Marengo Surf Break

Lat Long: 38.78° S 143.67° E

Marengo Surf Forecast and Surf Report

Issued: 9 am 23 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 23 Aug 2026:

  • Best quality surf: Sunday 23 Aug, 4PM (local time) - 6.5ft (2.0m), 16s period, SW swell with cross-offshore winds.
  • Most powerful swell: Sunday 30 Aug, 7AM (local time) - 7.5ft (2.3m), 16s period, SW swell with 2,727 kJ wave energy.
  • Next surfable swell (1★+): Sunday 23 Aug, 4PM (local time) - 6.5ft (2.0m), 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 Sunday (Aug 23) at 4PM. The primary swell is predicted to be 2.0m 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 2.3m 16s and forecast to arrive on Sunday (Aug 30) at 7AM. Winds are predicted to be 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 Saturday (Aug 29) at 1PM.

Wave TypeTime (AEST) & Date Wave Height & Period
Next good surf (1 star+) 4PM (Sun 23rd Aug)6.5ft (2.0m) 16s
Best Surf 4PM (Sun 23rd Aug)6.5ft (2.0m) 16s
Most Powerful 7AM (Sun 30th Aug)7.5ft (2.3m) 16s

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


The Lowdown

Alright, let’s get into it. The next couple of days look pretty quiet at Marengo, a reef and point setup that loves a solid SW groundswell. The water is sitting at 57°, which is pretty normal for this time of year.

Sunday the 23rd kicks things off with a good pulse. We’re looking at a 6 ft SW swell, long period around 14 seconds, and a light NW cross-off wind. Combined energy is strong at 2097. It’s not huge, but it’s clean and well-shaped. Best for experienced surfers, and the crowds are only sometimes an issue, so you might get a few ones to yourself. Sunday afternoon holds similar – 7 ft, 16 second period, glassy cross-off. Clean lines all day.

Monday the 24th drops a little to 5 ft, still a long 14 second SW swell, with a NNW cross-off in the morning. Energy reads 900 – moderate. Decent waves, but the afternoon gets cross and a bit messy. Definitely a morning session.

Tuesday the 25th has light rain and onshore wind in the morning – not great. But Tuesday afternoon turns it around: 4 ft SSW swell, 13 seconds, with a light offshore wind. That’s clean, fun little waves. Worth a paddle.

Wednesday the 26th and Thursday the 27th are small and a bit wind-affected – waves around 2 ft to 5 ft, but the wind is either cross-off or offshore, so it stays clean. Nothing special.

Now Friday the 28th is a real standout. Morning sees 6 ft WSW swell with a long 18 second period, WNW offshore wind. Energy hits 1663. Clean, powerful, lined up. This is the kind of day that makes you forget the work week. Afternoon stays solid at 5 ft, 16 seconds, still offshore.

Saturday the 29th holds a steady 4 ft, 14 second SW swell with offshore wind. Moderate energy, clean conditions – good for a long session.

Sunday the 30th is another big standout. Morning swell jumps to 8 ft SW with a 16 second period, combined energy a massive 2718. Offshore wind from the WSW. This is proper groundswell – powerful, clean, and only for experienced surfers. The afternoon is a touch smaller at 8 ft but just as clean.

Monday the 31st stays strong: 6 ft SSW, 15 seconds, light offshore wind. Clean and fun through the day.

Into September, Tuesday the 1st sees 6 ft SW swell, 15 seconds, with offshore winds in the afternoon. A good session but the morning is a bit messy. Wednesday the 2nd and Thursday the 3rd drop off quickly – small, weak, not worth hustling for.

Friday the 4th and Saturday the 5th are marginal. Small clean waves, but nothing to write home about.

Sunday the 6th brings a glassy morning with 5 ft SW swell – nice and clean for some cruisy rides. Afternoon picks up a long 16 second period swell, very clean.

Now, Monday the 7th of September – hold onto your board. We’ve got a monster 18 ft WSW swell with a 13 second period, combined energy an insane 11516. But the wind is howling at 22 mph, cross-off. This is massive, messy, and only for the absolute best or for those who like their kites. The afternoon gets even stronger with 16 ft and 25 mph offshore wind – hard to paddle into, extreme conditions.

Overall, the real gems are Sunday the 23rd, Friday the 28th, Sunday the 30th, and Monday the 31st. Best on offer? Friday the 28th morning for that long period offshore clean combo, and Sunday the 30th for the big, powerful groundswell.

Rusty.

Short Range Forecast

Moderate rain (total 15mm), heaviest on Mon night. Very mild (max 16°C on Mon afternoon, min 10°C on Tue night). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Very mild (max 15°C on Thu morning, min 8°C on Wed night). Wind will be generally light.

Sunday
23
Monday
24
Tuesday
25
Wednesday
26
Thursday
27
Friday
28
Saturday
29
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
4
4
4
3
2
1
2
3
3
1
1
2
1
2
3
4
3
3
2
2
3
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.9
SW
14
2
SW
16
1.8
SW
15
1.5
SW
14
1.4
SW
14
1.4
SW
13
1.5
SW
13
1.3
SSW
13
1.2
SSW
12
0.9
SW
14
1.4
SW
13
0.8
WSW
13
0.7
SSW
11
0.4
SW
21
0.9
WSW
19
1.7
WSW
18
1.6
SW
16
1.4
SW
16
1.2
SW
14
1.2
SW
14
1.2
SSW
14
Wave Graph
Metric surfscale
Energy kJ
1418
1929
1343
890
681
604
780
555
378
297
632
215
121
129
643
1663
1302
1018
606
565
523
Wind (km/h)
10
NW
5
SW
15
NNW
15
NNW
5
N
5
NE
10
ENE
5
W
15
WSW
20
WSW
20
WSW
10
NW
10
NW
10
W
10
NW
15
WNW
20
W
15
WSW
20
W
25
W
15
WSW
Wind State
cross-off
cross-off
cross-off
cross-off
cross
cross-on
on
off
off
cross-off
cross-off
cross-off
cross-off
off
cross-off
off
off
off
off
off
off
High Tide
9:07PM1.67m
6:06AM1.41m
10:43PM1.71m
7:14AM1.29m
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
Low Tide
12:56PM0.56m
3:19AM1.37m
2:08PM0.69m
6:21AM1.29m
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
clear
part cloud
cloud
cloud
light rain
mod rain
mod rain
rain showers
part cloud
clear
clear
clear
clear
clear
part cloud
cloud
part cloud
part cloud
clear
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:01
7:00
6:58
6:58
6:56
6:54
6:52
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:53
5:54
5:55
5:57
5:58
5:59
5:59
 mm
1
6
7
1
Temp °C
14
14
15
15
16
14
12
12
12
13
12
9
15
15
11
14
14
12
13
13
12
Feels °C
12
12
12
13
15
12
11
11
8
8
7
6
12
12
9
11
10
10
8
8
8
  • 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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