Marengo Surf Break

Lat Long: 38.78° S 143.67° E

Marengo Surf Forecast and Surf Report

Issued: 9 am 01 Sep 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 1 Sep 2026:

  • Best quality surf: Saturday 5 Sep, 4PM (local time) - 21ft (6.5m), 14s period, WSW swell with offshore winds.
  • Most powerful swell: Saturday 5 Sep, 4PM (local time) - 21ft (6.5m), 14s period, WSW swell with 16,320 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 2 Sep, 1AM (local time) - 8ft (2.5m), 14s period with WSW 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 Wednesday (Sep 02) at 1AM. The primary swell is predicted to be 2.5m and 14s period with a secondary swell of 1.3m and 15s. Another secondary swell of 0.4m and 18s is also forecast. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Marengo in the next 16 days are 6.5m 14s and forecast to arrive on Saturday (Sep 05) at 4PM. Winds are predicted to be 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 4AM.

Wave TypeTime (AEST) & Date Wave Height & Period
Next good surf (1 star+) 1AM (Wed 2nd Sep)8ft (2.5m) 14s
Best Surf 4PM (Sat 5th Sep)21ft (6.5m) 14s
Most Powerful 4PM (Sat 5th Sep)21ft (6.5m) 14s

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


The Lowdown

Alright folks, Rusty here with a look at what’s coming up for the Marengo stretch. The next couple of weeks are going to be a wild ride, with pulses of serious size testing the reef and point. This isn't a beginners' playground for most of the run, but for the experienced crew, there will be some barnstorming sessions.

The combined energy in the water is going to be pumping hard, hitting a reading of 40122 on the 9th of September. That’s a massive amount of power. Water temp is sitting at 57° with an anomaly of 1°, so it's feeling about average for this time of year.

We kick off with a modest start on the 1st. Tuesday morning has a 5ft SW swell, but a 16 mph cross-off wind from the NNW keeps things a bit bumpy and messy.

The first real standout arrives on the morning of Wednesday the 2nd. A 6ft swell from the SW is building, but the key detail is the offshore wind from the WNW at 12 mph. That offshore flow will groom the faces nicely. This is a solid size for a point and reef, and it's going to be lined up and clean.

Thursday the 3rd is for the brave and the good. The swell jumps to 13ft in the morning, then ramps up to a solid 18ft from the WSW by afternoon, with a combined energy reading of 15367. The wind is a strong offshore breeze, which is great for the wave face, but this is big, powerful groundswell. Periods of 14 seconds mean there's a lot of water moving. This is experts-only territory; if you're not dialled in, sit on the beach and watch.

After that peak, Friday the 4th and Saturday the 5th still hold plenty of energy. Saturday morning sees 10ft with a gale-force offshore wind of 25 mph. The sea will be clean and the faces will look like glass, but paddling out will be a battle. The afternoon of the 5th gets ridiculous: 21ft from the WSW. That’s too big for paddle surfing here – honestly, the setup looks more interesting for kite surfing than a standard paddle session.

The week starting the 7th settles down. Monday the 7th morning is glassy and clean with a 3ft SW groundswell. By Tuesday the 8th, the morning session offers a 4ft, very long-period SW swell of 18 seconds. That long period will wrap well around the reef and point, giving those beautiful, walling lines.

Another monster pulse hits on the 9th of September. Wednesday morning is massive with a 21ft SW swell and combined energy of 40122. Again, this is too big for a standard surf at this break; the power is just staggering. Later in the day, things settle slightly to 18ft but are still enormous.

From the 10th onward, we get a nice, sustained run of quality surf. The morning of the 10th offers 8ft from the SW with solid offshore wind. This carries through the 11th with 7ft to 7ft, again with a clean offshore flow. After that, the size drops a touch. Saturday the 12th afternoon is great with a 5ft offshores, and it stays consistent into the next week. Monday the 14th afternoon features a near-6ft swell with light offshores for a really fun finish to the run.

Best on offer: The entire stretch from the morning of the 10th through the 11th is hard to beat – waist-to-head-high SW swell, consistent offshore winds, and the long-period quality will have the point reeling. Also, Wednesday the 2nd morning is the call for a clean, building swell that still has some paddle power.

Stay safe, keep an eye on those tide swings, and I'll see you in the lineup.
Rusty

Short Range Forecast

Light rain (total 7mm), mostly falling on Tue afternoon. Warm (max 20°C on Tue morning, min 10°C on Tue night). Mainly fresh winds.

Days 4-6 Weather Summary

Moderate rain (total 11mm), heaviest on Fri afternoon. Very mild (max 15°C on Fri night, min 10°C on Sat night). Winds decreasing (strong winds from the W on Sat morning, calm by Sun morning).

Tuesday
1
Wednesday
2
Thursday
3
Friday
4
Saturday
5
Sunday
6
Monday
7
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
2
4
4
4
2
4
8
3
4
3
2
2
!
4
4
2
2
2
0
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.6
SW
16
1.3
SW
15
2.5
WSW
14
1.8
SW
16
2
SW
15
2.1
SW
15
4
SW
14
5.5
WSW
14
3
SW
15
3
SW
16
2.5
SW
16
2.4
SW
16
3
SW
14
6.5
WSW
14
2.5
SW
14
2.1
SW
14
1.8
SW
14
1.1
SW
13
0.9
SW
13
0.8
SW
13
0.9
SW
14
Wave Graph
Metric surfscale
Energy kJ
1140
686
2991
1739
1776
1881
5139
11948
3848
4218
3499
2723
3216
16320
2671
1736
1238
400
245
208
264
Wind (km/h)
25
NNW
25
NW
20
W
20
WNW
20
WNW
25
NW
35
W
30
W
20
NW
20
NW
25
NNW
25
NW
40
WNW
40
W
15
W
10
NW
10
SSE
5
NNW
5
SW
10
NE
0
SE
Wind State
cross-off
cross-off
off
off
off
cross-off
off
off
cross-off
cross-off
cross-off
cross-off
off
off
off
cross-off
cross
cross-off
glassy
cross-on
glassy
High Tide
3:20PM2.25m
3:05AM2.04m
3:56PM2.28m
3:30AM1.99m
4:34PM2.25m
3:56AM1.93m
5:16PM2.15m
4:24AM1.85m
6:06PM2.01m
4:57AM1.76m
7:10PM1.86m
5:37AM1.63m
8:43PM1.77m
Low Tide
9:22PM0.62m
9:24AM0.14m
9:55PM0.70m
9:54AM0.07m
10:28PM0.82m
10:27AM0.05m
11:03PM0.95m
11:05AM0.10m
11:43PM1.09m
11:49AM0.22m
00:37AM1.23m
12:46PM0.40m
2:34AM1.31m
part cloud
rain showers
rain showers
clear
part cloud
rain showers
part cloud
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part cloud
rain showers
rain showers
rain showers
rain showers
part cloud
clear
clear
part cloud
cloud
light rain
light rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:48
6:47
6:46
6:43
6:43
6:41
6:39
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:01
6:02
6:04
6:05
6:06
6:06
6:07
 mm
4
1
2
3
6
1
1
1
2
Temp °C
20
19
14
14
14
13
12
13
12
14
14
15
13
13
12
15
14
11
17
17
13
Feels °C
15
14
10
9
9
7
4
6
7
9
9
9
5
5
7
13
11
9
15
15
13
  • 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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