
Surf Forecasts:
Marengo surf forecast from 27 Jul 2026:
- Best quality surf: Sunday 2 Aug, 1PM (local time) - 11ft (3.5m), 16s period, WSW swell with offshore winds.
- Most powerful swell: Wednesday 29 Jul, 1PM (local time) - 18ft (5.5m), 16s period, SW swell with 15,098 kJ wave energy.
- Next surfable swell (1★+): Thursday 30 Jul, 1AM (local time) - 5.5ft (1.7m), 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 Thursday (Jul 30) at 1AM. The primary swell is predicted to be 1.7m and 14s period with a secondary swell of 1.8m and 11s. The wind is predicted to be 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 1PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 4s period and expected on Sunday (Aug 02) at 7AM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1AM (Thu 30th Jul) | 5.5ft (1.7m) 14s |
| Best Surf | 1PM (Sun 2nd Aug) | 11ft (3.5m) 16s |
| Most Powerful | 1PM (Wed 29th Jul) | 18ft (5.5m) 16s |
Table - best surf conditions forecast for Marengo over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s talk about what’s on the cards for Marengo. We’ve got a proper mixed bag coming up over the next couple of weeks, so let’s get into it.
The swell window opens up later this week, with a solid pulse of long-period SW groundswell. The first few days are quiet, but the real action kicks off on Wednesday the 29th. That’s the standout. You’re looking at a powerful 15 ft to 16 ft swell from the SW, with a period of 15-16 seconds. That’s a lot of water moving – combined wave energy is huge (16082 and 15224), so this is serious, expert-only territory. The wind is cross-offshore, which will keep it clean, but it’s so big that only the most experienced crew should be out. This is a true big-wave day, so if you’re not comfortable in heavy water, give it a wide berth.
Leading up to that, Monday the 27th offers a small but clean 4 ft SW swell with a 13-second period. The wind is gentle and cross-off, making for very good surf conditions. It’s a nice little warm-up, though the energy is moderate (718). The water temp is sitting at 58°, which is about average for this time of year, so no surprises there.
Tuesday the 28th is a bit of a write-off. The morning has a clean 5 ft swell, but the wind is gusty and cross-off, making it hard work. The afternoon sees a bigger 6 ft swell with strong offshore wind, but it’s a tough paddle-out and the conditions are marginal.
After the big Wednesday, the swell drops quickly. Thursday the 30th has a clean 3 ft to 4 ft SW swell with moderate offshore winds. It’s small but clean, and the energy is moderate (986 and 679). Friday the 31st is similar, with light winds and 4 ft to 4 ft swell. Not exciting, but a nice, easy paddle for beginners.
Saturday the 1st of August brings a bit more interest. The morning is small and cross-shore, but the afternoon sees a 6 ft SW swell with a very long 18-second period. The wind is light and cross-off, so it’ll be clean. This is a long-period groundswell, so it’ll be better over the point and reef sections at Marengo, rather than the beach. The energy is strong (1945), and it’s one of the better options in the second half of the week for experienced surfers.
Sunday the 2nd and Monday the 3rd see a consistent 5 ft to 6 ft SW swell with moderate offshore winds, keeping things clean. The energy is strong (1364 to 1585). These are good, solid days for intermediates and up, but nothing that’ll blow your mind.
The second week gets a bit smaller and more inconsistent. Tuesday the 4th and Wednesday the 5th are small, with a 4 ft to 7 ft swell. The 4th has glassy conditions in the afternoon, which is a treat, but the swell is weak. The 5th is blown out with onshore wind. The rest of the week into the weekend is full of small, weak SW swells (2 ft to 5 ft) with very long periods (17-23 seconds) but combined energy is low (545-650). These are clean, but tiny. Not worth a special trip.
So, the standout is absolutely Wednesday the 29th of July. That’s the big one for experts. For the rest of us, the best bet is the consistent, clean swell from Sunday the 2nd through Monday the 3rd of August, with a solid 5 ft to 6 ft SW swell and clean conditions. The Saturday afternoon session on the 1st is also a good pick for experienced surfers after a long-period swell.
Stay safe out there, and remember: the big days are for the brave, the small days are for the soul.
Rusty.
Short Range ForecastModerate rain (total 17mm), heaviest on Tue night. Very mild (max 15°C on Mon afternoon, min 8°C on Tue afternoon). Winds increasing (light winds from the NNW on Mon afternoon, strong winds from the SW by Tue night). | Days 5-7 Weather SummaryLight rain (total 3mm), mostly falling on Sun morning. Very mild (max 14°C on Sat afternoon, min 8°C on Sun morning). Winds increasing (calm on Fri afternoon, fresh winds from the NNW by Sat night). | |||||||||||||||||||
Mon 27 | Tuesday 28 | Wednesday 29 | Thursday 30 | Friday 31 | Saturday 1 | Sunday 2 | ||||||||||||||
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 13 | SW 14 | SW 16 | SW 15 | SW 13 | SW 16 | SW 15 | SW 14 | SW 14 | SW 12 | SW 12 | SSW 12 | SW 12 | SW 12 | SW 17 | SW 18 | SW 17 | SW 16 | SW 16 | SW 15 |
Wave Graph | ||||||||||||||||||||
480 | 911 | 989 | 1547 | 4790 | 10362 | 11461 | 1147 | 363 | 430 | 627 | 488 | 414 | 435 | 505 | 1945 | 2169 | 1364 | 1210 | 1361 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | off | off | cross-off | cross-off | off | off | cross-off | off | off | cross-off | cross-off | cross | cross-off | cross-off | cross-off | 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 | — | — | 7:30 | — | — | 7:28 | — | — | 7:28 | — | — | 7:26 | — | — | |
5:30 | — | — | 5:31 | — | — | 5:31 | — | — | 5:32 | — | — | 5:34 | — | — | 5:35 | — | — | 5:36 | — | |
mm | — | — | 1 | 6 | 8 | — | 2 | — | — | — | — | — | — | — | — | — | — | 3 | 4 | 1 |
Temp °C | 15 | 14 | 13 | 8 | 10 | 11 | 11 | 10 | 12 | 12 | 10 | 12 | 12 | 10 | 13 | 14 | 9 | 11 | 9 | 10 |
Feels °C | 12 | 8 | 6 | 0 | 0 | 2 | 4 | 4 | 7 | 7 | 7 | 9 | 10 | 8 | 10 | 11 | 5 | 4 | 2 | 4 |
Swell 1 Height (m) Direction Period (s) | SW 13 | SW 14 | SW 16 | SW 15 | SW 14 | SW 16 | SW 15 | SSW 11 | SSW 10 | SW 12 | SW 12 | SSW 12 | SW 12 | SW 12 | SW 12 | SW 18 | SW 17 | SW 16 | SW 16 | SW 15 |
480 | 911 | 989 | 1547 | 3013 | 5720 | 3763 | 836 | 328 | 430 | 627 | 488 | 414 | 435 | 273 | 1945 | 2169 | 1364 | 1210 | 1361 | |
Swell 2 Height (m) Direction Period (s) | SW 14 | S 16 | WSW 12 | NNE 5 | — | — | — | SW 14 | SW 14 | S 9 | SW 23 | SSW 21 | SW 20 | SW 18 | SW 17 | — | — | NE 4 | SE 16 | WSW 18 |
238 | 5 | 111 | 10 | — | — | — | 1147 | 363 | 180 | 21 | 45 | 134 | 166 | 505 | — | — | 5 | 10 | 286 | |
Swell 3 Height (m) Direction Period (s) | — | — | NE 5 | — | — | — | — | — | WSW 13 | SSW 13 | S 14 | S 12 | S 13 | S 12 | S 18 | — | — | — | — | — |
— | — | 23 | — | — | — | — | — | 295 | 69 | 4 | 3 | 3 | 3 | 6 | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | NNE 4 | N 3 | NW 3 | SW 13 | SW 16 | SW 15 | — | — | — | — | — | — | — | — | — | — | N 3 | — | — |
— | 17 | 7 | 4 | 4790 | 10362 | 11461 | — | — | — | — | — | — | — | — | — | — | 8 | — | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 0 | 20 | 397 | 390 | 557 | 674 | 59 | 0 | 0 | 35 | 0 | 0 | 0 | 0 | 18 | 0 | 20 | 182 | 0 | 35 |
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.










