Surf Break

Lat Long: 38.78° S 143.67° E

Marengo Surf Forecast and Surf Report

Issued: 9 am 06 Sep 2026 (local time)

Forecast update in  hr  min

Today's Marengo sea temperature is
13.9°C
0.7° 

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


Marengo surf forecast from 6 Sep 2026:

  • Best quality surf: Wednesday 9 Sep, 1PM (local time) - 15ft (4.5m), 19s period, SW swell with cross-offshore winds.
  • Most powerful swell: Wednesday 9 Sep, 4PM (local time) - 18ft (5.5m), 18s period, SW swell with 18,980 kJ wave energy.
  • Next surfable swell (1★+): Sunday 6 Sep, 4PM (local time) - 4.5ft (1.3m), 14s 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 Sunday (Sep 06) at 4PM. The primary swell is predicted to be 1.3m and 14s period with a secondary swell of 0.8m and 7s. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Marengo in the next 16 days are 5.5m 18s 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 0.8m 4s period and expected on Tuesday (Sep 08) at 4PM.

Wave TypeTime (AEST) & Date Wave Height & Period
Next good surf (1 star+) 4PM (Sun 6th Sep)4.5ft (1.3m) 14s
Best Surf 1PM (Wed 9th Sep)15ft (4.5m) 19s
Most Powerful 4PM (Wed 9th Sep)18ft (5.5m) 18s

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


The Lowdown

Alright folks, Rusty here. Let’s break down what’s happening at Marengo over the next couple of weeks.

First up, the water is sitting at about 57°F, which is normal for the season – nothing crazy.

We kick off Sunday, September 6th, with a solid start. Morning sees a clean 5ft swell from the SW with a lovely 14-second period. The wind is light offshore from the W, so it’s glassy and clean. The combined energy is moderate at 968, which is plenty for a fun session. This is a good one for the beginners, given the size. The afternoon picks up a bit of breeze but stays clean.

Monday the 7th is a bit of a mixed bag. Rain showers in the morning with a weaker 3ft swell and cross-off winds, so the surf is poor. The afternoon, however, sees a jump to 6ft from the SW, but the cross-off wind keeps it a bit messy. The energy jumps to 1590, so there’s punch, but the quality is questionable.

Now, Tuesday the 8th is where it starts to get interesting. Morning brings a clean 4ft, 18-second groundswell. That’s a long period, which means great shape and energy, but it might be a bit too straight for the beach, so keep it on the point. The wind is light offshore, and the energy is a solid 1375. This is excellent for experienced surfers. The afternoon is a bit bigger at 6ft with a moderate offshore wind.

Wednesday the 9th is a big one, but it’s pretty much for experts only. The morning sees a massive 13ft SW swell with a 16-second period and a combined energy of 12495. The wind is cross-off, but honestly, that’s a lot of water. The afternoon is even bigger at 18ft and 18 seconds, with energy hitting 27495. That’s too big for this break, so unless you’re a pro, sit this one out.

The swell drops back Thursday the 10th, but it’s still solid. The morning is 12ft with cross-off winds, which is marginal. The afternoon is a better 10ft with offshore winds, making for excellent conditions for experienced surfers. Energy is still high at 4784.

Friday the 11th offers a nice 7ft in the morning, but it’s a bit messy with cross-off winds. The afternoon cleans up with a 7ft SW swell and light cross-off winds, making for excellent conditions. Energy is 1785.

Saturday the 12th is a bit of a wildcard. The morning has a light cross-on breeze from the NE, so it’s a bit choppy. But the afternoon? The wind goes glassy, with a 5ft SW swell and a 15-second period. That’s a real treat – clean, long-period waves. Energy is 1048, and it’s a great option for the afternoon session.

The second week starts to taper off. Sunday the 13th is poor with strong cross-off winds, though the afternoon picks up a bit. Monday the 14th has strong offshore winds, but the swell is small and the period is short, making it hard to paddle into. Energy is low.

The standout of the whole forecast, without a doubt, is Tuesday the 15th. The morning session is shaping up to be epic. A 16ft WSW swell with a 14-second period, clean offshore wind from the W, and a combined energy of 15301. That’s strong wave energy, and for expert surfers, this is exceptional. The afternoon is still good at 10ft, but the morning is the one to circle on the calendar. It’s a week and a half out, so keep an eye on it, but it looks promising.

After that, Wednesday the 16th has a decent 7ft morning with offshore wind, but it gets big and messy in the afternoon. Thursday the 17th has cross-on winds and big swell, making it choppy. Friday the 18th is small and clean, and Saturday the 19th offers a nice 4ft, 19-second groundswell in the afternoon with light offshore wind – a good little session for the weekend.

The last day, Sunday the 20th, finishes strong with a clean 7ft SW swell in the morning, with gentle offshore winds and energy of 2038. That’s a solid note to end on.

Overall, there’s a big gap of poor surf from the 13th to the 14th, but the real gems are Tuesday the 8th for the long-period groundswell and Tuesday the 15th for the big, powerful swell. If you’re after clean, fun waves, the glassy afternoon on Saturday the 12th is a winner.

Later, Rusty.

Short Range Forecast

Light rain (total 3mm), mostly falling on Mon morning. Very mild (max 14°C on Sun morning, min 6°C on Mon night). Winds increasing (light winds from the SW on Mon night, fresh winds from the SW by Tue night).

Days 4-6 Weather Summary

Mostly dry. Very mild (max 12°C on Thu morning, min 7°C on Fri night). Winds decreasing (fresh winds from the SW on Wed morning, calm by Fri night).

Sunday
6
Monday
7
Tuesday
8
Wednesday
9
Thursday
10
Friday
11
Saturday
12
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
4
0
3
4
4
4
4
7
!
7
4
5
4
3
4
3
3
3
3
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.4
SW
14
1.3
SW
14
2.3
WSW
12
0.8
SW
13
1.9
SW
13
1.5
SSW
14
1.2
SW
18
1.8
SW
17
3
SW
16
4
SW
16
5.5
SW
18
4
SW
17
3.5
SSW
16
3
SSW
16
2.5
SW
15
2.2
SW
14
2.1
SW
14
2.3
SW
16
1.9
SW
15
1.6
SW
15
1.3
SW
15
Wave Graph
Metric surfscale
Energy kJ
821
612
1468
193
1112
862
881
1795
4896
6675
18980
9338
6339
4784
2736
1876
1785
2627
1650
1048
686
Wind (km/h)
15
W
20
W
20
WSW
25
SSW
20
SSW
5
SW
10
W
25
W
30
SW
30
SW
30
SW
25
WSW
20
SW
20
WSW
15
W
15
SW
10
SSW
5
NNE
5
NE
5
NNE
15
NNW
Wind State
off
off
off
cross-off
cross-off
cross-off
off
off
cross-off
cross-off
cross-off
cross-off
cross-off
off
off
cross-off
cross-off
cross
cross-on
glassy
cross-off
High Tide
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
12:30PM1.85m
00:56AM2.06m
1:20PM2.08m
1:32AM2.11m
Low Tide
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
6:36AM0.75m
6:42PM0.57m
7:11AM0.53m
7:29PM0.53m
clear
part cloud
part cloud
rain showers
clear
clear
clear
clear
rain showers
part cloud
part cloud
part cloud
cloud
part cloud
clear
clear
clear
part cloud
part cloud
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:41
6:39
6:37
6:37
6:35
6:33
6:31
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:06
6:07
6:07
6:08
6:09
6:10
6:12
 mm
1
2
Temp °C
14
13
12
12
10
9
13
12
11
11
11
11
12
12
10
11
10
7
17
18
14
Feels °C
10
8
7
6
5
6
8
6
5
3
4
5
9
9
7
8
7
6
14
16
8
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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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