
Surf Forecasts:
Cyrils and Big Left surf forecast from 28 Jul 2026:
- Best quality surf: Saturday 1 Aug, 1PM (local time) - 5ft (1.5m), 17s period, SW swell with offshore winds.
- Most powerful swell: Wednesday 29 Jul, 7AM (local time) - 16ft (5.0m), 16s period, SW swell with 13,118 kJ wave energy.
- Next surfable swell (1★+): Friday 31 Jul, 4AM (local time) - 5ft (1.6m), 12s period with SW swell.
Best Forecast Surf Conditions for Cyrils and Big Left this week:
The surf forecast for Cyrils and Big Left over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Jul 31) at 4AM. The primary swell is predicted to be 1.6m and 12s period with a secondary swell of 0.1m and 23s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Cyrils and Big Left in the next 16 days are 5.0m 16s and forecast to arrive on Wednesday (Jul 29) at 7AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 4s period and expected on Monday (Aug 03) at 4AM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Fri 31st Jul) | 5ft (1.6m) 12s |
| Best Surf | 1PM (Sat 1st Aug) | 5ft (1.5m) 17s |
| Most Powerful | 7AM (Wed 29th Jul) | 16ft (5.0m) 16s |
Table - best surf conditions forecast for Cyrils and Big Left over the next 16 days.
The Lowdown
Alright folks, Rusty here. Grab a coffee, let’s have a look at what’s coming our way.
This is a tough one to start. The first few days are a write-off with a massive, unruly SW swell getting hammered by strong winds. We’re talking about a solid 16ft swell on the 29th of July, but it’s arriving with a howling 31 mph cross-on wind, making it completely unsurfable. That kind of energy (11248) is just raw power, not rideable waves. We’ll have to sit tight through Wednesday and Thursday.
The water temp is about average for the time of year at Cyrils and Big Left, so no need for a thicker suit just yet.
Friday, 31st July is where things start to turn. The morning sees a dropping swell of 5ft from the SW, with a 12-second period, and the wind swings to a gentle offshore from the NW. It’s clean. The afternoon gets even better: the wind goes glassy, and the swell eases to 4ft. That’s the first real window, and it’s a good one for a late session.
Saturday, 1st August morning is small and a bit awkward at 3ft with a very long 18-second period, but the afternoon is the real standout of the first week. The swell bumps up to 6ft from the SW, period is a solid 17 seconds, and the wind is a moderate offshore from the north. It’s going to be clean and lined up. The energy reading (1768) backs that up. This is your best bet for the near term. Expect some company out there, as crowds are sometimes an issue, but for a reef break like this, that long-period groundswell will really shine.
Sunday, 2nd August has good surf, but the wind is strong (25 mph) which makes paddling a battle. The swell stays around 6ft, but it’s not as user-friendly.
We hit a bad stretch from the 3rd to the 6th of August. The wind goes ugly again, either cross or cross-on, and the swell quality drops right off. Not worth paddling out.
Friday, 7th August is a serious highlight. Morning has 4ft with a 17-second period and a clean offshore from the NNW. The afternoon is even cleaner: 4ft of very long-period SW groundswell (19 seconds) with a light offshore breeze. That’s an excellent window for experienced surfers who can handle a long-period reef break. The energy (1338) is moderate but the quality is top-notch. This is the pick of the entire 16-day run.
The following week (8th through 13th of August) gets mixed. The 8th and 9th offer some small, clean windows with the wind staying favourable, but the swell is modest. The 10th gets a strong offshore again, but also a strong breeze that makes it tricky. The 12th of August afternoon sees the swell push back up to 8ft with a strong offshore, but that’s getting into expert territory and the wind is very strong (28 mph). The 13th is blown out by a near gale.
So, to wrap it up: the best sessions are without a doubt Saturday afternoon the 1st of August and Friday afternoon the 7th of August. Get in the water then.
Rusty.
Short Range ForecastHeavy rain (total 21mm), heaviest during Tue night. Very mild (max 12°C on Wed afternoon, min 7°C on Tue night). Winds decreasing (near gales from the NW on Tue night, calm by Fri afternoon). | Days 5-7 Weather SummaryModerate rain (total 13mm), heaviest on Mon afternoon. Very mild (max 14°C on Sat afternoon, min 8°C on Sun night). Winds increasing (light winds from the NNE on Fri night, near gales from the WSW by Mon afternoon). | ||||||||||||||||||
Wednesday 29 | Thursday 30 | Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | ||||||||||||||
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) | WSW 14 | SW 16 | SW 16 | SW 14 | SW 13 | SW 13 | SW 12 | SW 12 | SW 12 | SW 12 | SW 18 | SW 17 | SW 17 | SW 16 | SW 16 | SW 15 | SW 14 | WSW 14 | SW 13 |
Wave Graph | |||||||||||||||||||
3451 | 11248 | 7396 | 3438 | 1619 | 1210 | 854 | 565 | 435 | 442 | 432 | 1613 | 2442 | 1901 | 1591 | 1048 | 928 | 1504 | 981 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-on | cross | cross | cross | cross | cross | off | glassy | cross-off | cross-off | off | cross-off | off | cross-off | cross-off | cross-off | cross | cross-on |
High Tide | 11:57AM1.74m | 10:58PM1.50m | 12:46PM1.82m | 00:05AM1.54m | 1:26PM1.90m | 1:02AM1.61m | 2:01PM1.96m | 1:51AM1.68m | 2:32PM2.01m | 2:34AM1.76m | 3:01PM2.03m | 3:15AM1.84m | |||||||
Low Tide | 4:41AM0.52m | 5:56PM1.09m | 5:41AM0.49m | 6:51PM0.98m | 6:33AM0.46m | 7:35PM0.86m | 7:19AM0.43m | 8:12PM0.73m | 8:00AM0.42m | 8:45PM0.61m | 8:38AM0.43m | 9:16PM0.49m | |||||||
— | 7:24 | — | — | 7:24 | — | — | 7:22 | — | — | 7:22 | — | — | 7:20 | — | — | 7:20 | — | — | |
— | — | 5:28 | — | — | 5:28 | — | — | 5:29 | — | — | 5:30 | — | — | 5:30 | — | — | 5:31 | — | |
mm | 9 | 2 | 1 | 3 | 2 | 1 | 3 | — | — | — | — | — | — | — | 1 | 3 | 2 | 7 | 4 |
Temp °C | 11 | 11 | 12 | 11 | 11 | 12 | 12 | 10 | 11 | 11 | 12 | 14 | 12 | 12 | 10 | 10 | 9 | 12 | 12 |
Feels °C | -1 | 0 | 4 | 2 | 5 | 5 | 6 | 7 | 9 | 9 | 6 | 8 | 7 | 2 | 0 | -1 | -1 | 2 | 2 |
Swell 1 Height (m) Direction Period (s) | SW 15 | — | SSW 15 | SSW 15 | SW 13 | SW 13 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 17 | SW 17 | SW 16 | SW 16 | SW 15 | SW 14 | WSW 14 | SW 13 |
953 | — | 128 | 42 | 1619 | 1210 | 854 | 565 | 435 | 442 | 338 | 1613 | 2442 | 1901 | 1591 | 1048 | 928 | 1504 | 981 | |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | S 9 | — | SW 24 | WSW 21 | SW 20 | SW 19 | SW 18 | SSW 16 | SSW 17 | SSW 18 | SSW 17 | SSW 16 | — | NNW 5 | S 18 |
— | — | — | — | 165 | — | 22 | 45 | 61 | 131 | 432 | 155 | 235 | 254 | 224 | 95 | — | 24 | 6 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | S 21 | S 20 | S 19 | SSW 17 | — | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | 9 | 8 | 7 | 58 | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | WSW 14 | SW 16 | SW 16 | SW 14 | — | SW 6 | — | — | — | — | — | — | NNW 4 | N 3 | NNW 4 | NW 4 | NW 4 | WSW 15 | WSW 7 |
3451 | 11248 | 7396 | 3438 | — | 60 | — | — | — | — | — | — | 7 | 5 | 11 | 31 | 45 | 974 | 173 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 494 | 319 | 294 | 58 | 1 | 62 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 89 | 92 | 62 | 266 | 266 | 319 |
Best forecast wave conditions in Mornington Peninsula | |||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||
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Information about the Cyrils and Big Left Surf forecast
The above surf forecast table for Cyrils and Big Left provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Cyrils and Big Left can be found by selecting the local surf guide option on the grey menu. Our Cyrils and Big Left 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 (Cyrils and Big Left) 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 Cyrils and Big Left 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.
Cyrils and Big Left is 30 km (19 miles) from Mornington. If you plan a holiday in Mornington Peninsula, look for hotels and other accommodation in Mornington. Mornington has rooms for a wide range of budgets as well as car hire and transport links.










