Surf Forecasts:
Marengo surf forecast from 25 Jul 2026:
- Best quality surf: Sunday 26 Jul, 1AM (local time) - 10ft (3.0m), 12s period, SW swell with offshore winds.
- Most powerful swell: Wednesday 29 Jul, 4PM (local time) - 13ft (4.0m), 15s period, SW swell with 7,361 kJ wave energy.
- Next surfable swell (1★+): Sunday 26 Jul, 1AM (local time) - 10ft (3.0m), 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 Sunday (Jul 26) at 1AM. The primary swell is predicted to be 3.0m and 12s period with a secondary swell of 1.8m and 12s. Another secondary swell of 0.2m and 17s is also forecast. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Marengo in the next 16 days are 4.0m 15s and forecast to arrive on Wednesday (Jul 29) at 4PM. 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 3s period and expected on Monday (Jul 27) at 1PM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1AM (Sun 26th Jul) | 10ft (3.0m) 12s |
| Best Surf | 1AM (Sun 26th Jul) | 10ft (3.0m) 12s |
| Most Powerful | 4PM (Wed 29th Jul) | 13ft (4.0m) 15s |
Table - best surf conditions forecast for Marengo over the next 16 days.
The Lowdown
Alright, this is Rusty, and I’m looking at the Marengo zone for the next 16 days. Let’s get into it.
At first glance, we’ve got a big pulse of energy rolling in, but this isn’t a week for beginners. The water temp is sitting pretty close to average for this time of year, about 58°, which is what you’d expect.
The standout action kicks off on Saturday afternoon, July 25th. Marengo is going to be pumping with a solid 12 ft SW swell, and the wind is blowing clean offshore from the west at 16 mph. This is prime, powerful surf with a combined energy reading of 5292 – that’s a lot of ocean moving, and it’s only for experienced surfers. The period is 12 seconds, which gives it some real push. Crowds are possible here, so get in early.
The next real highlight is Saturday afternoon, August 1st. We’re looking at a 6 ft SW swell, but the period jumps to a very long 17 seconds, and the wind is light offshore from the WNW at 6 mph. This is groundswell quality, clean and lined up. The combined energy is 1882, which is solid. This is a day for a point or reef setup, and Marengo is exactly that. It’s going to be a session to remember.
For the rest of the window, there’s a lot of onshore wind and drop in consistency. The first week has some smaller, cleaner days but nothing that stands out like those two. After August 1st, we get into a run of poor surf with onshore winds through the second week. The swell on Saturday, August 8th jumps up to 12 ft again, but it’s coming from the WSW with onshore winds, so it’ll be a messy, blown-out affair. Not one for the paddle crew, but a kite surfer might have a field day.
There’s a gap of several days in the second week where the recommendations are poor or zero. The long-range outlook on Wednesday, August 5th shows some promise with a 6 ft, 19-second period swell and light winds, but it’s a cross-off wind, not pure offshore. Still, it’s worth watching.
So, my two best bets: July 25th for the big, clean, expert-level swell, and August 1st for the long-period groundswell with glassy conditions. Don’t sleep on those.
Rusty.
Short Range ForecastLight rain (total 3mm), mostly falling on Sat night. Very mild (max 16°C on Mon morning, min 10°C on Sun night). Mainly fresh winds. | Days 5-7 Weather SummaryModerate rain (total 19mm), heaviest on Tue afternoon. Very mild (max 12°C on Fri morning, min 6°C on Tue night). Winds decreasing (strong winds from the W on Tue afternoon, light winds from the WSW by Thu night). | |||||||||||||||||||
Sat 25 | Sunday 26 | Monday 27 | Tuesday 28 | Wednesday 29 | Thursday 30 | Friday 31 | ||||||||||||||
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) | SW 12 | SW 12 | SSW 11 | SSW 11 | SW 11 | SW 11 | SW 13 | SW 14 | SW 14 | SW 15 | SW 15 | SW 16 | SW 15 | SW 14 | SW 14 | SW 12 | SSW 12 | SSW 12 | SW 11 | SSW 12 |
Wave Graph  | ||||||||||||||||||||
 kJ | 3904 | 2212 | 543 | 375 | 334 | 288 | 529 | 746 | 621 | 1308 | 1760 | 2404 | 7361 | 3139 | 363 | 465 | 513 | 480 | 380 | 417 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | off | off | cross-off | cross-off | cross-off | cross-off | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | cross-off | cross-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 | 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 | ||||||||
 |  | | |  |  | |  |  |  | |  | |  |  | | | | | | |
 | — | — | 7:33 | — | — | 7:31 | — | — | 7:31 | — | — | 7:31 | — | — | 7:30 | — | — | 7:28 | — | — |
 | 5:29 | — | — | 5:30 | — | — | 5:30 | — | — | 5:31 | — | — | 5:31 | — | — | 5:32 | — | — | 5:34 | — |
mm | — | 2 | — | — | — | — | — | — | 1 | 8 | 5 | 3 | — | 1 | — | 2 | — | — | — | — |
Temp °C | 13 | 12 | 14 | 14 | 12 | 16 | 15 | 13 | 13 | 9 | 9 | 10 | 11 | 10 | 11 | 11 | 11 | 12 | 12 | 11 |
Feels °C | 8 | 8 | 11 | 11 | 10 | 12 | 11 | 7 | 7 | 1 | 3 | 2 | 3 | 4 | 7 | 8 | 8 | 8 | 9 | 8 |
Swell 1 Height (m) Direction Period (s) | SW 12 | SW 12 | SSW 11 | SSW 11 | SW 11 | SW 11 | SW 13 | SW 14 | SW 14 | SW 15 | SW 15 | SW 16 | SSW 9 | S 8 | S 8 | SW 12 | SSW 12 | SSW 12 | SW 11 | SSW 12 |
| kJ | 1388 | 887 | 543 | 375 | 334 | 288 | 529 | 746 | 621 | 1308 | 1760 | 2404 | 976 | 412 | 228 | 465 | 513 | 480 | 380 | 417 |
Swell 2 Height (m) Direction Period (s) | — | WSW 17 | SW 17 | WSW 16 | SW 16 | SW 15 | SW 13 | NE 4 | WSW 12 | W 16 | S 14 | — | SW 15 | SW 14 | SW 14 | S 8 | SW 23 | SW 21 | SW 20 | SW 18 |
| kJ | — | 27 | 11 | 26 | 40 | 134 | 340 | 3 | 203 | 46 | 4 | — | 1606 | 951 | 363 | 92 | 21 | 72 | 186 | 266 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | S 14 | W 16 | — | — | — | — | WSW 13 | SSW 13 | E 10 | E 9 | — | — |
| kJ | — | — | — | — | — | — | — | — | 4 | 46 | — | — | — | — | 295 | 69 | 2 | 1 | — | — |
Wind waves Height (m) Direction Period (s) | SW 12 | SW 12 | — | — | — | — | — | NNW 3 | NNW 3 | NW 3 | W 10 | SSW 9 | SW 15 | SW 14 | — | — | — | — | — | — |
| kJ | 3904 | 2212 | — | — | — | — | — | 3 | 3 | 3 | 867 | 1016 | 7361 | 3139 | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 2 | 20 | 41 | 21 | 397 | 0 | 351 | 276 | 59 | 0 | 35 | 0 | 0 | 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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