
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 14,602 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 0.5m 3s period and expected on Tuesday (Jul 28) 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, let’s talk about the surf window here at Marengo. This is a reef and point setup, a pretty forgiving wave for the beginners out there, exposed to a fair bit of swell. The water is sitting at 58°F, which is about average for this time of year, so nothing to fret about.
We’ve got a bit of a wait for the good stuff. The first few days are a bit of a tease. Tuesday the 28th is a write-off with that strong NNW cross-off wind and a messy 5ft SW swell. The energy is weak (1264), so don’t bother. Wednesday the 29th though, that’s where it kicks off. We’re looking at a solid 16ft SW groundswell in the morning, and a 15ft in the afternoon. The period is a long 16 seconds, so this is proper groundswell rolling in. The combined energy is massive (18706), but the wind is a strong cross-off from the SW and WSW, so it’s going to be clean but powerful. This is expert territory. The wave size is over 8ft, so it’s not for the faint of heart.
After that big pulse, we get a nice breather. Thursday the 30th and Friday the 31st see the swell drop to a much more manageable 4ft to 5ft from the SSW and SW. The wind goes offshore and light, giving us clean, glassy conditions. The energy drops right down to the 500-1000 range, but the quality is there. This is a great window for the beginners and intermediates to get some clean, fun waves.
The real standout of the whole period, the one that’s going to be a mission, is Saturday the 1st of August. The morning is a bit mixed with a cross-shore, but the afternoon. Oh, the afternoon. A 7ft SW groundswell with a very long period of 18 seconds, combined with a light NNW cross-off breeze. The energy is strong (3367) and the conditions are going to be excellent for experienced surfers. That long period will make it line up perfectly on the point, but it’s a serious paddle. With crowds listed as “sometimes,” you can expect a few others in the water for this one.
Moving into the second week, things get more complicated. Sunday the 2nd offers some clean 6ft SW swell, but it’s not the standout. The next Monday the 3rd has a massive 15ft WSW swell, but it’s wind-affected by a cross-on breeze. The rest of the week from the 4th through the 6th is poor with onshore winds and small, weak swell. There’s a slight uptick on the 7th with a 6ft SW swell, but the wind is cross or cross-on, so it’s marginal. The 8th and 9th are mostly messy with a lot of cross-chop.
The very end of the window, around the 12th of August, shows a 7ft SW swell with a 19-second period, but the wind is a cross-shore, making it choppy. It’s promising but less certain this far out.
So, the best bet is hands down the Saturday afternoon session on the 1st of August for the experienced crew, and the Thursday and Friday before that for a clean, fun session for everyone else.
Rusty.
Short Range ForecastHeavy rain (total 25mm), heaviest during Tue night. Very mild (max 13°C on Tue morning, min 7°C on Tue night). Winds decreasing (strong winds from the W on Tue night, light winds from the W by Thu night). | Days 4-6 Weather SummarySome drizzle, heaviest during Sun night. Very mild (max 14°C on Sat morning, min 9°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 28 | Wednesday 29 | Thursday 30 | Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | |||||||||||||||
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) | SW 16 | SW 15 | SW 14 | SW 16 | SW 15 | SW 14 | SSW 10 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 17 | SW 18 | SW 17 | SW 16 | SW 16 | WSW 14 | WSW 14 | SSW 14 | SSW 12 |
Wave Graph | |||||||||||||||||||||
906 | 1547 | 2822 | 12049 | 7795 | 5612 | 386 | 423 | 494 | 428 | 421 | 379 | 1172 | 2475 | 2330 | 1482 | 1410 | 3702 | 8530 | 1127 | 688 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | off | cross-off | cross-off | cross-off | off | off | off | off | cross-off | cross | cross | cross-off | cross-off | cross-off | cross-off | cross-on | cross-on | cross | cross-on |
High Tide | 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 | 3:40PM1.94m | 3:40AM2.10m | |||||||
Low Tide | 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 | 9:36AM0.48m | 9:35PM0.60m | ||||||||
7:31 | — | — | 7:31 | — | — | 7:30 | — | — | 7:28 | — | — | 7:28 | — | — | 7:26 | — | — | 7:26 | — | — | |
— | 5:31 | — | — | 5:31 | — | — | 5:32 | — | — | 5:34 | — | — | 5:35 | — | — | 5:36 | — | — | 5:37 | — | |
mm | — | 9 | 11 | 1 | 1 | 2 | — | — | 1 | — | — | — | — | — | — | — | — | 1 | — | — | — |
Temp °C | 13 | 10 | 9 | 11 | 11 | 11 | 12 | 12 | 10 | 12 | 12 | 11 | 14 | 14 | 10 | 14 | 12 | 10 | 11 | 11 | 11 |
Feels °C | 6 | 4 | 0 | 3 | 4 | 4 | 7 | 7 | 7 | 9 | 10 | 9 | 10 | 10 | 5 | 9 | 8 | 7 | 7 | 8 | 6 |
Swell 1 Height (m) Direction Period (s) | SW 16 | SW 15 | SW 14 | SW 16 | SW 15 | SSW 11 | SSW 10 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 17 | SW 18 | SW 17 | SW 16 | SW 16 | SW 15 | SW 15 | SSW 14 | SSW 12 |
906 | 1547 | 2822 | 6657 | 4681 | 889 | 386 | 423 | 494 | 428 | 421 | 379 | 1172 | 2475 | 2330 | 1482 | 1410 | 924 | 2278 | 1127 | 688 | |
Swell 2 Height (m) Direction Period (s) | WSW 12 | NE 5 | — | — | — | SW 14 | SW 13 | S 9 | S 9 | S 8 | SW 20 | SW 18 | S 17 | SW 13 | SSE 17 | SSE 17 | ESE 16 | WSW 18 | — | WSW 14 | WSW 13 |
164 | 6 | — | — | — | 1220 | 352 | 176 | 74 | 21 | 134 | 164 | 6 | 892 | 28 | 27 | 25 | 209 | — | 607 | 219 | |
Swell 3 Height (m) Direction Period (s) | WSW 12 | — | — | — | — | — | WSW 13 | SSW 13 | SW 23 | SSW 21 | S 13 | S 13 | — | — | — | — | — | SE 15 | — | — | SW 18 |
187 | — | — | — | — | — | 299 | 69 | 21 | 45 | 3 | 3 | — | — | — | — | — | 9 | — | — | 109 | |
Wind waves Height (m) Direction Period (s) | N 3 | NW 3 | WNW 3 | SW 16 | SW 15 | SW 14 | — | — | — | — | — | — | — | — | — | N 4 | — | WSW 14 | WSW 14 | — | — |
7 | 4 | 4 | 12049 | 7795 | 5612 | — | — | — | — | — | — | — | — | — | 24 | — | 3702 | 8530 | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 186 | 563 | 557 | 534 | 674 | 37 | 0 | 0 | 0 | 0 | 0 | 18 | 18 | 0 | 21 | 21 | 37 | 91 | 130 | 59 | 18 |
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.










