Surf Forecasts:
Marengo surf forecast from 27 Aug 2026:
- Best quality surf: Wednesday 2 Sep, 1PM (local time) - 11ft (3.5m), 14s period, WSW swell with offshore winds.
- Most powerful swell: Wednesday 2 Sep, 1PM (local time) - 11ft (3.5m), 14s period, WSW swell with 4,594 kJ wave energy.
- Next surfable swell (1★+): Thursday 27 Aug, 7PM (local time) - 1.5ft (0.5m), 20s 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 (Aug 27) at 7PM. The primary swell is predicted to be 0.5m and 20s period with a secondary swell of 0.7m and 14s. Another secondary swell of 0.6m and 10s 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 3.5m 14s and forecast to arrive on Wednesday (Sep 02) at 1PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 3s period and expected on Tuesday (Sep 01) at 10AM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7PM (Thu 27th Aug) | 1.5ft (0.5m) 20s |
| Best Surf | 1PM (Wed 2nd Sep) | 11ft (3.5m) 14s |
| Most Powerful | 1PM (Wed 2nd Sep) | 11ft (3.5m) 14s |
Table - best surf conditions forecast for Marengo over the next 16 days.
The Lowdown
G'day, I'm Rusty. Let's break down what's coming our way for Marengo (reef and point). The water's sitting at 57°, which is about what you'd expect for this time of year, so no nasty surprises there.
We've got a bit of a slow start. Thursday morning the 27th kicks off with small 3 ft SSW swell and glassy conditions, but it's pretty weak with energy at 312. Not much to get excited about. Thursday afternoon stays small, dropping to 2 ft.
Friday the 28th is where things start to get interesting. Morning sees a solid 5 ft SW swell with a period of 18 seconds, and offshore wind from the west at 9 mph. That's clean, long-period groundswell pouring in with energy of 1529, so it's got some grunt. This is a standout for experienced surfers. Friday afternoon holds similar size and direction, still clean.
Saturday the 29th is looking good too. Morning has 4 ft SW swell, offshore wind, and clean waves. But the standout is Saturday afternoon – 8 ft WSW swell, a period of 14 seconds, and moderate offshore breeze at 12 mph. The energy jumps to 3313, and it's labeled excellent for experienced surfers. This is the best of the first week.
Sunday the 30th keeps the run going with 6 ft to 6 ft SSW to SW swell, offshore winds, and clean conditions. The energy is over 1000, so there's plenty of push. Monday the 31st is another cracker, with 6 ft to 7 ft SW swell, long periods of 14 to 17 seconds, and light winds. Energy peaks at 3455 on Monday afternoon. Perfect for experienced surfers.
Tuesday the 1st of September starts to get messy. Morning has 6 ft SW swell but a fresh 19 mph cross-off wind from the NNW, making it tricky. Afternoon drops to 5 ft and the wind picks up to 22 mph, so that's a write-off. Wednesday the 2nd brings a big change. Morning has 6 ft SW swell with offshore wind, but the real standout is Wednesday afternoon – a massive 13 ft WSW swell, 14-second period, and offshore wind. The energy is 7243, and it's exceptional for expert surfers only. This is the second standout of the outlook.
Thursday the 3rd and Friday the 4th have solid 8 ft to 8 ft SW swell, but cross-off winds and marginal conditions. The energy is high, but it's not as clean. Saturday the 5th has strong winds, 22 to 25 mph, making it tough to paddle into. Sunday the 6th afternoon sees a 10 ft SW swell with light winds, but Monday the 7th afternoon is a beast – 16 ft W swell, glassy conditions, and energy of 12205. That's serious, expert-only territory.
The second week has some big swell but often with strong winds. Wednesday the 9th has 20 ft WSW swell, but it's too big for this break. Thursday the 10th has 16 ft to 18 ft swell with offshore winds, but it's still massive. Friday the 11th eases to 10 ft SW swell with light winds, which is a more manageable size for experts.
The standout sessions are Friday morning the 28th for the clean, long-period groundswell, and Saturday afternoon the 29th for the solid 8 ft swell with offshore wind. For the second week, Wednesday afternoon the 2nd is the one to watch – that 13 ft swell with offshore wind is exceptional, but it's a long way out, so keep an eye on the forecasts.
Rusty
Short Range ForecastMostly dry. Very mild (max 13°C on Sun morning, min 8°C on Fri night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 3mm), mostly falling on Tue afternoon. Very mild (max 19°C on Tue morning, min 9°C on Sun night). Winds increasing (calm on Mon afternoon, fresh winds from the NNW by Tue morning). | |||||||||||||||||||
Thu 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 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 21 | WSW 19 | SW 18 | SW 16 | SW 16 | SW 14 | SW 14 | SSW 14 | SSW 13 | SW 13 | SW 14 | SW 15 | SW 17 | SW 16 | SW 16 | SW 15 | SW 15 | SW 15 | SW 14 | SW 14 |
Wave Graph | ||||||||||||||||||||
125 | 470 | 1518 | 1436 | 1101 | 746 | 1558 | 731 | 961 | 1094 | 1533 | 1542 | 1074 | 1829 | 1265 | 975 | 1020 | 1185 | 899 | 961 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | off | cross-off | off | off | off | off | off | off | off | off | glassy | cross-off | cross-off | cross-off | off | off | off | cross-off |
High Tide | 1:03AM2.01m | 12:54PM1.66m | 1:30AM2.07m | 1:34PM1.85m | 1:54AM2.10m | 2:10PM2.02m | 2:18AM2.10m | 2:45PM2.16m | 2:42AM2.08m | 3:20PM2.25m | 3:05AM2.04m | 3:56PM2.28m | 3:30AM1.99m | |||||||
Low Tide | 6:16PM0.66m | 7:25AM0.89m | 7:00PM0.61m | 7:46AM0.73m | 7:39PM0.57m | 8:08AM0.57m | 8:14PM0.56m | 8:31AM0.41m | 8:49PM0.57m | 8:57AM0.27m | 9:22PM0.62m | 9:24AM0.14m | 9:55PM0.70m | |||||||
— | — | 6:54 | — | — | 6:52 | — | — | 6:52 | — | — | 6:50 | — | — | 6:48 | — | — | 6:47 | — | — | |
5:58 | — | — | 5:59 | — | — | 5:59 | — | — | 6:00 | — | — | 6:00 | — | — | 6:01 | — | — | 6:02 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | 1 | — | — | — |
Temp °C | 12 | 10 | 12 | 12 | 8 | 12 | 12 | 9 | 13 | 12 | 9 | 14 | 13 | 13 | 19 | 15 | 14 | 13 | 14 | 12 |
Feels °C | 9 | 8 | 9 | 9 | 5 | 7 | 8 | 6 | 9 | 8 | 7 | 13 | 12 | 11 | 12 | 10 | 10 | 7 | 9 | 8 |
Swell 1 Height (m) Direction Period (s) | SSW 11 | WSW 14 | SW 18 | SW 16 | SW 16 | SW 14 | SW 14 | SSW 14 | SSW 13 | SW 13 | SW 14 | SW 15 | SW 14 | SW 16 | SW 16 | SW 15 | SW 15 | SW 15 | SW 14 | SW 14 |
117 | 323 | 1518 | 1436 | 1101 | 746 | 641 | 731 | 961 | 1094 | 1533 | 1542 | 852 | 1829 | 1265 | 975 | 1020 | 1185 | 899 | 961 | |
Swell 2 Height (m) Direction Period (s) | WSW 14 | WSW 19 | ESE 11 | SE 10 | — | — | SW 23 | WSW 13 | SW 20 | SW 20 | S 15 | SW 20 | SW 17 | S 15 | S 16 | S 16 | — | — | S 16 | S 16 |
125 | 470 | 11 | 4 | — | — | 21 | 116 | 136 | 61 | 18 | 373 | 1074 | 18 | 5 | 5 | — | — | 5 | 5 | |
Swell 3 Height (m) Direction Period (s) | SW 21 | S 10 | — | — | — | — | E 9 | SW 21 | S 15 | — | — | S 14 | — | — | — | — | — | — | — | — |
113 | 54 | — | — | — | — | 2 | 72 | 18 | — | — | 4 | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | SW 14 | — | — | — | — | — | — | — | N 3 | NNW 3 | — | — | SW 6 | — |
— | — | — | — | — | — | 1558 | — | — | — | — | — | — | — | 5 | 3 | — | — | 40 | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 563 | 454 | 0 | 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.











