Marengo Surf Break

Lat Long: 38.78° S 143.67° E

Marengo Surf Forecast and Surf Report

Issued: 9 pm 05 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 5 Sep 2026:

  • Best quality surf: Wednesday 9 Sep, 1PM (local time) - 13ft (4.0m), 19s period, SW swell with cross-offshore winds.
  • Most powerful swell: Wednesday 9 Sep, 7PM (local time) - 18ft (5.5m), 18s period, SW swell with 19,952 kJ wave energy.
  • Next surfable swell (1★+): Sunday 6 Sep, 4AM (local time) - 10ft (3.0m), 13s 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 4AM. The primary swell is predicted to be 3.0m and 13s period with a secondary swell of 2.1m and 14s. 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 7PM. Winds are predicted to be cross-offshore at the time the swell arrives.

Wave TypeTime (AEST) & Date Wave Height & Period
Next good surf (1 star+) 4AM (Sun 6th Sep)10ft (3.0m) 13s
Best Surf 1PM (Wed 9th Sep)13ft (4.0m) 19s
Most Powerful 7PM (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 have a proper look at what’s on the cards for Marengo over the next couple of weeks.

First up, we’ve got a bit of a wait on our hands. The surf doesn’t really get going until Saturday afternoon, but once it does, there’s a solid run of swell. The water’s running at about 57°F, which is pretty much spot on for this time of year, so nothing weird going on there.

Saturday afternoon kicks things off with a 7ft SW swell, period a very long 15 seconds, and a fresh offshore wind from the WNW. That’s clean, but the energy is strong (1907) and that long period means it’ll be lining up nice on the reef and point at Marengo. It’s a bit of a handful for beginners at that size, but the setup is right.

Sunday morning is the real sweet spot. The swell drops to a friendly 4ft from the SW, still a long 14-second period, and the wind turns gentle offshore from the west. The energy is moderate (899) but the conditions are glassy and clean. This is the pick of the first week – perfect for a long session without getting smashed.

Monday morning sees a jump back up to 7ft from the SW, but the wind is cross-offshore, so it’s a bit lumpier. The energy is strong (1977), but it’s not as clean as Sunday. Monday afternoon is a write-off with a tiny 1ft swell.

Tuesday brings it back on. Morning is 4ft with a 18-second period and offshore wind – really nice shape. The afternoon builds to 5ft with a 17-second period and offshore wind, and the energy is solid (1569). That afternoon session is a standout for experienced surfers.

Now, Wednesday the 9th and Thursday the 10th see a big pulse. Wednesday morning pumps 13ft from the SW, but the wind is cross-offshore and the energy is massive (12370). That’s expert-only territory. Wednesday afternoon is 18ft – that’s too big for this break, even with clean conditions. Thursday stays big, 13ft in the morning, dropping to 12ft in the afternoon with offshore wind. The energy is still huge, but the afternoon is cleaner and more manageable for experienced surfers.

Friday the 11th settles back to a solid 7ft SW swell with clean conditions. The energy is still strong (2032), and it’s a good day for anyone comfortable with a bit of size.

Saturday the 12th is a gem. The swell is 7ft in the morning, 6ft in the afternoon, both from the SW with long periods, and the wind goes glassy – completely dead. That’s about as good as it gets for a clean, lined-up point break. The energy is strong (2190), but the conditions are perfect.

The second week gets a bit patchy. Sunday the 13th is small, 4ft and 4ft, with offshore wind and clean shape. Monday the 14th is a write-off – tiny, poor quality, and strong wind. Not worth paddling out.

Then, Tuesday the 15th and Wednesday the 16th see another big pulse. Tuesday afternoon is 15ft from the WSW with a 15-second period and offshore wind. The energy is extreme (12445), and this is for experts only. Wednesday morning is 13ft with offshore wind, still huge. By Wednesday afternoon, it’s 13ft but the wind is stronger, so it’s a bit raw.

Thursday the 17th morning is a surprise – 10ft from the SW, 16-second period, and glassy conditions. That’s a very clean, big-wave session for the crew who can handle it. The energy is still very strong (4039).

After that, the surf fades. Friday the 18th is small and messy, Saturday the 19th is 4ft to 5ft with offshore wind but only moderate energy, and Sunday the 20th finishes with a 8ft SW swell, 19-second period, and offshore wind. The energy is very strong (8087), and that’s a solid, powerful end to the outlook for experienced surfers.

Overall, the best windows are Sunday morning the 6th for a mellow, clean session, and Saturday the 12th for glassy perfection. The big pulses mid-week are for the hardcore crew only.

Rusty.

Short Range Forecast

Some drizzle, heaviest during Mon morning. Very mild (max 15°C on Sun morning, min 7°C on Mon night). Winds decreasing (strong winds from the W on Sat night, light winds from the SW by Mon night).

Days 5-7 Weather Summary

Light rain (total 2mm), mostly falling on Tue night. Very mild (max 12°C on Wed afternoon, min 8°C on Fri afternoon). Winds decreasing (fresh winds from the SSW on Tue night, light winds from the SW by Fri afternoon).

Sunday
6
Monday
7
Tuesday
8
Wednesday
9
Thursday
10
Friday
11
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
4
3
3
4
1
1
4
4
4
6
7
!
8
6
5
4
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)
3.5
SW
13
1.4
SW
14
1.3
SW
14
2.2
WSW
12
1.2
SW
13
1.5
SSW
8
1.6
SSW
14
1.2
SW
18
1.6
SW
17
4
SW
16
4
SW
16
5.5
SW
18
4.5
SSW
18
4
SSW
17
3
SW
16
2.5
SW
15
2.2
SW
14
2.3
SW
15
2.4
SW
16
Wave Graph
Metric surfscale
Energy kJ
3675
821
612
1316
451
257
969
881
1519
8168
6762
17790
11084
8260
5352
2848
1929
2246
2954
Wind (km/h)
30
WSW
15
W
20
W
20
WSW
25
SSW
20
SSW
5
SW
15
W
25
WSW
30
SSW
25
SW
30
SW
25
SW
15
WSW
20
WSW
15
W
15
SW
15
SW
5
N
Wind State
off
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
glassy
High Tide
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
12:30PM1.85m
00:56AM2.06m
Low Tide
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
6:36AM0.75m
6:42PM0.57m
part cloud
clear
part cloud
part cloud
rain showers
clear
clear
clear
clear
rain showers
cloud
clear
part cloud
part cloud
part cloud
clear
clear
clear
clear
<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
<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
 mm
1
2
Temp °C
12
15
14
12
12
11
9
13
12
11
11
12
10
11
11
10
11
10
7
Feels °C
5
11
10
7
7
6
6
8
7
5
4
5
5
7
7
7
7
7
6
  • 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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