Marengo Surf Break

Lat Long: 38.78° S 143.67° E

Marengo Surf Forecast and Surf Report

Issued: 3 pm 09 Aug 2026 (local time)

Forecast update in  hr  min

Today's Marengo sea temperature is
14.1° 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 9 Aug 2026:

  • Best quality surf: Wednesday 12 Aug, 10PM (local time) - 13ft (4.0m), 17s period, SW swell with offshore winds.
  • Most powerful swell: Thursday 13 Aug, 1PM (local time) - 15ft (4.5m), 15s period, SW swell with 10,012 kJ wave energy.
  • Next surfable swell (1★+): Monday 10 Aug, 7AM (local time) - 5ft (1.6m), 19s 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 10) at 7AM. The primary swell is predicted to be 1.6m and 19s period with a secondary swell of 0.8m and 4s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Marengo in the next 16 days are 4.5m 15s and forecast to arrive on Thursday (Aug 13) at 1PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 6s period and expected on Monday (Aug 10) at 7PM.

Wave TypeTime (AEST) & Date Wave Height & Period
Next good surf (1 star+) 7AM (Mon 10th Aug)5ft (1.6m) 19s
Best Surf10PM (Wed 12th Aug)13ft (4.0m) 17s
Most Powerful 1PM (Thu 13th Aug)15ft (4.5m) 15s

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


The Lowdown

Alright, this is Rusty checking in on Marengo for the next couple of weeks. We’ve got some real meat on the bone coming, but you gotta be patient, and there’s a long flat spell in the middle.

Right now, it’s dead. Sunday’s got tiny 2-foot waves with a messy swell, cross-on wind, and hardly any energy. It’s poor.

Monday the 10th afternoon is where it starts. Swell jumps to 6 feet out of the southwest with a 19-second period, and moderate wave energy. Wind turns cross-offshore and light, so it’s clean, but that’s a real long-period groundswell—good for points and reefs, but at a beach break, it might be a bit too straight. Excellent for experienced surfers only. Water temp is 58°, right around average.

The big standout is Wednesday the 12th. Wednesday afternoon brings a massive 15-foot southwest swell with a 16-second period and a combined energy of (12537)—that’s a ton of power. Offshore wind holds it clean. That’s expert-only territory, and it’s the best wave of the whole forecast.

Thursday the 13th holds at 8 feet, still clean and offshore. Friday the 14th stays excellent with 10-foot southwest swell. Saturday the 15th is still going good with 7-foot swell and light cross-off winds.

Then it dies. From Sunday the 16th all the way through the next week until Monday the 24th, it’s all onshore winds and tiny, weak surf. That’s a full nine-day dry spell—don’t bother.

Your best bet, without question, is Wednesday afternoon the 12th. Huge, powerful, clean. Sunday the 14th morning is your second call. Everything after the 15th is a write-off until possibly Monday the 24th, but that’s way off.

Rusty.

Short Range Forecast

Moderate rain (total 17mm), heaviest on Sun night. Very mild (max 13°C on Sun night, min 10°C on Mon night). Winds increasing (calm on Sun night, fresh winds from the NW by Tue night).

Days 5-7 Weather Summary

Light rain (total 3mm), mostly falling on Wed afternoon. Very mild (max 14°C on Fri morning, min 11°C on Wed afternoon). Wind will be generally light.

Sun
9
Monday
10
Tuesday
11
Wednesday
12
Thursday
13
Friday
14
Saturday
15
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
3
4
2
4
2
2
1
5
8
4
4
4
4
5
4
4
4
4
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.6
SW
16
1.1
SW
20
1.7
SW
19
1.6
SW
17
1.4
SW
16
1.3
SW
14
1.3
SW
15
1.6
SW
16
3
SW
16
4.5
WSW
16
2.2
SW
16
2.5
SW
16
2.5
SW
15
2.5
SW
15
3
SW
16
2.5
SW
16
2.2
SW
15
2.1
SW
15
2
SW
15
1.8
SW
14
Wave Graph
Metric surfscale
Energy kJ
219
1030
1988
1579
989
746
757
1276
4869
9742
2384
2944
3023
2856
4941
3619
2197
1875
1695
1289
Wind (km/h)
20
NNE
5
NNE
10
SW
30
SW
25
W
20
NW
20
NNW
30
NNW
30
W
25
W
20
W
25
W
20
W
10
WNW
20
W
20
WSW
15
WSW
10
SW
10
SSW
5
ESE
Wind State
cross-on
cross-on
cross-off
cross-off
off
cross-off
cross-off
cross-off
off
off
off
off
off
cross-off
off
off
cross-off
cross-off
cross-off
cross-on
High Tide
9:15PM1.87m
6:52AM1.57m
10:40PM1.93m
8:40AM1.47m
11:47PM2.03m
10:50AM1.52m
00:38AM2.14m
12:14PM1.69m
1:20AM2.23m
1:17PM1.88m
1:57AM2.28m
2:10PM2.04m
2:32AM2.28m
Low Tide
2:53AM1.40m
2:32PM0.36m
5:03AM1.33m
4:09PM0.42m
6:12AM1.17m
5:31PM0.42m
6:58AM0.96m
6:35PM0.39m
7:37AM0.74m
7:29PM0.38m
8:14AM0.53m
8:16PM0.40m
light rain
light rain
light rain
rain showers
light rain
part cloud
part cloud
rain showers
part cloud
rain showers
part cloud
rain showers
part cloud
part cloud
part cloud
part cloud
part cloud
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rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:18
7:16
7:16
7:15
7:13
7:11
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:42
5:43
5:44
5:44
5:45
5:45
5:46
 mm
4
5
3
1
1
3
2
1
1
Temp °C
12
13
13
13
12
12
13
12
13
11
12
13
13
12
14
13
11
13
12
12
Feels °C
8
11
8
8
7
7
8
5
7
5
8
8
8
9
9
8
8
10
9
10
  • 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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