
Surf Forecasts:
Marengo surf forecast from 18 Jul 2026:
- Best quality surf: Thursday 23 Jul, 7PM (local time) - 8ft (2.5m), 14s period, SW swell with offshore winds.
- Most powerful swell: Thursday 23 Jul, 7AM (local time) - 16ft (5.0m), 14s period, SW swell with 10,229 kJ wave energy.
- Next surfable swell (1★+): Sunday 19 Jul, 4AM (local time) - 2.5ft (0.7m), 13s 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 Sunday (Jul 19) at 4AM. The primary swell is predicted to be 0.7m and 13s period with a secondary swell of 0.7m and 11s. 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 14s and forecast to arrive on Thursday (Jul 23) 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 0.4m 2s period and expected on Wednesday (Jul 22) at 7AM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Sun 19th Jul) | 2.5ft (0.7m) 13s |
| Best Surf | 7PM (Thu 23rd Jul) | 8ft (2.5m) 14s |
| Most Powerful | 7AM (Thu 23rd Jul) | 16ft (5.0m) 14s |
Table - best surf conditions forecast for Marengo over the next 16 days.
The Lowdown
G'day, Rusty here, and I've got the lowdown on the Marengo stretch. This is a reef and point set-up that's fairly consistent, and it likes a swell from the SSW. The water's sitting at 59°F right now, which is about 2°F warmer than normal for this time of year, so it's a bit of a treat.
We're looking at a solid run of surf starting this weekend. Saturday afternoon, the 18th of July, kicks things off with a clean 4ft swell from the SW, and it's dead glassy. The combined energy is moderate at 451. It's a good start, but the real promise builds from there.
Sunday morning, the 19th, is glassy again with a 3ft SSW swell, though it's a touch smaller. The energy is still moderate at 330. Sunday afternoon gets a bit lumpy with a cross-on breeze, so I'd stick to the morning.
Now, Monday the 20th looks interesting. The morning has a clean 3ft WSW swell with a long period of 16 seconds, and a cross-off breeze. That's a groundswell, and it's going to wrap nicely into the point. The energy is moderate at 359.
Tuesday the 21st is where we start to get some juice. The morning sees a 4ft SW swell with a 14-second period, clean cross-off winds, and the combined energy hits 547 – a solid moderate level. This is a good, surfable wave for most.
The standout, though, is the swell that kicks in mid-week. Wednesday the 22nd afternoon suddenly jumps to a 10ft SW swell, but the period is only 10 seconds, and the wind is a fresh 30 km/h cross-off. The combined energy is massive at 3022, but that short period and strong wind make it a bit of a beast. This is for experienced surfers only, and honestly, with that much wind and a short-period swell, the setup might be more interesting for kite surfing than paddle surfing at a beach break. Thursday the 23rd morning is even bigger with an 12ft SW swell (14-second period) and a combined energy of 8023, but again, strong winds. It's big, raw, and powerful.
The best window for the capable crew looks to be Thursday the 24th. The morning has an 12ft SW swell, a 14-second period, and *offshore* winds from the W at 30 km/h. The combined energy is a staggering 7127. This is a heavy, powerful, clean groundswell. It's a serious session for experts only. The afternoon drops to 8ft, still clean with offshore winds, so there's a chance to get a piece of it if you're good.
Friday the 25th is a great follow-up. The morning brings a 7ft SW swell with a 13-second period, clean cross-off winds, and a combined energy of 1524. It's a lot more manageable for a strong intermediate, and the conditions are excellent. The afternoon stays good with a 6ft swell.
After that, through the weekend and into the start of the next week, the surf drops back to the 3ft to 4ft range, but it stays clean with cross-off breezes. The energy is moderate, in the 300 to 500 range. It's small but fun.
Then, from the 28th of July, we get another pulse. Tuesday the 28th afternoon has a 10ft SW swell with a very long 16-second period and offshore winds. The combined energy is 4295. This is another big, clean groundswell for experts. The point break will handle that long period beautifully. Wednesday the 29th morning is a solid 7ft with a 14-second period and offshore winds, a great option for strong surfers.
The last true standout is the morning of Thursday the 30th of July. A 7ft SSW swell, dead glassy, with a combined energy of 1405. That's a clean, powerful, and manageable wave for experienced surfers.
After that, the wind turns onshore and the surf gets messy through the 31st and into the 1st of August, with poor conditions. We finally get a clean-up on Sunday the 2nd of August, with a 5ft WSW swell, a very long 17-second period, and light cross-off winds. The combined energy is 1329. It's a beautiful way to end the forecast period, but it's a long way out, so keep an eye on it.
So, the best on offer? For the biggest, most powerful, and cleanest waves, you're looking at Thursday the 24th of July morning. For a slightly more manageable but still excellent session, the morning of Friday the 25th and the morning of Thursday the 30th of July are your standouts. Crowds are possible at Marengo, so get in early.
Rusty.
Short Range ForecastMostly dry. Very mild (max 14°C on Sun morning, min 10°C on Sun night). Wind will be generally light. | Days 5-7 Weather SummaryModerate rain (total 10mm), heaviest on Wed morning. Very mild (max 14°C on Tue afternoon, min 9°C on Wed afternoon). Mainly fresh winds. | |||||||||||||||||||
Sat 18 | Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | ||||||||||||||
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 | WSW 13 | SSW 11 | SSW 11 | SW 18 | WSW 16 | SW 15 | SW 14 | SW 14 | SW 13 | SW 14 | SW 14 | SW 10 | SW 13 | SW 14 | SW 14 | SW 15 | SW 14 | SSW 14 | SSW 14 |
Wave Graph | ||||||||||||||||||||
451 | 219 | 164 | 158 | 150 | 326 | 220 | 214 | 540 | 400 | 147 | 164 | 1911 | 8918 | 5095 | 1052 | 2725 | 5239 | 2281 | 2250 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross | glassy | cross-on | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | off | off | cross-off |
High Tide | 3:31AM2.34m | 3:56PM1.99m | 4:06AM2.24m | 4:48PM1.99m | 4:40AM2.10m | 5:40PM1.96m | 5:12AM1.95m | 6:35PM1.90m | 5:44AM1.79m | 7:37PM1.83m | 6:15AM1.64m | 8:47PM1.79m | ||||||||
Low Tide | 9:05PM0.36m | 9:53AM0.40m | 9:51PM0.49m | 10:31AM0.31m | 10:37PM0.65m | 11:09AM0.27m | 11:22PM0.82m | 11:48AM0.28m | 00:10AM0.99m | 12:28PM0.34m | 1:06AM1.15m | 1:12PM0.42m | 2:29AM1.28m | |||||||
— | — | 7:37 | — | — | 7:37 | — | — | 7:37 | — | — | 7:35 | — | — | 7:35 | — | — | 7:35 | — | — | |
5:23 | — | — | 5:23 | — | — | 5:24 | — | — | 5:25 | — | — | 5:27 | — | — | 5:27 | — | — | 5:28 | — | |
mm | — | — | — | — | — | — | — | — | — | — | 1 | 5 | 2 | 2 | — | — | — | — | — | — |
Temp °C | 13 | 12 | 14 | 14 | 11 | 14 | 14 | 12 | 13 | 14 | 12 | 12 | 10 | 9 | 11 | 11 | 10 | 12 | 12 | 11 |
Feels °C | 12 | 9 | 12 | 12 | 8 | 11 | 12 | 9 | 10 | 11 | 7 | 6 | 3 | 2 | 4 | 4 | 4 | 6 | 7 | 8 |
Swell 1 Height (m) Direction Period (s) | SW 13 | WSW 13 | SSW 11 | SSW 11 | S 10 | WSW 16 | SW 15 | SW 14 | SW 14 | SW 13 | SW 12 | SW 8 | SW 12 | SW 14 | SW 14 | SSW 11 | SW 15 | SW 14 | SSW 14 | SSW 14 |
451 | 219 | 164 | 158 | 80 | 326 | 220 | 214 | 540 | 400 | 147 | 54 | 1111 | 3099 | 2928 | 904 | 2725 | 1888 | 2281 | 2250 | |
Swell 2 Height (m) Direction Period (s) | — | SSW 11 | WSW 13 | WSW 12 | SW 18 | SSW 10 | SSW 10 | SSW 10 | S 10 | E 11 | SW 14 | SW 14 | E 10 | — | — | SW 14 | — | — | S 14 | S 14 |
— | 135 | 106 | 60 | 150 | 33 | 19 | 10 | 7 | 2 | 116 | 164 | 2 | — | — | 1052 | — | — | 37 | 37 | |
Swell 3 Height (m) Direction Period (s) | — | SW 22 | SW 20 | SW 19 | WSW 12 | E 12 | E 11 | SW 18 | E 11 | — | E 11 | WSW 12 | — | — | — | — | — | — | — | — |
— | 18 | 60 | 58 | 58 | 3 | 2 | 13 | 2 | — | 2 | 56 | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | NW 2 | SW 10 | SW 13 | SW 14 | — | — | SW 14 | — | — |
— | — | — | — | — | — | — | — | — | — | — | 2 | 1911 | 8918 | 5095 | — | — | 5239 | — | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 0 | 18 | 0 | 18 | 0 | 0 | 0 | 0 | 0 | 0 | 21 | 21 | 76 | 38 | 76 | 59 | 0 | 37 | 2 | 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.










