
Surf Forecasts:
Marengo surf forecast from 1 Aug 2026:
- Best quality surf: Monday 3 Aug, 7PM (local time) - 10ft (3.0m), 14s period, WSW swell with offshore winds.
- Most powerful swell: Monday 3 Aug, 7PM (local time) - 10ft (3.0m), 14s period, WSW swell with 3,403 kJ wave energy.
- Next surfable swell (1★+): Monday 3 Aug, 10AM (local time) - 4.5ft (1.3m), 14s 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 (Aug 03) at 10AM. The primary swell is predicted to be 1.3m and 14s period with a secondary swell of 0.6m and 16s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Marengo in the next 16 days are 3.0m 14s and forecast to arrive on Monday (Aug 03) 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 0.7m 4s period and expected on Monday (Aug 03) at 1AM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10AM (Mon 3rd Aug) | 4.5ft (1.3m) 14s |
| Best Surf | 7PM (Mon 3rd Aug) | 10ft (3.0m) 14s |
| Most Powerful | 7PM (Mon 3rd Aug) | 10ft (3.0m) 14s |
Table - best surf conditions forecast for Marengo over the next 16 days.
The Lowdown
G'day, Rusty here. Gotta be straight with you – looks like we’re in for a bit of a slow start, but there’s a monster of a swell waiting for us down the track. This forecast is all about Marengo, a reef and point setup that's fairly consistent and fairly exposed, with an optimum swell from the SSW. The water temp is about average for this time of year, so no surprises there.
The first few days are a bit of a write-off. Sunday the 2nd has a solid 6ft SW swell with a long 16-second period, but that cross-shore wind from the north at 12 mph is going to put a chop on it, and the surf is marginal. Not worth paddling out for. Monday the 3rd morning is a bit cleaner with proper offshore wind from the west at 16 mph, and 4ft SW swell, but it’s small. The afternoon picks up though – 7ft from the west with a shorter 10-second period, and clean offshore wind. That’s a solid wave for experienced surfers, with moderate wave energy (1671). Tuesday the 4th brings bigger swell, 8ft SW at 12 seconds, but the wind is a fresh cross-offshore at 19 mph, making it a bit of a battle. The combined energy is strong (2956), but the conditions are marginal.
We get a bit of a lull from Wednesday the 5th through to Saturday the 8th, with small waves around 2ft to 4ft. Clean, gentle offshore winds, but just not enough size to get excited about. Sunday the 9th is a total bust with poor surf conditions and cross-shore wind.
Now, the real action starts to build. Monday the 10th has a clean 5ft SW swell with a long 18-second period, and the wind is cross-offshore. That’s a nice, clean line, but the comment says marginal. Tuesday the 11th is a write-off again with fresh breeze. Wednesday the 12th is messy with onshore wind.
Now for the standout. Thursday the 13th morning is clean, but it’s the morning of Friday the 14th that is the one to circle. We’ve got a 8ft SW groundswell with a very long 18-second period, clean with a gentle breeze, and the combined energy is a massive 4113 – that’s strong to very strong. This is an excellent wave for experienced surfers only. Because it’s such a long period, it’s going to be a freight train on the reef, so it’s best left to the crew who know what they’re doing. The afternoon stays clean with 8ft and offshore wind.
Saturday the 15th afternoon is the absolute peak. We’re looking at an exceptional 15ft SW swell with a 16-second period, gentle offshore wind, and the combined energy is an insane 12445. This is expert-only territory. The reef is going to be absolutely pumping, but it’s dangerous. If you’re not on your game, stay on the beach. Sunday the 16th still has clean 8ft and 7ft swell, and Monday the 17th morning goes glassy with a 4ft SSW swell, a perfect way to wind down.
So, the plan is simple: sit tight through the first week, then be ready for Friday the 14th and Saturday the 15th. That’s where the magic is. It’s a long-range call, so it’s promising but not locked in. Keep an eye on it.
Rusty.
Short Range ForecastModerate rain (total 18mm), heaviest on Sun night. Very mild (max 15°C on Sun afternoon, min 9°C on Sat night). Mainly fresh winds. | Days 5-7 Weather SummarySome drizzle, heaviest during Tue night. Very mild (max 12°C on Tue night, min 9°C on Thu night). Wind will be generally light. | ||||||||||||||||||
Sunday 2 | Monday 3 | Tuesday 4 | Wednesday 5 | Thursday 6 | Friday 7 | ||||||||||||||
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 16 | SW 16 | SW 15 | SW 14 | W 10 | WSW 13 | SW 12 | SW 11 | SW 11 | SW 19 | SW 14 | SW 17 | SW 16 | SW 16 | SW 18 | SW 16 | SW 15 | SW 16 |
Wave Graph | |||||||||||||||||||
2220 | 1591 | 1281 | 1048 | 659 | 826 | 2717 | 1902 | 1389 | 1234 | 299 | 297 | 418 | 302 | 295 | 388 | 628 | 642 | 976 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-off | cross-off | off | off | off | cross-off | cross-off | cross-off | off | off | cross-off | cross-off | cross-off | glassy | cross-off | cross-on | cross-on |
High Tide | 2:52AM2.22m | 3:01PM1.86m | 3:16AM2.17m | 3:40PM1.94m | 3:40AM2.10m | 4:19PM2.00m | 4:03AM2.02m | 5:00PM2.02m | 4:27AM1.93m | 5:46PM2.00m | 4:53AM1.85m | 6:41PM1.95m | |||||||
Low Tide | 9:11AM0.61m | 8:59PM0.53m | 9:36AM0.48m | 9:35PM0.60m | 10:01AM0.36m | 10:10PM0.69m | 10:29AM0.25m | 10:47PM0.82m | 11:00AM0.18m | 11:25PM0.97m | 11:37AM0.15m | 00:09AM1.14m | |||||||
— | 7:26 | — | — | 7:26 | — | — | 7:24 | — | — | 7:24 | — | — | 7:22 | — | — | 7:22 | — | — | |
— | — | 5:36 | — | — | 5:37 | — | — | 5:37 | — | — | 5:37 | — | — | 5:38 | — | — | 5:39 | — | |
mm | — | — | — | 4 | 3 | 5 | 2 | 3 | 1 | 1 | — | — | — | — | — | — | — | — | — |
Temp °C | 10 | 14 | 15 | 12 | 11 | 11 | 11 | 12 | 12 | 12 | 12 | 12 | 11 | 12 | 12 | 10 | 12 | 12 | 10 |
Feels °C | 6 | 9 | 10 | 6 | 5 | 5 | 6 | 6 | 7 | 8 | 9 | 8 | 9 | 9 | 8 | 8 | 10 | 11 | 8 |
Swell 1 Height (m) Direction Period (s) | SW 16 | SW 16 | SW 16 | SW 15 | SW 14 | SW 15 | WSW 13 | SW 12 | SSW 9 | SW 12 | S 6 | SW 14 | SW 17 | SW 16 | SW 16 | SW 18 | SW 16 | SW 15 | SW 16 |
2220 | 1591 | 1281 | 1048 | 659 | 623 | 351 | 895 | 398 | 338 | 52 | 297 | 418 | 302 | 295 | 388 | 628 | 623 | 976 | |
Swell 2 Height (m) Direction Period (s) | SSE 16 | SSE 16 | SE 16 | WSW 20 | WSW 16 | SSW 13 | SSW 13 | SW 16 | SW 15 | S 6 | SW 14 | S 8 | S 9 | S 8 | S 8 | SW 15 | SW 19 | SW 18 | ESE 8 |
27 | 26 | 10 | 149 | 177 | 222 | 149 | 159 | 229 | 41 | 293 | 82 | 55 | 32 | 21 | 273 | 602 | 642 | 6 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | NE 4 | — | — | SSW 6 | — | WSW 12 | SW 21 | SW 19 | SW 18 | WSW 12 | SW 12 | SW 20 | SSE 8 | S 8 | ESE 8 | — |
— | — | — | 7 | — | — | 22 | — | 91 | 150 | 299 | 210 | 98 | 6 | 98 | 11 | 10 | 7 | — | |
Wind waves Height (m) Direction Period (s) | — | N 4 | NNE 4 | NNW 4 | NW 3 | W 10 | WSW 13 | SW 12 | SW 11 | SW 11 | — | — | — | — | — | — | — | — | — |
— | 14 | 10 | 13 | 2 | 826 | 2717 | 1902 | 1389 | 1234 | — | — | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 20 | 20 | 20 | 35 | 0 | 0 | 0 | 59 | 59 | 35 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 101 | 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.











