Surf Forecasts:
Marengo surf forecast from 26 Aug 2026:
- Best quality surf: Wednesday 2 Sep, 1AM (local time) - 10ft (3.0m), 14s period, WSW swell with cross-offshore winds.
- Most powerful swell: Wednesday 2 Sep, 1AM (local time) - 10ft (3.0m), 14s period, WSW swell with 3,772 kJ wave energy.
- Next surfable swell (1★+): Wednesday 26 Aug, 7PM (local time) - 3.5ft (1.0m), 11s period with SSW 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 (Aug 26) at 7PM. The primary swell is predicted to be 1.0m and 11s period with a secondary swell of 0.8m and 13s. 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 3.0m 14s and forecast to arrive on Wednesday (Sep 02) at 1AM. Winds are predicted to be cross-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 7PM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7PM (Wed 26th Aug) | 3.5ft (1.0m) 11s |
| Best Surf | 1AM (Wed 2nd Sep) | 10ft (3.0m) 14s |
| Most Powerful | 1AM (Wed 2nd Sep) | 10ft (3.0m) 14s |
Table - best surf conditions forecast for Marengo over the next 16 days.
The Lowdown
Alright, folks, Rusty here. Let's have a look at what's coming down the line at Marengo. We've got a slow build, a real sweet spot, and then a serious ramp-up into some heavy-duty stuff.
The start of the run is a little quiet. Wednesday the 26th and Thursday the 27th are showing small waves from 2 to 5 feet, with a cross-off wind keeping the surface clean. It's okay for a log or a foil, but nothing to write home about. The energy is moderate, and it's not really going to get your heart racing.
Then we get our first real standout. Friday morning the 28th of August is solid: a 6 foot SW groundswell with a very long 18-second period, and a light offshore breeze. The combined energy is strong, and that long period means better-shaped, peeling waves. This is for experienced crew only. The water temp is about 57°, which is normal for the season, so bring a decent suit.
Saturday the 29th afternoon is another top session, with a 6 foot swell from the SW, a 14-second period, and a clean offshore wind. The energy is very strong. This is the best of the first week.
Now, mark your calendar for Monday the 31st of August. This is the absolute gem. We’ve got a 7 foot SW groundswell, a 15-second period, and dead flat, glassy conditions. The energy is pumping (2118). This is as good as it gets for an expert surfer. Just be aware, crowds are possible, so be on it early.
As we head into the first week of September, things get big. Swell builds through the 4th and 5th, getting up over 6 feet with fresh offshore winds. But the real heavy stuff hits over the weekend of the 6th and 7th of September. We're looking at an 18 foot swell from the WSW on Sunday the 6th, with a very strong energy reading. This is exceptional surf, but it's for experts only. The wind is strong offshore, making it clean but extremely hard to paddle into. This is chargers' territory, and honestly, the kite crew are going to be having the time of their lives.
We get a bit of a breather on the 8th with a clean 7 foot SW groundswell at a very long 18-second period. Then another pulse of big swell hits on Thursday the 10th of September: a 15 foot SW groundswell, but with better offshore winds again. This is serious stuff.
So, the absolute must-hit session is the glassy Monday the 31st of August. The other top call is the clean, consistent pulse on Friday the 28th. Everything after the 4th of September is for the big-wave specialists only.
Stay safe out there.
- Rusty
Short Range ForecastMostly dry. Very mild (max 14°C on Thu morning, min 8°C on Wed night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Very mild (max 17°C on Mon afternoon, min 9°C on Sat night). Winds increasing (calm on Mon morning, fresh winds from the NW by Mon night). | ||||||||||||||||||||
Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | SSW 12 | SW 13 | SSW 12 | SSW 11 | SW 21 | WSW 19 | SW 18 | SW 16 | SW 16 | SW 14 | SW 14 | SSW 14 | SSW 13 | SW 13 | SW 16 | SW 15 | SW 15 | SW 16 | SW 16 | SW 15 | WSW 14 |
Wave Graph  | |||||||||||||||||||||
 kJ | 357 | 623 | 246 | 158 | 125 | 465 | 1798 | 1335 | 989 | 746 | 1344 | 515 | 961 | 1144 | 1909 | 1741 | 1542 | 1664 | 1155 | 715 | 3772 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | cross-off | off | cross-off | off | off | off | cross-off | cross-off | glassy | glassy | cross-off | cross-off | off | cross-off |
High Tide | 10:52AM1.33m | 00:32AM1.91m | 12:05PM1.48m | 1:03AM2.01m | 12:54PM1.66m | 1:30AM2.07m | 1:34PM1.85m | 1:54AM2.10m | 2:10PM2.02m | 2:18AM2.10m | 2:45PM2.16m | 2:42AM2.08m | 3:20PM2.25m | 3:05AM2.04m | |||||||
Low Tide | 5:21PM0.71m | 7:04AM1.03m | 6:16PM0.66m | 7:25AM0.89m | 7:00PM0.61m | 7:46AM0.73m | 7:39PM0.57m | 8:08AM0.57m | 8:14PM0.56m | 8:31AM0.41m | 8:49PM0.57m | 8:57AM0.27m | 9:22PM0.62m | ||||||||
 | |  |  | |  | | | | | | | | | | | | | |  |  | |
 | 6:58 | — | — | 6:56 | — | — | 6:54 | — | — | 6:52 | — | — | 6:52 | — | — | 6:50 | — | — | 6:48 | — | — |
 | — | 5:57 | — | — | 5:58 | — | — | 5:59 | — | — | 5:59 | — | — | 6:00 | — | — | 6:00 | — | — | 6:01 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 6 |
Temp °C | 13 | 12 | 9 | 14 | 14 | 10 | 12 | 12 | 9 | 12 | 12 | 9 | 14 | 13 | 10 | 16 | 17 | 14 | 21 | 19 | 10 |
Feels °C | 9 | 8 | 7 | 12 | 11 | 8 | 9 | 9 | 6 | 8 | 8 | 6 | 11 | 10 | 8 | 14 | 16 | 12 | 15 | 14 | 8 |
Swell 1 Height (m) Direction Period (s) | SSW 12 | SW 13 | SSW 12 | SSW 11 | SSW 11 | SW 14 | SW 18 | SW 16 | SW 16 | SW 14 | SW 14 | SSW 14 | SSW 13 | SW 13 | SW 16 | SW 15 | SW 15 | SW 16 | SW 16 | SW 15 | SW 15 |
| kJ | 336 | 623 | 246 | 158 | 117 | 373 | 1798 | 1335 | 989 | 746 | 650 | 515 | 961 | 1144 | 1909 | 1741 | 1542 | 1664 | 1155 | 715 | 1108 |
Swell 2 Height (m) Direction Period (s) | WSW 14 | — | WSW 13 | WSW 12 | WSW 14 | WSW 19 | SE 11 | SE 10 | — | — | SW 23 | SW 13 | SW 20 | SW 20 | S 16 | SW 20 | SW 19 | — | — | — | SW 18 |
| kJ | 357 | — | 219 | 79 | 125 | 465 | 5 | 4 | — | — | 21 | 175 | 136 | 62 | 21 | 373 | 347 | — | — | — | 166 |
Swell 3 Height (m) Direction Period (s) | SW 18 | — | SW 16 | SW 15 | SW 21 | SSW 10 | — | — | — | — | E 9 | SW 21 | S 15 | — | — | S 15 | — | — | — | — | — |
| kJ | 12 | — | 90 | 75 | 113 | 33 | — | — | — | — | 2 | 72 | 18 | — | — | 4 | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | W 4 | — | — | — | — | — | SW 14 | — | — | — | — | — | — | — | NNW 3 | NW 3 | WSW 14 |
| kJ | — | — | — | — | 16 | — | — | — | — | — | 1344 | — | — | — | — | — | — | — | 4 | 2 | 3772 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 37 | 130 | 0 | 0 | 0 | 20 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 59 | 0 | 0 | 0 | 21 | 570 | 0 | 0 |
Best forecast wave conditions in Cape Otway | |||||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||||
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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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