
Surf Forecasts:
Marengo surf forecast from 27 Jul 2026:
- Best quality surf: Thursday 30 Jul, 4AM (local time) - 5ft (1.6m), 14s period, SW swell with offshore winds.
- Most powerful swell: Wednesday 29 Jul, 7AM (local time) - 16ft (5.0m), 16s period, SW swell with 11,862 kJ wave energy.
- Next surfable swell (1★+): Monday 27 Jul, 1PM (local time) - 3.5ft (1.1m), 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 Monday (Jul 27) at 1PM. The primary swell is predicted to be 1.1m and 12s period with a secondary swell of 0.4m and 15s. 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 Monday (Aug 03) at 4PM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1PM (Mon 27th Jul) | 3.5ft (1.1m) 12s |
| Best Surf | 4AM (Thu 30th Jul) | 5ft (1.6m) 14s |
| 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, Rusty here. Let’s have a look at what’s cooking.
We’ve got a bit of a slow start, but the first real chance to get wet is Monday morning, July 27th, at Marengo. It’s a reef and point setup, fairly exposed to the swell, and it's a beginner-friendly spot. The water is sitting at 58°, which is about average for this time of year, so nothing crazy there. The morning session is a bit marginal, with a 4ft swell from the SW, period at 11 seconds, and a cross-off wind from the NNW at 9 mph. It’s clean, but the energy is moderate (415). Not a standout, but it’s a start.
The real story starts to build on Monday afternoon. The swell picks up a touch to 4ft, and the period stretches out to 13 seconds from the SW. The energy jumps to a moderate 718, and the wind stays clean. It’s a solid session, but the main event is still a day away.
Now, Tuesday, July 28th, is where things get serious. The morning is clean but the wind is a fresh 19 mph from the NW, making it a bit of a wrestle. The swell is 5ft from the SW, period 16 seconds, and the energy is strong at 1017. That’s a long-period groundswell, and at a point and reef break, it’s going to line up beautifully. But the real firecracker is Tuesday afternoon. The wind swings offshore from the WNW at 22 mph, the swell pushes to 6ft, and the energy jumps to a very strong 1547. The period is 15 seconds. This is the best window of the first week. The conditions are clean with a fresh offshore breeze. For a beginner-friendly spot, 6ft is on the edge of being too big, but for anyone with a bit of experience, this is a ripper.
Wednesday, July 29th, is for the brave. The swell hammers in at 15ft from the SW. Morning sees a strong breeze at 25 mph from the SW, cross-off, and the energy is a massive 15660. That’s a very strong, powerful swell. The period is 16 seconds. This is a full-on, expert-only day. The afternoon eases slightly with a 19 mph wind, still clean, but the swell holds at 15ft. This is not a day to be learning. It’s a spectacle.
After that, the swell drops back. Thursday, July 30th, has a clean morning with offshore wind from the WSW at 12 mph, and a 5ft swell from the SW (period 13 seconds, energy 1013). It’s a good, manageable day after the chaos. Friday, July 31st, is smaller but still clean, with a 4ft swell and light offshore winds in the morning. Saturday, August 1st, is the smallest of the run, with a 3ft swell from the SW, but the period is a very long 17 seconds. The energy is moderate (701), but the wind is light and cross-shore. It’ll be a bit of a slow, lully day, but the waves will have shape.
Looking into the second week, the standout is Monday, August 3rd. The morning is a big one: 13ft from the WSW, period 14 seconds, and a strong 7612 energy. The wind is offshore from the W at 16 mph. This is for experts only. The afternoon is cleaner but smaller, at 6ft. After that, the swell settles into a more consistent 4ft to 5ft range through Tuesday and Wednesday, with clean conditions. Thursday, August 6th, gets a bit choppy with a cross-on wind, and Friday, August 7th, is a write-off with onshore winds. The weekend of August 8th and 9th is small and a bit messy, with the swell staying around 4ft to 4ft and cross-onshore winds.
The best of the best? No question, it’s Tuesday afternoon, July 28th, and Wednesday morning, July 29th. Tuesday afternoon is the sweet spot for a strong, clean, long-period swell at a manageable size (6ft). Wednesday morning is the big one, but only for the hardcore crew. If you want a more relaxed standout, the Monday morning, August 3rd session is a promising long-range call, but keep an eye on the wind.
Rusty, out.
Short Range ForecastModerate rain (total 16mm), heaviest on Tue afternoon. Very mild (max 15°C on Mon morning, min 7°C on Tue night). Winds increasing (light winds from the NNW on Mon afternoon, strong winds from the WSW by Tue night). | Days 4-6 Weather SummaryMostly dry. Very mild (max 14°C on Sat afternoon, min 8°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
Monday 27 | Tuesday 28 | Wednesday 29 | Thursday 30 | Friday 31 | Saturday 1 | Sunday 2 | |||||||||||||||
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 11 | SW 13 | SW 14 | SW 16 | SW 15 | SW 14 | SW 16 | SW 15 | SW 14 | SW 13 | SW 12 | SW 12 | SSW 12 | SW 12 | SW 12 | SW 17 | SW 17 | SW 17 | SW 16 | SW 16 | SW 15 |
Wave Graph | |||||||||||||||||||||
283 | 480 | 911 | 906 | 1547 | 2293 | 11009 | 11737 | 1238 | 694 | 430 | 637 | 480 | 414 | 442 | 505 | 1816 | 2195 | 1364 | 1109 | 879 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | off | off | cross-off | cross-off | cross-off | off | off | off | cross-off | cross-off | glassy | 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 | 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 | 8:48AM0.74m | 8:23PM0.50m | 9:11AM0.61m | 8:59PM0.53m | ||||||||
7:31 | — | — | 7:31 | — | — | 7:31 | — | — | 7:30 | — | — | 7:28 | — | — | 7:28 | — | — | 7:26 | — | — | |
— | 5:30 | — | — | 5:31 | — | — | 5:31 | — | — | 5:32 | — | — | 5:34 | — | — | 5:35 | — | — | 5:36 | — | |
mm | — | — | — | — | 6 | 8 | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | 2 | 16 |
Temp °C | 15 | 15 | 13 | 13 | 8 | 9 | 11 | 11 | 10 | 12 | 11 | 10 | 12 | 11 | 11 | 13 | 14 | 9 | 14 | 14 | 10 |
Feels °C | 12 | 12 | 7 | 6 | 0 | 1 | 2 | 4 | 4 | 6 | 6 | 7 | 10 | 9 | 9 | 10 | 11 | 5 | 7 | 8 | 3 |
Swell 1 Height (m) Direction Period (s) | SW 11 | SW 13 | SW 14 | SW 16 | SW 15 | SW 14 | SW 16 | SW 15 | S 11 | SW 13 | SW 12 | SW 12 | SSW 12 | SW 12 | SW 12 | SW 12 | SW 17 | SW 17 | SW 16 | SW 16 | SW 15 |
283 | 480 | 911 | 906 | 1547 | 2293 | 5973 | 3918 | 669 | 694 | 430 | 637 | 480 | 414 | 442 | 268 | 1816 | 2195 | 1364 | 1109 | 879 | |
Swell 2 Height (m) Direction Period (s) | SW 14 | SW 14 | S 16 | WSW 12 | — | S 14 | — | — | SW 14 | S 10 | S 9 | SW 23 | SW 21 | SW 20 | SW 18 | SW 17 | — | — | — | E 16 | WSW 19 |
132 | 238 | 5 | 161 | — | 14 | — | — | 1238 | 279 | 173 | 21 | 72 | 134 | 215 | 505 | — | — | — | 20 | 73 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | NE 5 | — | — | — | — | — | — | SSW 13 | S 14 | S 13 | S 13 | — | S 18 | — | — | — | — | NNE 4 |
— | — | — | 18 | — | — | — | — | — | — | 69 | 4 | 3 | 3 | — | 6 | — | — | — | — | 7 | |
Wind waves Height (m) Direction Period (s) | — | — | NNE 4 | N 3 | NW 3 | NW 3 | SW 16 | SW 15 | — | — | — | — | — | — | — | — | — | — | N 4 | NNE 4 | — |
— | — | 16 | 7 | 4 | 4 | 11009 | 11737 | — | — | — | — | — | — | — | — | — | — | 19 | 13 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 2 | 0 | 41 | 186 | 390 | 557 | 351 | 59 | 35 | 0 | 0 | 0 | 0 | 0 | 0 | 18 | 0 | 20 | 41 | 22 | 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.










