Marengo Surf Break

Lat Long: 38.78° S 143.67° E

Marengo Surf Forecast and Surf Report

Issued: 9 pm 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: Friday 28 Aug, 10AM (local time) - 5ft (1.6m), 18s period, SW swell with cross-offshore winds.
  • Most powerful swell: Sunday 30 Aug, 4PM (local time) - 6ft (1.9m), 16s period, SW swell with 1,892 kJ wave energy.
  • Next surfable swell (1★+): Monday 24 Aug, 1PM (local time) - 4.5ft (1.4m), 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 Monday (Aug 24) at 1PM. The primary swell is predicted to be 1.4m and 14s period with a secondary swell of 0.1m and 20s. Another secondary swell of 0.3m and 4s is also forecast. 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 1.9m 16s and forecast to arrive on Sunday (Aug 30) at 4PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 5s period and expected on Wednesday (Aug 26) at 1AM.

Wave TypeTime (AEST) & Date Wave Height & Period
Next good surf (1 star+) 1PM (Mon 24th Aug)4.5ft (1.4m) 14s
Best Surf10AM (Fri 28th Aug)5ft (1.6m) 18s
Most Powerful 4PM (Sun 30th Aug)6ft (1.9m) 16s

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


The Lowdown

Alright folks, Rusty here. Let’s talk about what’s on the table for the next couple of weeks.

We’ve got some solid SW groundswell lining up, but it’s a bit of a slow burn at the start. The first real action kicks off on Monday the 24th. The swell is already pushing 5 feet from the SW, with a period of 14 seconds pumping a decent 902 units of energy. It’s not perfect with a cross-off breeze, but there’s plenty of push. Marengo (reef and point) is the spot to watch. The water temp is about average for this time of year.

Tuesday the 25th sees a slight drop in size, but the swell direction is still good. The morning’s a bit messy with an onshore wind, but the afternoon cleans up nicely with a WSW cross-off and 4 feet of swell. Not a stand-out, but rideable.

Wednesday the 26th is a bit of a write-off. The wind gets up to 12 mph from the WSW, making the large 5 foot afternoon swell look a bit average. The energy is moderate at 680 units. The waves will be there, just not clean.

Now, Thursday the 27th… this is where it gets interesting. The morning is glassy. Zero wind, 3 feet of SSW swell, and a period of 11 seconds. The energy is only 328 units, but the clean conditions will make it look way better than the numbers suggest. A sneaky little session for a log or a mid-length.

But the real highlight—the one you’ve been waiting for—is Friday the 28th. The morning delivers a beauty: 5 feet of SW swell with a period of 18 seconds. That’s a very long period groundswell, and the energy is a massive 1518 units. With a light N cross-off breeze, the waves at Marengo will be clean, powerful, and offering some great lines. This is one for the experienced crew. The water is still about average temp.

Saturday the 29th goes glassy again in the morning with 4 feet of SW swell, but the energy is down to 482 units. The afternoon is clean but small. Good for a cruise, not a highlight.

Sunday the 30th is a teaser. The morning is glassy with 4 feet of SW swell and a period of 18 seconds, pushing 1027 units of energy. The afternoon sees a jump to 6 feet, but the wind turns cross-on, making it a bit lumpy. The morning is the pick.

Monday the 31st is another standout. Offshore wind in the morning, 5 feet of SW swell, and a period of 17 seconds. The energy is 1849 units. The afternoon is bigger at 6 feet with a 15-second period and a clean offshore breeze. This is a solid day for the shortboard.

The first week of September keeps the swell going. Tuesday the 1st and Wednesday the 2nd both have 5 feet of SW swell with clean conditions. The energy is moderate to strong, around 1000-1281 units. Good, consistent surf.

Then we get a bit of a lull on Thursday the 3rd and Friday the 4th. The swell drops to 4 feet and then 3 feet. The energy is low. Not worth getting excited about.

But hang on, because Saturday the 5th is a stunner. The afternoon delivers 6 feet of SW swell, a period of 17 seconds, and a gentle offshore breeze. The energy is 2044 units. This is another big one for experienced surfers.

Sunday the 6th and Monday the 7th see the swell get big—7 feet to 8 feet from the SW. The wind is cross-off, but the energy is well over 2000 units. This is serious, powerful surf. It’s going to be a handful, with big walls of water. Not for the faint of heart.

Finally, Tuesday the 8th of September, the morning offers 7 feet of SW swell, a 15-second period, and a moderate offshore wind. The energy is 2089 units. Perfect for the experts who have been waiting for a true, clean, big swell day.

If you’re looking for the best of the best, set your alarm for Friday the 28th of August morning and Saturday the 5th of September afternoon. Those are the standouts.

Stay safe out there.

Rusty.

Short Range Forecast

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

Days 5-7 Weather Summary

Mostly dry. Very mild (max 16°C on Fri morning, min 8°C on Wed night). Wind will be generally light.

Monday
24
Tuesday
25
Wednesday
26
Thursday
27
Friday
28
Saturday
29
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
3
2
3
1
2
3
2
1
2
2
2
1
3
4
2
3
2
2
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.8
SW
15
1.5
SW
14
1.4
SW
14
1.4
SW
13
1.5
SW
13
1.2
SW
13
1.2
SSW
12
0.9
SW
14
1.4
SW
13
0.9
SSW
12
0.8
SSW
11
0.4
SW
21
0.9
SW
19
1.6
SW
18
1.5
WSW
16
1.2
SW
16
1.1
SW
14
1
SW
14
0.9
SW
13
Wave Graph
Metric surfscale
Energy kJ
1343
890
681
604
780
486
378
297
680
246
161
129
540
1501
1244
729
482
401
249
Wind (km/h)
10
N
15
NNW
5
N
10
ENE
10
E
15
WSW
20
WSW
20
WSW
20
WSW
10
WNW
5
N
5
SE
10
NNW
10
N
10
ENE
10
NNW
0
WNW
10
SSW
0
N
Wind State
cross
cross-off
cross-off
cross-on
on
cross-off
cross-off
cross-off
cross-off
cross-off
glassy
cross-on
cross-off
cross-off
cross-on
cross-off
glassy
cross-off
glassy
High Tide
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
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
part cloud
cloud
light rain
light rain
mod rain
part cloud
clear
clear
clear
clear
clear
clear
clear
cloud
part cloud
part cloud
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
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>
5:54
5:55
5:57
5:58
5:59
5:59
 mm
1
5
9
Temp °C
15
16
15
13
12
12
12
13
12
9
14
14
11
16
16
13
16
15
12
Feels °C
12
13
14
12
11
10
7
8
8
7
13
12
9
14
13
11
15
12
12
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder
How to use the Wavefinder 
submit an eyeball surf report

Quick surf report for Marengo:

join our community of surf reporters

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Marengo surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.


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.

Nearest locationNearest