Surf Forecasts:
Marengo surf forecast from 4 Aug 2026:
- Best quality surf: Tuesday 4 Aug, 10PM (local time) - 7.5ft (2.3m), 10s period, SW swell with cross-offshore winds.
- Most powerful swell: Tuesday 11 Aug, 10AM (local time) - 8ft (2.5m), 17s period, SW swell with 3,501 kJ wave energy.
- Next surfable swell (1★+): Tuesday 4 Aug, 10PM (local time) - 7.5ft (2.3m), 10s 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 Tuesday (Aug 04) at 10PM. The primary swell is predicted to be 2.3m and 10s period with a secondary swell of 1.4m and 10s. Another secondary swell of 0.6m and 14s is also forecast. 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 2.5m 17s and forecast to arrive on Tuesday (Aug 11) at 10AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 6s period and expected on Thursday (Aug 06) at 4PM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10PM (Tue 4th Aug) | 7.5ft (2.3m) 10s |
| Best Surf | 10PM (Tue 4th Aug) | 7.5ft (2.3m) 10s |
| Most Powerful | 10AM (Tue 11th Aug) | 8ft (2.5m) 17s |
Table - best surf conditions forecast for Marengo over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s break down the next couple of weeks, and it's a bit of a slow burner, but there are definitely some sessions to be had if you play your cards right.
We start on Tuesday the 4th with some rain and a messy cross-off breeze. The swell is pushing 11ft, but it’s all over the place with a short period. Not exactly a day to be sprinting for your board. The next day, Wednesday the 5th, is a different story. The wind swings offshore in the afternoon and the swell settles to around 6ft from the southwest. That’s when things start to clean up nicely.
Thursday the 6th is flat, barely a ripple. Not worth even looking at it. Friday the 7th has a small bump but nothing meaningful. The weekend is a write-off with onshore winds and choppy conditions.
Hold on to your boardshorts, because Monday the 10th is the first real standout. We’ve got a solid 6ft of SW groundswell with a 17-second period. The wind is offshore and light. The energy is pumping. This is a proper point-break day. The second real standout is a week and a half away, on Monday the 17th. Glassy conditions, 6ft of clean SW swell with an 18-second period. This is as good as it gets for this spot, but it's a long way off so we'll call it promising.
Between those, there's the wildcard on Wednesday the 12th. That's when a huge pulse arrives, reading 15 to 20ft. That's way too big. Only for the brave, but honestly, it's just a mess. The rest of the week after that settles into manageable 6-7ft surf with decent winds.
Water temp is about average for the season, around 58°, so you'll want your full suit.
The two days to circle are Monday the 10th and Monday the 17th. Get in the water and enjoy it.
Rusty out.
Short Range ForecastModerate rain (total 12mm), heaviest on Tue morning. Very mild (max 12°C on Tue morning, min 8°C on Wed night). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 19mm), heaviest on Sun morning. Very mild (max 16°C on Sat morning, min 9°C on Fri afternoon). Winds increasing (calm on Fri afternoon, fresh winds from the N by Sat night). | ||||||||||||||||||||
Tuesday 4 | Wednesday 5 | Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | |||||||||||||||
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) | WSW 12 | SW 11 | SW 9 | SW 14 | SW 14 | SW 17 | SW 16 | SW 16 | SW 15 | SW 16 | SW 15 | SW 17 | SW 16 | SW 16 | SW 15 | SW 14 | SW 16 | SW 19 | SW 17 | SW 17 | SW 16 |
Wave Graph  | |||||||||||||||||||||
 kJ | 3033 | 1317 | 481 | 1438 | 1471 | 418 | 248 | 362 | 327 | 894 | 640 | 1098 | 1014 | 952 | 631 | 407 | 580 | 738 | 2523 | 2380 | 2212 |
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 | cross-off | cross-off | off | off | cross-off | cross-off | cross | cross | cross | cross | cross | cross | cross-off | off | off | cross-off |
High Tide | 4:19PM2.00m | 4:03AM2.02m | 5:00PM2.02m | 4:27AM1.93m | 5:46PM2.00m | 4:53AM1.85m | 6:41PM1.95m | 5:22AM1.77m | 7:49PM1.89m | 5:59AM1.68m | 9:15PM1.87m | 6:52AM1.57m | 10:40PM1.93m | ||||||||
Low Tide | 10:01AM0.36m | 10:10PM0.69m | 10:29AM0.25m | 10:47PM0.82m | 11:00AM0.18m | 11:25PM0.97m | 11:37AM0.15m | 00:09AM1.14m | 12:20PM0.18m | 1:06AM1.29m | 1:16PM0.26m | 2:53AM1.40m | 2:32PM0.36m | ||||||||
 | |  |  |  |  | | | | | | | |  |  |  | | | | | | |
 | 7:24 | — | — | 7:24 | — | — | 7:22 | — | — | 7:22 | — | — | 7:20 | — | — | 7:20 | — | — | 7:18 | — | — |
 | — | 5:37 | — | — | 5:37 | — | — | 5:38 | — | — | 5:39 | — | — | 5:40 | — | — | 5:42 | — | — | 5:43 | — |
mm | 4 | 3 | 2 | — | — | — | 2 | 1 | — | — | — | — | — | — | 8 | 5 | 1 | 5 | — | — | 3 |
Temp °C | 12 | 12 | 11 | 12 | 12 | 10 | 10 | 12 | 10 | 12 | 12 | 11 | 16 | 15 | 12 | 11 | 11 | 12 | 12 | 14 | 12 |
Feels °C | 7 | 7 | 8 | 9 | 8 | 7 | 6 | 7 | 7 | 9 | 9 | 8 | 11 | 11 | 7 | 7 | 8 | 9 | 7 | 10 | 7 |
Swell 1 Height (m) Direction Period (s) | WSW 12 | SW 12 | SSW 10 | SSW 15 | SW 14 | SW 17 | SW 16 | SW 16 | SW 15 | SW 16 | SW 15 | SW 17 | SW 16 | SW 16 | SW 15 | SW 14 | SW 16 | SW 9 | SW 17 | SW 17 | SW 16 |
| kJ | 378 | 698 | 246 | 568 | 404 | 418 | 248 | 362 | 326 | 894 | 640 | 1098 | 1014 | 952 | 631 | 407 | 580 | 202 | 2523 | 2380 | 2212 |
Swell 2 Height (m) Direction Period (s) | SSW 12 | SW 15 | SW 14 | SW 19 | S 9 | SW 12 | SSW 8 | S 8 | SW 18 | SW 6 | SW 19 | SSW 6 | — | — | — | WSW 18 | NE 6 | SW 19 | — | — | — |
| kJ | 285 | 149 | 200 | 234 | 76 | 86 | 37 | 12 | 327 | 15 | 427 | 6 | — | — | — | 31 | 15 | 738 | — | — | — |
Swell 3 Height (m) Direction Period (s) | SW 16 | — | SW 21 | — | SW 18 | S 9 | SW 12 | WSW 20 | SW 7 | SW 20 | SSW 6 | — | — | — | — | — | — | SW 14 | — | — | — |
| kJ | 245 | — | 150 | — | 210 | 39 | 35 | 37 | 52 | 100 | 12 | — | — | — | — | — | — | 469 | — | — | — |
Wind waves Height (m) Direction Period (s) | WSW 12 | SW 11 | SW 9 | SW 14 | SW 14 | — | W 5 | W 6 | WSW 7 | — | — | — | — | — | NE 3 | NE 6 | NE 5 | WSW 9 | — | N 4 | N 3 |
| kJ | 3033 | 1317 | 481 | 1438 | 1471 | — | 33 | 66 | 319 | — | — | — | — | — | 4 | 31 | 28 | 500 | — | 13 | 7 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 37 | 59 | 0 | 2 | 0 | 0 | 20 | 0 | 0 | 0 | 0 | 18 | 20 | 20 | 41 | 20 | 18 | 35 | 0 | 0 | 21 |
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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