
Surf Forecasts:
Marengo surf forecast from 28 Jul 2026:
- Best quality surf: Wednesday 29 Jul, 7AM (local time) - 18ft (5.5m), 16s period, SW swell with cross-offshore winds.
- Most powerful swell: Wednesday 29 Jul, 7AM (local time) - 18ft (5.5m), 16s period, SW swell with 14,572 kJ wave energy.
- Next surfable swell (1★+): Wednesday 29 Jul, 7AM (local time) - 18ft (5.5m), 16s 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 Wednesday (Jul 29) at 7AM. The primary swell is predicted to be 5.5m and 16s period with a secondary swell of 4.0m and 16s. 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 5.5m 16s and forecast to arrive on Wednesday (Jul 29) at 7AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 5s period and expected on Monday (Aug 03) at 4PM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7AM (Wed 29th Jul) | 18ft (5.5m) 16s |
| Best Surf | 7AM (Wed 29th Jul) | 18ft (5.5m) 16s |
| Most Powerful | 7AM (Wed 29th Jul) | 18ft (5.5m) 16s |
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 cooking at Marengo over the next couple of weeks.
Straight up, this is a classic case of big energy but you’ve got to pick your moments. The first few days are pumping with a serious swell, but it comes with a lot of wind, so we’re not looking at perfect conditions straight away. We’ve got a solid run of swell coming through, but the real gems are tucked away in the middle of the week and then again further out.
We kick off on Wednesday, 29 July, and it’s all about size. We’re looking at a 16 ft SW swell with a 16-second period, carrying a massive combined energy of 18611. That’s a lot of power. But the wind is a cross-off SW breeze at 22 mph, so it’s going to be a bit of a battle. The surf is clean, but the conditions are marginal. It’s a big, powerful ocean out there, and for the experienced crew only – this is way over the 8 ft mark. It’s a reef and point set-up, so that long period should wrap in nicely, but the wind is the main factor here.
By Thursday, 30 July, things settle down a notch. The swell drops to 3 ft from the SW on Thursday morning, with a 14-second period, and the combined energy is down to 964. But the wind has swung to a W 9 mph offshore breeze. That’s the ticket. The report says "expect very good surf conditions" and it’s clean with a gentle offshore. This is a solid window for a longer board, but it’s small. The afternoon kicks up a bit to 8 ft from the SW, with a solid 13-second period, and the wind stays offshore from the WSW. That’s "excellent surf conditions for experienced surfers" – a standout for the week. The combined energy jumps to 3019, so there’s proper push. If you’re an experienced surfer, Thursday afternoon is your session.
Friday, 31 July, is smaller again, with 4 ft and 4 ft from the SSW and SW, and light cross-off winds. It’s clean, but not a standout.
Saturday, 1 August, has a mixed bag. The morning is tiny at 3 ft, but the afternoon brings a 6 ft SW swell with a 17-second period, a long period groundswell, and the wind is a clean cross-off from the NNW. The combined energy is 3092, and it’s described as "excellent surf conditions for experienced surfers". That’s another top pick, but it’s a bit of a step up in size.
Sunday, 2 August, holds the same 6 ft SW swell, but the wind picks up to a fresh 19 mph cross-off from the NNW. It’s still clean, but the wind is stronger, so it’s not as clean as the day before.
We’ve got a bit of a lull in the quality from Monday, 3 August, through to Wednesday, 5 August. The swell drops, the wind is onshore or cross-off, and the conditions are generally marginal. There’s a window on Monday morning with a fresh offshore from the W at 22 mph, but the swell is only 4 ft. It’s clean, but the energy is dropping.
The next true standout is on Friday, 7 August. The afternoon session is looking juicy. A 4 ft SW swell with a 19-second period – that’s a very long period groundswell. Combined energy is 1502, and the wind is a light cross-off from the NW. It’s described as "excellent surf conditions for experienced surfers". This is a late-week highlight, but it’s over a week away, so keep an eye on it.
After that, from Saturday, 8 August, the wind turns messy onshore and cross-on, and the quality drops off. There are a few clean windows further out, like on Tuesday, 11 August, with a 4 ft SW swell and a moderate offshore, but the swell is small.
The last big bump we see is on Wednesday, 12 August, with an 12 ft SW swell packing a combined energy of 7469, but the wind is a fresh cross-shore at 22 mph, creating a lumpy cross-chop. That’s only for the brave and the experts.
So, overall, the best on offer is Thursday afternoon, 30 July, and then Saturday afternoon, 1 August. Friday, 7 August, is a promising long-range option, but it’s a week and a half out. The water temperature is about what you’d expect for this time of year at Marengo, nothing unusual.
Stay stoked.
Rusty.
Short Range ForecastModerate rain (total 10mm), heaviest on Tue night. Very mild (max 12°C on Fri morning, min 8°C on Tue night). Winds decreasing (strong winds from the W on Tue night, calm by Fri afternoon). | Days 5-7 Weather SummaryModerate rain (total 16mm), heaviest on Mon afternoon. Very mild (max 14°C on Sat morning, min 9°C on Sat night). Winds increasing (calm on Fri night, strong winds from the WSW by Mon morning). | ||||||||||||||||||
Wednesday 29 | Thursday 30 | Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | ||||||||||||||
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) | WSW 13 | SW 16 | SW 15 | SW 14 | SW 14 | SW 13 | SW 12 | SSW 12 | SW 12 | SW 12 | SW 17 | SW 17 | SW 16 | SW 16 | SW 16 | SW 15 | SW 14 | WSW 14 | WSW 13 |
Wave Graph | |||||||||||||||||||
10242 | 12184 | 7331 | 1255 | 357 | 2382 | 627 | 488 | 435 | 386 | 487 | 1753 | 1925 | 1771 | 1571 | 936 | 726 | 733 | 3521 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross-off | cross-off | cross-off | off | off | off | cross-off | cross-off | cross-off | cross | cross-off | cross-off | cross-off | cross-off | off | off | cross-off | cross-off |
High Tide | 00:56AM2.05m | 12:02PM1.42m | 1:30AM2.14m | 12:56PM1.53m | 2:00AM2.20m | 1:41PM1.64m | 2:27AM2.23m | 2:22PM1.76m | 2:52AM2.22m | 3:01PM1.86m | 3:16AM2.17m | 3:40PM1.94m | 3:40AM2.10m | ||||||
Low Tide | 7:32AM1.10m | 6:22PM0.53m | 7:59AM0.99m | 7:06PM0.50m | 8:24AM0.87m | 7:46PM0.49m | 8:48AM0.74m | 8:23PM0.50m | 9:11AM0.61m | 8:59PM0.53m | 9:36AM0.48m | 9:35PM0.60m | |||||||
— | 7:31 | — | — | 7:30 | — | — | 7:28 | — | — | 7:28 | — | — | 7:26 | — | — | 7:26 | — | — | |
— | — | 5:31 | — | — | 5:32 | — | — | 5:34 | — | — | 5:35 | — | — | 5:36 | — | — | 5:37 | — | |
mm | 9 | 1 | — | — | — | — | — | — | — | — | — | — | — | 1 | 2 | 6 | 2 | 5 | 5 |
Temp °C | 10 | 11 | 11 | 11 | 11 | 11 | 10 | 12 | 11 | 11 | 14 | 14 | 10 | 11 | 9 | 10 | 10 | 11 | 11 |
Feels °C | 1 | 3 | 4 | 5 | 6 | 7 | 7 | 9 | 9 | 9 | 10 | 10 | 6 | 3 | 3 | 3 | 1 | 3 | 3 |
Swell 1 Height (m) Direction Period (s) | SW 14 | SW 16 | SW 15 | SSW 11 | SSW 9 | SW 12 | SW 12 | SSW 12 | SW 12 | SW 12 | SW 17 | SW 17 | SW 16 | SW 16 | SW 16 | SW 15 | SW 14 | WSW 14 | WSW 13 |
2570 | 6427 | 4187 | 685 | 308 | 423 | 627 | 488 | 435 | 386 | 487 | 1753 | 1925 | 1771 | 1571 | 936 | 726 | 733 | 444 | |
Swell 2 Height (m) Direction Period (s) | S 14 | — | — | SW 14 | SW 14 | S 9 | SW 23 | SSW 21 | SW 20 | SW 18 | SW 12 | SW 17 | — | — | SSE 16 | S 15 | WSW 16 | SW 14 | SW 13 |
14 | — | — | 1255 | 357 | 169 | 21 | 45 | 134 | 162 | 232 | 1339 | — | — | 26 | 5 | 104 | 293 | 326 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | WSW 13 | SW 13 | S 14 | — | S 13 | S 12 | — | — | — | — | — | — | WSW 16 | — | SW 18 |
— | — | — | — | 299 | 45 | 4 | — | 3 | 3 | — | — | — | — | — | — | 512 | — | 152 | |
Wind waves Height (m) Direction Period (s) | WSW 13 | SW 16 | SW 15 | — | — | SW 13 | — | — | — | — | — | — | — | NNE 4 | NNE 4 | N 3 | NNW 3 | SW 5 | WSW 13 |
10242 | 12184 | 7331 | — | — | 2382 | — | — | — | — | — | — | — | 15 | 16 | 4 | 4 | 24 | 3521 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 537 | 351 | 182 | 35 | 0 | 0 | 0 | 0 | 0 | 0 | 18 | 0 | 20 | 41 | 35 | 2 | 248 | 276 | 351 |
Best forecast wave conditions in Cape Otway | |||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||
Header Global | |||||||||||||||||||
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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.










