
Surf Forecasts:
Marengo surf forecast from 27 Jul 2026:
- Best quality surf: Wednesday 29 Jul, 7AM (local time) - 16ft (5.0m), 16s period, SW swell with cross-offshore winds.
- Most powerful swell: Wednesday 29 Jul, 7AM (local time) - 16ft (5.0m), 16s period, SW swell with 13,329 kJ wave energy.
- Next surfable swell (1★+): Wednesday 29 Jul, 7AM (local time) - 16ft (5.0m), 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 5.0m and 16s period with a secondary swell of 3.5m 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 5.0m 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 0.8m 4s period and expected on Sunday (Aug 02) at 10AM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7AM (Wed 29th Jul) | 16ft (5.0m) 16s |
| Best Surf | 7AM (Wed 29th Jul) | 16ft (5.0m) 16s |
| Most Powerful | 7AM (Wed 29th Jul) | 16ft (5.0m) 16s |
Table - best surf conditions forecast for Marengo over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s talk about what’s shaping up at Marengo over the next couple of weeks.
Right off the bat, we’re looking at a solid run of swell, but it’s not all clean. Tuesday morning (28 July) is a bit of a write-off with a fresh cross-off breeze making things messy despite some waist to chest-high swell. The real kick-off comes Tuesday afternoon. The wind swings offshore and we get a solid 6ft SW groundswell with a very long 15-second period. The energy is pumping (1547), and it’s clean. That’s the first proper session window.
Wednesday (29 July) is the standout of the first week. We’ve got a massive 16ft to 18ft SW groundswell rolling in with a long 15-16 second period. The combined energy is huge (18238 and 16559). This is serious, powerful stuff. The wind is a cross-off, so it’ll be clean, but this is only for experienced surfers. Beginners, stay on the beach. This is big, heavy, and will have plenty of grunt. It’s the best on offer in the whole outlook.
Thursday (30 July) drops back to a much more manageable 8ft SW groundswell with a 13-second period, and the wind is offshore. It’s clean, good for experienced surfers, but not the monster the day before. Friday (31 July) is smaller again, with light breezes and clean conditions, but nothing to get too excited about.
Saturday (1 August) has a tricky morning with a cross-shore wind, but the afternoon is interesting. A 6ft SW groundswell with a very long 18-second period rolls in, and the wind is light and cross-off. The energy is building (3084). That long period will make the waves peel nicely here at this reef and point.
Sunday (2 August) and Monday (3 August) are messy with onshore and cross-shore breezes. The surf is around, but it’s not worth the paddle for the quality on offer.
Now, we hit a bit of a lull, but the second week has a couple of good days. Wednesday (5 August) is a hidden gem. The morning has a 5ft SW groundswell with a very long 18-second period, and the wind is a light cross-off. The afternoon goes glassy. That’s a window for some smooth, lined-up waves. The energy is solid (2889 and 1371). This is a top pick for the second week.
The run from Thursday (6 August) to Sunday (9 August) is mostly small or onshore, with a brief glassy spell Sunday afternoon. Then Monday (10 August) brings a bigger 8ft SW groundswell, but the wind is messy, so it’s not the cleanest.
The real wildcard is Tuesday (11 August) afternoon. The wind goes offshore, and we get a solid 13ft WSW groundswell. The energy is massive (7273). This is big, powerful, and will be a heavy wave for the crew who want it. And then Wednesday (12 August) is a 23ft WSW groundswell – the biggest of the whole forecast. The wind is a moderate cross-off, but the data says it’s simply too big for this break. That’s a day to watch from the cliff.
So, the best bets: Wednesday (29 July) for the big, clean, expert-level swell. And for the second week, Wednesday (5 August) for the glassy, long-period, clean conditions. The crowds are “sometimes” here, so you might have some company, but with that quality, it’s worth it.
Rusty.
Short Range ForecastHeavy rain (total 20mm), heaviest during Tue afternoon. Very mild (max 13°C on Mon night, min 7°C on Tue night). Winds decreasing (strong winds from the W on Tue night, light winds from the WSW by Thu afternoon). | Days 5-7 Weather SummaryLight rain (total 3mm), mostly falling on Sun morning. Very mild (max 14°C on Sat afternoon, min 8°C on Sun morning). Wind will be generally light. | ||||||||||||||||||
Tuesday 28 | Wednesday 29 | Thursday 30 | Friday 31 | Saturday 1 | Sunday 2 | ||||||||||||||
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) | SW 14 | SW 16 | SW 15 | SW 14 | SW 16 | SW 15 | SW 14 | SW 14 | SW 13 | SW 12 | SSW 12 | SW 12 | SW 12 | SW 17 | SW 18 | SW 17 | SW 16 | SW 16 | SW 15 |
Wave Graph | |||||||||||||||||||
833 | 989 | 1547 | 2439 | 12032 | 12372 | 5937 | 378 | 2415 | 444 | 488 | 414 | 435 | 499 | 2192 | 2550 | 1611 | 1096 | 1020 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-off | off | off | cross-off | cross-off | cross-off | off | off | off | off | cross-off | cross-off | cross | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 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 | 2:22PM1.76m | 2:52AM2.22m | 3:01PM1.86m | 3:16AM2.17m | ||||||
Low Tide | 6:59AM1.19m | 5:31PM0.57m | 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 | |||||||
— | 7:31 | — | — | 7:31 | — | — | 7:30 | — | — | 7:28 | — | — | 7:28 | — | — | 7:26 | — | — | |
— | — | 5:31 | — | — | 5:31 | — | — | 5:32 | — | — | 5:34 | — | — | 5:35 | — | — | 5:36 | — | |
mm | — | — | 7 | 8 | — | 2 | 1 | 1 | 1 | — | — | — | — | — | — | — | 3 | — | — |
Temp °C | 13 | 12 | 10 | 10 | 11 | 10 | 10 | 12 | 12 | 10 | 13 | 12 | 10 | 13 | 14 | 10 | 11 | 11 | 11 |
Feels °C | 7 | 5 | 3 | 0 | 1 | 4 | 4 | 7 | 7 | 7 | 10 | 10 | 8 | 9 | 10 | 5 | 4 | 4 | 6 |
Swell 1 Height (m) Direction Period (s) | SW 14 | SW 16 | SW 15 | SW 14 | SW 16 | SW 15 | SW 14 | SSW 10 | SW 12 | SW 12 | SSW 12 | SW 12 | SW 12 | SW 17 | SW 18 | SW 17 | SW 16 | SW 16 | SW 15 |
833 | 989 | 1547 | 2439 | 6206 | 4187 | 1423 | 378 | 423 | 444 | 488 | 414 | 435 | 499 | 2192 | 2550 | 1611 | 1096 | 1020 | |
Swell 2 Height (m) Direction Period (s) | S 16 | WSW 12 | NNE 4 | S 14 | — | — | SSW 10 | SW 14 | S 10 | S 9 | SSW 21 | SW 20 | SW 18 | SW 12 | SW 13 | — | ESE 16 | SE 16 | WSW 19 |
5 | 113 | 6 | 15 | — | — | 540 | 357 | 226 | 101 | 45 | 134 | 210 | 268 | 892 | — | 25 | 10 | 37 | |
Swell 3 Height (m) Direction Period (s) | — | NE 5 | NNE 5 | — | — | — | — | WSW 13 | SSW 13 | SW 23 | S 13 | S 12 | S 13 | — | — | — | — | — | — |
— | 22 | 11 | — | — | — | — | 295 | 69 | 21 | 3 | 3 | 3 | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | NNE 4 | N 3 | NW 3 | NW 3 | SW 16 | SW 15 | SW 14 | — | SW 13 | — | — | — | — | — | — | — | N 4 | NNE 4 | — |
8 | 10 | 5 | 5 | 12032 | 12372 | 5937 | — | 2415 | — | — | — | — | — | — | — | 18 | 11 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 41 | 397 | 390 | 37 | 534 | 674 | 35 | 0 | 0 | 0 | 0 | 0 | 0 | 18 | 0 | 20 | 37 | 59 | 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.










