Surf Forecasts:
Marengo surf forecast from 11 Jul 2026:
- Best quality surf: Monday 13 Jul, 10AM (local time) - 21ft (6.5m), 15s period, WSW swell with cross-offshore winds.
- Most powerful swell: Monday 13 Jul, 7PM (local time) - 23ft (7.0m), 15s period, WSW swell with 21,600 kJ wave energy.
- Next surfable swell (1★+): Monday 13 Jul, 10AM (local time) - 21ft (6.5m), 15s period with WSW 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 (Jul 13) at 10AM. The primary swell is predicted to be 6.5m and 15s period with a secondary swell of 3.0m 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 7.0m 15s and forecast to arrive on Monday (Jul 13) at 7PM. Winds are predicted to be 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 (Jul 12) at 10AM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10AM (Mon 13th Jul) | 21ft (6.5m) 15s |
| Best Surf | 10AM (Mon 13th Jul) | 21ft (6.5m) 15s |
| Most Powerful | 7PM (Mon 13th Jul) | 23ft (7.0m) 15s |
Table - best surf conditions forecast for Marengo over the next 16 days.
Alright, Rusty here again with the imperial take.
We’ve got a solid run of surf coming up at Marengo, a reef and point setup that loves a south-southwest swell. The week ahead is looking serious, but you’ve got to pick your moments.
The water temp is sitting at 59°F, which is pretty normal for this time of year, nothing wild.
The first real action kicks off Saturday afternoon, July 11th, but it’s small with a 2ft swell from the SW and a 30 km/h cross-off wind. It’s clean but the energy is weak (257). Not worth getting wet for.
Now, Sunday morning, July 12th, things start to cook. The swell jumps to 7ft from the WSW, period 12 seconds, and the wind is offshore. The energy is moderate (1173). It’s a bit of a wake-up call, but the real standout is Sunday afternoon, July 12th. We’re looking at a 20ft swell from the WSW, 13-second period, and a strong offshore wind. The energy is massive (12589). This is expert territory only – way too big for anyone but the experienced crew. The waves will be clean but a beast to get into.
The best on offer? Monday morning, July 13th. The swell peaks at 21ft from the WSW, with a very long 15-second period, and a cross-off wind. The energy is off the charts (22899). This is a true standout for experts. It’s oversized, powerful, and the point break at Marengo will handle it, but the long period means it’ll be a bit straight on the face, so the reef and point here will be the place to be. Beginners, stay on the beach.
Monday afternoon drops to 12ft but stays clean with offshore wind. Tuesday morning, July 14th, is also a big one at 18ft, but the wind is offshore and clean. The energy is very strong (18279). Again, experts only.
The rest of the first week stays solid but drops off. Wednesday morning, July 15th, has a 8ft swell with gentle offshore wind - clean and manageable for stronger intermediates. Thursday and Friday see smaller, cleaner conditions with a 5ft to 7ft swell, light winds, and glassy periods. Friday afternoon, July 17th, is glassy with a 6ft swell from the SW and a 15-second period – that’s a beautiful, clean wave for the more experienced.
The second week, from July 18th onward, is smaller and less consistent. Saturday morning, July 18th, has a 4ft swell with a 14-second period, clean but weak. The energy is low (488). Sunday, July 19th, is a write-off with messy, cross-shore winds and a 3ft to 4ft swell. There’s a gap of a few days of marginal conditions.
The pattern picks up again around Wednesday, July 23rd into Friday, July 24th. Thursday morning, July 23rd, has a 5ft swell from the SW with a 15-second period and moderate offshore wind – clean and promising. The real standout in the second week is Friday morning, July 24th, with a 7ft swell from the SW, a very long 17-second period, and light cross-off wind. The energy is strong (2390). This is the best of the second week, but it’s a week and a half out, so keep an eye on it.
Saturday, July 25th, and Sunday, July 26th, finish the run with glassy conditions and 4ft to 5ft swell, clean and fun for a wide range of surfers.
Crowds can be an issue at Marengo sometimes, so factor that in for the bigger days.
Rusty.
Short Range ForecastHeavy rain (total 43mm), heaviest during Sat afternoon. Very mild (max 13°C on Mon morning, min 8°C on Sat night). Mainly strong winds. | Days 5-7 Weather SummarySome drizzle, heaviest during Wed afternoon. Very mild (max 15°C on Thu afternoon, min 10°C on Tue night). Wind will be generally light. | ||||||||||||||||||||
Sat 11 | Sunday 12 | Monday 13 | Tuesday 14 | Wednesday 15 | Thursday 16 | Friday 17 | |||||||||||||||
PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | |
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||
Wave Height (m) Direction Period (s) | SW 14 | WSW 12 | WSW 12 | WSW 13 | WSW 13 | WSW 15 | SW 16 | SW 15 | SW 15 | SW 16 | SW 15 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 17 | SW 16 | SW 15 | SW 14 | SW 14 |
Wave Graph  | |||||||||||||||||||||
 kJ | 211 | 403 | 1173 | 10813 | 12090 | 18270 | 5273 | 20206 | 13426 | 3604 | 2686 | 2144 | 1438 | 1094 | 1079 | 998 | 2494 | 2354 | 1572 | 911 | 485 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | off | off | off | cross-off | off | off | off | off | off | off | off | cross-off | cross-off | off | cross-off | cross-off | glassy | cross-off | cross-off |
High Tide | 9:50PM1.97m | 7:35AM1.57m | 10:59PM2.08m | 9:00AM1.52m | 11:59PM2.20m | 10:38AM1.55m | 00:50AM2.30m | 11:59AM1.64m | 1:35AM2.38m | 1:06PM1.76m | 2:16AM2.42m | 2:07PM1.87m | 2:55AM2.40m | ||||||||
Low Tide | 3:47AM1.37m | 3:04PM0.25m | 5:18AM1.33m | 4:20PM0.24m | 6:21AM1.22m | 5:30PM0.21m | 7:10AM1.07m | 6:31PM0.20m | 7:54AM0.89m | 7:26PM0.21m | 8:35AM0.71m | 8:17PM0.26m | 9:14AM0.54m | ||||||||
 |  |  | | |  | | | | |  | | | | |  | | | |  | | |
 | — | — | 7:41 | — | — | 7:41 | — | — | 7:41 | — | — | 7:39 | — | — | 7:39 | — | — | 7:39 | — | — | 7:39 |
 | 5:19 | — | — | 5:19 | — | — | 5:20 | — | — | 5:21 | — | — | 5:21 | — | — | 5:22 | — | — | 5:22 | — | 5:23 |
mm | 12 | 5 | 4 | 2 | 14 | — | 4 | 2 | — | — | — | — | 1 | — | — | — | — | — | — | — | — |
Temp °C | 12 | 11 | 12 | 12 | 12 | 13 | 13 | 12 | 13 | 12 | 11 | 14 | 13 | 13 | 14 | 15 | 12 | 14 | 13 | 11 | 14 |
Feels °C | 6 | 3 | 4 | 4 | 6 | 6 | 6 | 6 | 7 | 6 | 7 | 11 | 10 | 11 | 12 | 13 | 10 | 13 | 12 | 8 | 11 |
Swell 1 Height (m) Direction Period (s) | SW 14 | WSW 12 | WSW 12 | SW 13 | SW 14 | SW 16 | SW 16 | SW 15 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 17 | SW 16 | SW 15 | SW 14 | SW 14 |
| kJ | 211 | 403 | 1173 | 1756 | 2536 | 4629 | 5273 | 6215 | 4853 | 3604 | 2686 | 2144 | 1438 | 1094 | 1079 | 998 | 2494 | 2354 | 1572 | 911 | 485 |
Swell 2 Height (m) Direction Period (s) | NE 5 | ENE 5 | — | SW 23 | — | — | — | — | — | — | — | S 14 | — | SSW 13 | SW 22 | S 9 | S 17 | S 17 | S 16 | — | S 13 |
| kJ | 12 | 2 | — | 20 | — | — | — | — | — | — | — | 16 | — | 31 | 18 | 44 | 23 | 23 | 5 | — | 3 |
Swell 3 Height (m) Direction Period (s) | SW 13 | E 12 | — | — | — | — | — | — | — | — | — | — | — | — | — | SW 20 | — | — | — | — | — |
| kJ | 43 | 3 | — | — | — | — | — | — | — | — | — | — | — | — | — | 61 | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | N 3 | NW 3 | WNW 4 | WSW 13 | WSW 13 | WSW 15 | WNW 4 | SW 15 | SW 15 | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 3 | 2 | 17 | 10813 | 12090 | 18270 | 19 | 20206 | 13426 | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 214 | 289 | 570 | 897 | 37 | 600 | 534 | 557 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 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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