
Surf Forecasts:
Marengo surf forecast from 21 Jul 2026:
- Best quality surf: Friday 24 Jul, 4AM (local time) - 20ft (6.0m), 15s period, SW swell with cross-offshore winds.
- Most powerful swell: Friday 24 Jul, 4AM (local time) - 20ft (6.0m), 15s period, SW swell with 16,415 kJ wave energy.
- Next surfable swell (1★+): Wednesday 22 Jul, 7AM (local time) - 2.5ft (0.8m), 12s 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 Wednesday (Jul 22) at 7AM. The primary swell is predicted to be 0.8m and 12s period with a secondary swell of 0.5m and 8s. 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 6.0m 15s and forecast to arrive on Friday (Jul 24) at 4AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 3s period and expected on Monday (Jul 27) at 10AM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7AM (Wed 22nd Jul) | 2.5ft (0.8m) 12s |
| Best Surf | 4AM (Fri 24th Jul) | 20ft (6.0m) 15s |
| Most Powerful | 4AM (Fri 24th Jul) | 20ft (6.0m) 15s |
Table - best surf conditions forecast for Marengo over the next 16 days.
The Lowdown
Alright folks, Rusty here. We’ve got a solid run of surf on the way for Marengo, but you’ve gotta be ready for the serious size if you want the best of it.
## Imperial
The next few days start off small and clean but nothing to get too excited about. Tuesday afternoon, the 21st of July, you’ll see some 4ft swell from the southwest at 13 seconds. The water is sitting at 59°, which is about average for this time of year. It’s a light breeze, cross-off wind, and the energy is moderate (400). It’s surfable but not the standout.
The real news kicks off Thursday, the 23rd. That’s when the ocean wakes up. Thursday morning brings a massive 15ft southwest swell, with a period of 14 seconds and a combined energy of 10429 – that’s strong to very strong. The wind is offshore from the WSW at 15 mph, so it’s gonna be clean. But let me be clear: this is *not* for beginners. Over 8ft is expert territory, and this is well over that. The wind cranks up to 22 mph in the afternoon, making it even more challenging. If you’re not a seasoned charger, stay on the beach for this one.
Friday, the 24th, is the absolute standout. Morning sees a 16ft southwest swell, a 15-second period (very long period groundswell), and the energy is through the roof at 16612. The wind is a clean offshore 16 mph from the west. This is what you dream about. The long period will make it powerful and hold up well on the reef and point setup at Marengo. It’s only for experts, but if you’re one of them, this is your window. The afternoon stays similar but with a bit more wind.
The energy drops a bit over the weekend, but Saturday the 25th still has a 8ft SSW swell in the morning with offshore wind. It’s still clean and a notch down in size for the brave intermediates. Sunday the 26th is a nice, manageable 5ft southwest swell with gentle offshore wind – a good day for the less experienced.
Then, a real hidden gem pops up on Tuesday the 28th of July. Tuesday afternoon turns glassy – zero wind, a 16ft WSW swell, and a 14-second period. The energy is 11908. The wind is glassy calm. That is a rare combination of massive size and absolute perfection. Pure magic for the experts.
The first week of August sees the swell fade back to small, 4ft to 5ft, with periods dropping. The winds are less reliable, often cross or cross-on, and the energy is weak to moderate. Wednesday the 5th of August has clean conditions but small, 4ft swell. It’s a quiet end to the period.
Remember, this is a reef and point break, so it handles the big south-west swells well, but it can get crowded here sometimes. The water stays about average for the season.
Rusty out.
Short Range ForecastModerate rain (total 14mm), heaviest on Tue night. Very mild (max 14°C on Tue afternoon, min 8°C on Wed night). Winds increasing (light winds from the NNW on Tue afternoon, fresh winds from the WSW by Thu night). | Days 5-7 Weather SummaryModerate rain (total 12mm), heaviest on Fri night. Very mild (max 15°C on Mon morning, min 10°C on Sun night). Winds decreasing (fresh winds from the W on Fri afternoon, light winds from the NW by Sun afternoon). | |||||||||||||||||||
Tue 21 | Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | Monday 27 | ||||||||||||||
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 12 | SW 13 | SW 13 | SW 14 | SW 14 | SW 15 | SW 15 | SW 14 | SW 13 | SSW 13 | SW 12 | SW 12 | SW 11 | SW 11 | SW 10 | SW 10 | WSW 11 | WSW 12 |
Wave Graph | ||||||||||||||||||||
400 | 149 | 244 | 231 | 5119 | 8055 | 4858 | 8882 | 11140 | 9730 | 7721 | 1771 | 4001 | 857 | 493 | 273 | 124 | 157 | 1656 | 4869 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | off | off | off | off | cross-off | off | off | off | off | cross-off | off | off | off | cross-off | cross-off | off | cross-off |
High Tide | 5:40PM1.96m | 5:12AM1.95m | 6:35PM1.90m | 5:44AM1.79m | 7:37PM1.83m | 6:15AM1.64m | 8:47PM1.79m | 6:48AM1.51m | 10:02PM1.80m | 7:34AM1.41m | 11:14PM1.86m | 9:13AM1.34m | 00:12AM1.95m | |||||||
Low Tide | 11:22PM0.82m | 11:48AM0.28m | 00:10AM0.99m | 12:28PM0.34m | 1:06AM1.15m | 1:12PM0.42m | 2:29AM1.28m | 2:07PM0.50m | 4:25AM1.33m | 3:17PM0.56m | 6:03AM1.28m | 4:30PM0.58m | ||||||||
— | — | 7:35 | — | — | 7:35 | — | — | 7:35 | — | — | 7:33 | — | — | 7:33 | — | — | 7:31 | — | — | |
5:25 | — | — | 5:27 | — | — | 5:27 | — | — | 5:28 | — | — | 5:29 | — | — | 5:30 | — | — | 5:30 | — | |
mm | — | 3 | 2 | 1 | 3 | 2 | 2 | 1 | — | 1 | 4 | 3 | 1 | 3 | — | — | — | — | — | — |
Temp °C | 14 | 11 | 11 | 12 | 10 | 10 | 10 | 11 | 12 | 12 | 13 | 12 | 12 | 12 | 13 | 13 | 12 | 15 | 14 | 12 |
Feels °C | 11 | 7 | 7 | 7 | 5 | 1 | 1 | 2 | 5 | 6 | 8 | 7 | 7 | 9 | 10 | 10 | 9 | 11 | 10 | 10 |
Swell 1 Height (m) Direction Period (s) | SW 13 | WSW 12 | SW 12 | SW 13 | SW 14 | SW 14 | SW 14 | SW 15 | SSW 15 | SSW 15 | SSW 14 | SSW 13 | SW 12 | SW 12 | SW 11 | SW 11 | SW 10 | SW 10 | SW 12 | SW 12 |
400 | 127 | 244 | 231 | 1680 | 2358 | 2606 | 5889 | 5472 | 3682 | 2775 | 1771 | 1366 | 857 | 493 | 273 | 124 | 157 | 993 | 970 | |
Swell 2 Height (m) Direction Period (s) | E 11 | SW 14 | SW 15 | E 10 | SE 14 | S 14 | SW 18 | — | — | — | — | — | — | SW 18 | SW 17 | S 10 | S 9 | SW 15 | — | SW 13 |
2 | 149 | 55 | 2 | 8 | 16 | 206 | — | — | — | — | — | — | 12 | 11 | 65 | 42 | 77 | — | 249 | |
Swell 3 Height (m) Direction Period (s) | — | E 11 | E 10 | — | — | — | — | — | — | — | — | — | — | — | — | WSW 16 | SW 16 | S 9 | — | — |
— | 2 | 2 | — | — | — | — | — | — | — | — | — | — | — | — | 26 | 38 | 6 | — | — | |
Wind waves Height (m) Direction Period (s) | — | — | NW 2 | WSW 7 | SW 13 | SW 14 | SW 14 | SW 15 | SW 15 | SW 14 | SW 13 | — | SW 12 | — | — | — | — | NNW 3 | WSW 11 | WSW 12 |
— | — | 1 | 31 | 5119 | 8055 | 4858 | 8882 | 11140 | 9730 | 7721 | — | 4001 | — | — | — | — | 8 | 1656 | 4869 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 0 | 21 | 21 | 0 | 0 | 2 | 557 | 557 | 76 | 583 | 37 | 0 | 59 | 0 | 0 | 0 | 0 | 21 | 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.










