Marengo Surf Break

Lat Long: 38.78° S 143.67° E

Marengo Surf Forecast and Surf Report

Issued: 3 am 08 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 7 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, 1PM (local time) - 15ft (4.5m), 19s period, SW swell with 13,693 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 8 Sep, 7AM (local time) - 4ft (1.2m), 18s 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 Tuesday (Sep 08) at 7AM. The primary swell is predicted to be 1.2m and 18s period with a secondary swell of 1.0m and 13s. 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 4.5m 19s and forecast to arrive on Wednesday (Sep 09) at 1PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 6s period and expected on Tuesday (Sep 08) at 7PM.

Wave TypeTime (AEST) & Date Wave Height & Period
Next good surf (1 star+) 7AM (Tue 8th Sep)4ft (1.2m) 18s
Best Surf 1PM (Wed 9th Sep)15ft (4.5m) 19s
Most Powerful 1PM (Wed 9th Sep)15ft (4.5m) 19s

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 coming down the line for Marengo over the next couple of weeks.

We’ve got a bit of a slow start, but don’t let that fool you. The week ahead builds into some serious energy, and the second weekend is looking like a proper standout. The water’s sitting at 57°F right now, which is pretty much what you’d expect for this time of year. No major surprises there.

First up, Tuesday morning the 8th of September. It’s clean, it’s glassy, with a light westerly offshore breeze and a clean 4ft swell from the SW. The period is a juicy 18 seconds, so that’s proper groundswell energy. The combined energy is a solid 1272, so there’s plenty of push. It’s a good one to get the week started, especially for the beginners. The swell’s not too big at all.

Tuesday afternoon the wind picks up a bit, but it’s still offshore. The swell builds to 6ft, still SW, still a long 17-second period. The energy jumps to 1915. This is excellent for experienced surfers, but that 6ft is getting into the zone where beginners might find it a bit much.

Wednesday the 9th is where things get serious. Morning sees an 12ft swell from the SW with a 19-second period. The combined energy is a massive 15412. That’s a lot of water moving. The wind is cross-off from the SW, so it’s clean, but for the experienced crew only. This is expert territory. It stays big through the afternoon, still 12ft, but the breeze is a bit stronger.

Thursday the 10th keeps the size up, 12ft in the morning, dropping to 10ft in the afternoon. Wind stays cross-off, waves are clean, but again, only for the experts. The energy is still very strong, 5787 in the morning.

Friday the 11th, the swell drops back to a more manageable 7ft to 7ft. The wind is light and cross-off, and the conditions are described as excellent for experienced surfers. The period is still a long 14 to 15 seconds, so the waves will have shape.

Now, Saturday the 12th of September is a real highlight. The morning is absolutely glassy, with zero wind. The swell is a clean 7ft from the SW with a 15-second period. This is the best on offer for the first week. The energy is 1780, so it’s got some grunt, but it’s manageable. The afternoon is glassy too, with a slight SSE breeze. This is the one to circle.

Sunday the 13th sees the wind swing to the NNW and get a bit stronger. The swell drops to 5ft, then 4ft. It’s still clean, but the energy is way down. The quality starts to fade into the early part of the next week.

Monday the 14th is small, with a 3ft to 2ft swell. The wind is offshore, but it’s a bit of a fresh breeze. The energy is low, below 400. Not much to write home about.

Tuesday the 15th brings a bit of a pick-up, with a 7ft swell in the morning and a 6ft in the afternoon. The wind is cross-off, so it’s clean, and the energy is back up to 1413. It’s a solid option for the experienced crew.

Wednesday the 16th and Thursday the 17th are a mixed bag. The swell holds around 5ft to 6ft, but the wind is cross-shore or cross-onshore, creating some ripples. Not ideal. Thursday afternoon does glass off, with a 5ft swell and a 14-second period, which is a nice chance for a late session.

Now, here’s the real standout of the whole outlook. Sunday the 20th of September through to Monday the 21st of September. Sunday afternoon sees an 12ft swell from the SW, with a 16-second period, and a moderate offshore wind. The energy is 5201. It’s excellent for experts. Monday the 21st is even better. Morning is an 12ft swell from the SW with a 17-second period, a light offshore wind, and a combined energy of 6062. The afternoon is still 10ft with a 16-second period and a gentle cross-off breeze. This is the big one. The second weekend is the target.

The final week tails off a bit. Tuesday the 22nd has a 8ft swell but the wind is cross-shore, creating a chop. Not the best. Wednesday the 23rd is a nicer end to the run, with a 5ft to 4ft swell and a clean offshore wind.

So, to wrap it up: Saturday the 12th of September is your best bet for the first week, with glassy conditions and a solid 7ft SW swell. But the real prize is Sunday the 20th and Monday the 21st of September, with big, clean, powerful swell from the SW. That’s the one to plan for.

Rusty.

Short Range Forecast

Some drizzle, heaviest during Tue night. Very mild (max 13°C on Tue morning, min 9°C on Thu night). Winds decreasing (fresh winds from the SW on Tue night, calm by Thu night).

Days 4-6 Weather Summary

Mostly dry. Warm (max 22°C on Sun morning, min 10°C on Fri night). Wind will be generally light.

Tuesday
8
Wednesday
9
Thursday
10
Friday
11
Saturday
12
Sunday
13
Monday
14
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
4
4
7
5
6
4
4
4
4
4
4
4
4
4
2
1
2
2
0
3
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.2
SW
18
1.8
SW
17
3
SW
16
3.5
SW
19
3.5
SW
18
4
SSW
17
3.5
SSW
16
3
SW
16
2.3
SW
15
2
SSW
14
2.2
SW
15
2.4
SW
16
2
SW
15
1.8
SW
15
1.6
SW
16
1.4
SW
16
1.1
SW
15
1
SW
15
0.9
SW
14
0.7
SW
14
2
SW
10
Wave Graph
Metric surfscale
Energy kJ
881
1915
4678
8737
8053
9083
5702
4073
2246
1667
2263
2761
1761
1381
1398
954
565
418
276
192
820
Wind (km/h)
10
W
25
W
35
SW
30
SW
25
SW
20
SSW
20
SW
20
SW
5
W
5
SW
10
SSW
5
N
0
WSW
5
SSE
10
NNW
25
NNW
20
NNW
15
NW
20
WNW
30
WSW
20
SW
Wind State
off
off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
off
cross-off
cross-off
glassy
glassy
glassy
cross-off
cross-off
cross-off
cross-off
off
off
cross-off
High Tide
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
2:03PM2.25m
2:04AM2.12m
2:41PM2.36m
2:34AM2.10m
Low Tide
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
7:45AM0.36m
8:10PM0.52m
8:17AM0.23m
8:47PM0.54m
clear
part cloud
rain showers
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
clear
part cloud
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:37
6:37
6:35
6:33
6:31
6:30
6:28
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:07
6:08
6:09
6:10
6:12
6:13
6:13
 mm
1
Temp °C
13
12
11
11
11
11
12
11
10
13
12
11
16
15
15
22
21
19
17
14
11
Feels °C
8
7
5
3
4
5
7
6
8
9
9
9
14
13
14
18
17
16
12
8
5
  • 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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