Marengo Surf Break

Lat Long: 38.78° S 143.67° E

Marengo Surf Forecast and Surf Report

Issued: 3 am 25 Jul 2026 (local time)

Forecast update in  hr  min

Today's Marengo sea temperature is
14.5° C
0.9° 

Marengo surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Marengo surf forecast from 25 Jul 2026:

  • Best quality surf: Wednesday 29 Jul, 4AM (local time) - 20ft (6.0m), 15s period, SW swell with cross-offshore winds.
  • Most powerful swell: Wednesday 29 Jul, 4AM (local time) - 20ft (6.0m), 15s period, SW swell with 16,913 kJ wave energy.
  • Next surfable swell (1★+): Saturday 25 Jul, 4PM (local time) - 11ft (3.5m), 12s 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 Saturday (Jul 25) at 4PM. The primary swell is predicted to be 3.5m and 12s period with a secondary swell of 2.2m and 12s. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Marengo in the next 16 days are 6.0m 15s and forecast to arrive on Wednesday (Jul 29) at 4AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 4s period and expected on Monday (Jul 27) at 10PM.

Wave TypeTime (AEST) & Date Wave Height & Period
Next good surf (1 star+) 4PM (Sat 25th Jul)11ft (3.5m) 12s
Best Surf 4AM (Wed 29th Jul)20ft (6.0m) 15s
Most Powerful 4AM (Wed 29th Jul)20ft (6.0m) 15s

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


The Lowdown

Alright mate, Rusty here. Let’s have a look at what’s shaping up for the next couple of weeks at Marengo.

Looks like the surf window kicks off proper this Saturday morning, and it’s going to be a ripper of a start. We’ve got a solid 13ft SW groundswell, with a period of 12 seconds, and a fresh offshore wind from the WSW at 19 mph. That’s clean and punchy. The combined energy is strong at 7245. This is a serious swell – over 8ft, so it’s only for the experienced crew. The water temp is sitting at 58°F, which is pretty normal for this time of year. Saturday afternoon stays excellent with 12ft SW swell, still offshore, still clean for the experts.

Sunday morning sees the swell easing a touch to 8ft SW, but still with clean offshore winds. That’s still big for beginners – over 5ft – but for the competent surfer, those 11-second groundswell lines will be offering proper shape at this reef and point set-up. By Sunday afternoon it drops to 4ft, still glassy with light offshore wind, and that’s a lovely clean end to the weekend for anyone looking for a mellower session.

Monday and Tuesday look pretty average. Swell drops right off, winds go cross or cross-off, and the energy is weak to moderate. Not worth paddling out for. Wednesday 29 July kicks back up with a 10ft SW swell and a very long 15-second period. That’s a proper groundswell, with combined energy at 4079. The wind is cross-off, so it’ll be clean, but that long period might make it a bit straight for the beach – but this is a reef and point, so it’ll handle it nicely. Still, it’s a big swell, so experts only. Thursday and Friday look much smaller, but clean.

Now, the standout. Mark your calendars for Saturday 1 August. That morning we see a 10ft SW swell with an 18-second period – that’s a deep, powerful groundswell. The energy is very strong at 5845. By the afternoon it bumps to 12ft SW, 18 seconds, and the energy hits 6914. The wind is light and cross-off, so the surface will be clean. This is an exceptional window for expert surfers at Marengo. The swell direction lines up perfectly with the optimum from the SSW, and the long period means it’ll groove beautifully over the reef and point. Crowds can be a thing here sometimes, so get in early.

Sunday 2 August keeps the party going with 10ft SW and SSW swells, still clean, still strong energy (5107 and 4796). That’s another excellent day for the experienced.

After that, the swell fades fast through Monday and Tuesday of the following week. Wednesday 5 August to Friday 7 August is small and messy – under 3ft of weak energy, with cross and onshore winds. Not worth it. But then… hold onto your board. Saturday 8 August looks like the absolute monster of the run. We’ve got 13ft SW swell in the morning with glassy conditions – that’s an 8777 combined energy. By the afternoon it’s 18ft SW, 12 seconds, and the energy is a massive 12955. That’s very strong. The wind is light, clean. This is a huge, powerful swell. It is only for elite, expert surfers. If you’re not one, stay on the sand. After that, the swell completely drops out again on Sunday 9 August.

So, to wrap it up: the first week has some solid, clean, expert-level groundswell, with the peak coming Saturday 1 August. The second week has a colossal, glassy day on Saturday 8 August that will be the one to talk about, if you’ve got the skills. For the average punter, Sunday 30 July afternoon and Tuesday 4 August look like your small, clean windows.

Get amongst it.

Rusty.

Short Range Forecast

Light rain (total 2mm), mostly falling on Sat night. Very mild (max 16°C on Mon morning, min 11°C on Sat night). Winds increasing (light winds from the WNW on Sun afternoon, fresh winds from the N by Mon night).

Days 4-6 Weather Summary

Moderate rain (total 13mm), heaviest on Tue afternoon. Very mild (max 12°C on Wed morning, min 8°C on Tue afternoon). Winds decreasing (fresh winds from the W on Tue afternoon, light winds from the W by Thu night).

Saturday
25
Sunday
26
Monday
27
Tuesday
28
Wednesday
29
Thursday
30
Friday
31
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
5
5
4
4
2
2
1
0
1
1
2
7
4
3
4
3
2
2
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)
4
SW
12
3.5
SW
12
3
SW
12
2.5
SW
11
1.3
SSW
11
1.1
SW
11
1.1
SW
11
1
SW
13
1.1
SW
14
1
SW
14
1.3
SW
15
5.5
SW
15
3
SW
15
2.4
SW
14
1.9
SW
14
1.5
SW
12
1.2
SSW
13
1.2
SW
13
1.6
SW
13
1.8
SW
14
1.7
SW
13
Wave Graph
Metric surfscale
Energy kJ
5346
3904
2212
1456
382
297
263
335
514
373
677
12923
4079
2383
1338
657
437
471
778
1321
1027
Wind (km/h)
30
WSW
25
W
20
W
20
W
15
W
10
NNW
20
NNW
20
N
30
NW
30
W
35
W
30
SSW
20
SW
20
WSW
15
WSW
15
W
20
W
10
W
10
NW
10
W
10
NNW
Wind State
off
off
off
off
off
cross-off
cross-off
cross
cross-off
off
off
cross-off
cross-off
cross-off
cross-off
off
off
off
cross-off
off
cross-off
High Tide
10:02PM1.80m
7:34AM1.41m
11:14PM1.86m
9:13AM1.34m
00:12AM1.95m
10:53AM1.35m
00:56AM2.05m
12:02PM1.42m
1:30AM2.14m
12:56PM1.53m
2:00AM2.20m
1:41PM1.64m
2:27AM2.23m
Low Tide
2:07PM0.50m
4:25AM1.33m
3:17PM0.56m
6:03AM1.28m
4:30PM0.58m
6:59AM1.19m
5:31PM0.57m
7:32AM1.10m
6:22PM0.53m
7:59AM0.99m
7:06PM0.50m
8:24AM0.87m
7:46PM0.49m
part cloud
part cloud
rain showers
part cloud
clear
part cloud
part cloud
clear
rain showers
rain showers
mod rain
rain showers
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:33
7:33
7:31
7:31
7:31
7:30
7:28
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:29
5:30
5:30
5:31
5:31
5:32
5:34
 mm
1
1
3
7
3
Temp °C
13
13
12
14
14
12
16
15
14
11
8
11
12
12
10
11
12
11
14
14
10
Feels °C
7
8
8
11
11
8
11
10
8
5
0
4
6
7
5
7
8
8
11
11
7
  • 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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