Surf Forecasts:
Marengo surf forecast from 16 Aug 2026:
- Best quality surf: Saturday 22 Aug, 4PM (local time) - 8ft (2.4m), 17s period, SW swell with offshore winds.
- Most powerful swell: Saturday 22 Aug, 1AM (local time) - 11ft (3.5m), 16s period, WSW swell with 5,218 kJ wave energy.
- Next surfable swell (1★+): Wednesday 19 Aug, 7PM (local time) - 2ft (0.6m), 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 Wednesday (Aug 19) at 7PM. The primary swell is predicted to be 0.6m and 15s period. 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 3.5m 16s and forecast to arrive on Saturday (Aug 22) at 1AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 6s period and expected on Wednesday (Aug 19) at 7PM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7PM (Wed 19th Aug) | 2ft (0.6m) 15s |
| Best Surf | 4PM (Sat 22nd Aug) | 8ft (2.4m) 17s |
| Most Powerful | 1AM (Sat 22nd Aug) | 11ft (3.5m) 16s |
Table - best surf conditions forecast for Marengo over the next 16 days.
The Lowdown
Alright, this is Rusty. Let's talk about what Marengo has cooking for us.
First thing: we gotta be patient. The first few days are a total write-off with messy, small waves. But once it gets going, this reef and point setup can really fire.
It starts off slow. Monday the 17th has a 4ft SW swell but it's cross-on and choppy from the ENE at 9 mph. Tuesday is more of the same junk. Wednesday drops to a tiny 2ft – not worth pulling on the wetsuit.
Things start looking up on Thursday the 20th. Thursday morning is still iffy with a 7ft W swell and a short period, but the afternoon flips. The wind goes offshore from the west at 16 mph, that swell jumps to 7ft with a long 13-second period, and the energy is strong. This is excellent for experienced surfers.
The absolute standout, the one you circle, is Saturday the 22nd. Saturday morning is already clean, but the afternoon delivers a solid 8ft SW swell with a very long 17-second period, combined energy at a powerful 4858, and a gentle offshore breeze. That's big, clean groundswell wrapping into the point. This is for experts only. The crowds are only "sometimes" a problem, so you might score it uncrowded.
Sunday the 23rd holds at 8ft with offshore wind, and Monday the 24th stays clean at 7ft from the SSW with light winds. That Saturday-through-Monday window is the run to chase.
After that, it drops off. Tuesday the 25th gets smaller and wind-chops it. The end of the week is tiny, though Friday afternoon the 28th goes glassy with a small 3ft swell – clean but weak.
There's one more look on Monday the 31st with a 6ft SW swell and a solid offshore wind. It's over a week away, so keep an eye on it but don't hold your breath.
Bottom line: the start is a dud, but from Saturday the 22nd through Monday the 24th, Marengo will be pumping with powerful, clean groundswell for the experienced crew.
- Rusty
Short Range ForecastLight rain (total 8mm), mostly falling on Wed morning. Very mild (max 18°C on Tue morning, min 11°C on Sun night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Very mild (max 16°C on Thu morning, min 9°C on Thu night). Wind will be generally light. | ||||||||||||||||||
Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | ||||||||||||||
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 16 | SW 15 | SW 14 | SW 16 | SW 16 | SW 15 | SW 15 | WSW 14 | W 8 | W 13 | SW 16 | SW 15 | SW 15 | WSW 16 | SW 15 | SW 17 | SW 16 |
Wave Graph  | |||||||||||||||||||
 kJ | 507 | 854 | 1027 | 868 | 412 | 496 | 287 | 178 | 191 | 140 | 465 | 1682 | 502 | 868 | 773 | 5218 | 1697 | 3353 | 2702 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | on | cross-on | cross-on | cross-on | cross-on | cross | cross-off | cross-off | cross-off | off | off | cross-off | off | cross-off | off | off | cross-off |
High Tide | 3:05AM2.24m | 3:41PM2.21m | 3:36AM2.16m | 4:22PM2.19m | 4:05AM2.05m | 5:03PM2.12m | 4:33AM1.92m | 5:46PM2.00m | 4:59AM1.78m | 6:35PM1.86m | 5:23AM1.65m | 7:37PM1.74m | |||||||
Low Tide | 9:23AM0.25m | 9:39PM0.54m | 9:56AM0.19m | 10:17PM0.66m | 10:28AM0.19m | 10:54PM0.79m | 11:01AM0.24m | 11:30PM0.95m | 11:34AM0.32m | 00:08AM1.11m | 12:11PM0.44m | 00:56AM1.26m | |||||||
 |  | |  |  | | |  |  | | | | | | | | | | | |
 | — | 7:09 | — | — | 7:07 | — | — | 7:07 | — | — | 7:05 | — | — | 7:03 | — | — | 7:03 | — | — |
 | — | — | 5:49 | — | — | 5:50 | — | — | 5:51 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — |
mm | — | — | — | — | — | — | — | 4 | 4 | — | — | — | — | — | — | — | — | — | — |
Temp °C | 11 | 14 | 13 | 12 | 18 | 18 | 14 | 13 | 14 | 12 | 16 | 12 | 11 | 12 | 13 | 11 | 14 | 13 | 12 |
Feels °C | 9 | 10 | 9 | 9 | 14 | 14 | 10 | 8 | 11 | 8 | 11 | 7 | 7 | 9 | 9 | 7 | 10 | 10 | 8 |
Swell 1 Height (m) Direction Period (s) | SW 14 | SW 16 | SW 16 | SW 15 | SW 14 | SW 16 | SW 16 | SW 15 | ENE 6 | WSW 14 | SW 17 | WSW 14 | SW 16 | SW 15 | SW 15 | SW 16 | SW 15 | SW 17 | SW 16 |
| kJ | 507 | 854 | 1027 | 868 | 412 | 496 | 287 | 178 | 29 | 140 | 188 | 123 | 502 | 868 | 773 | 1129 | 1697 | 3353 | 2702 |
Swell 2 Height (m) Direction Period (s) | SSW 12 | ESE 5 | S 11 | ESE 6 | ESE 6 | E 6 | E 5 | — | SW 15 | ENE 5 | WSW 7 | SW 7 | E 7 | WSW 19 | SW 18 | — | SW 20 | SW 18 | — |
| kJ | 145 | 20 | 58 | 49 | 36 | 30 | 16 | — | 191 | 6 | 29 | 22 | 1 | 248 | 327 | — | 141 | 1487 | — |
Swell 3 Height (m) Direction Period (s) | SE 5 | SSW 11 | — | SSW 10 | SW 18 | S 9 | — | — | — | SW 18 | WSW 13 | SW 16 | — | SW 19 | — | — | — | S 15 | — |
| kJ | 6 | 93 | — | 19 | 255 | 6 | — | — | — | 87 | 68 | 132 | — | 529 | — | — | — | 18 | — |
Wind waves Height (m) Direction Period (s) | ESE 5 | E 5 | ESE 5 | — | E 6 | E 5 | NE 3 | ENE 5 | NE 6 | — | W 8 | W 13 | — | — | — | WSW 16 | — | — | — |
| kJ | 12 | 32 | 18 | — | 49 | 34 | 6 | 22 | 69 | — | 465 | 1682 | — | — | — | 5218 | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 18 | 18 | 56 | 18 | 18 | 18 | 18 | 41 | 20 | 21 | 21 | 0 | 0 | 0 | 0 | 21 | 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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