
Surf Forecasts:
Sunderland Bay surf forecast from 9 Sep 2026:
- Best quality surf: Friday 11 Sep, 4AM (local time) - 6ft (1.8m), 15s period, SW swell with glassy winds.
- Most powerful swell: Thursday 10 Sep, 1AM (local time) - 10ft (3.0m), 18s period, SW swell with 6,323 kJ wave energy.
- Next surfable swell (1★+): Friday 11 Sep, 4AM (local time) - 6ft (1.8m), 15s period with SW swell.
Best Forecast Surf Conditions for Sunderland Bay this week:
The surf forecast for Sunderland Bay over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Sep 11) at 4AM. The primary swell is predicted to be 1.8m and 15s period. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Sunderland Bay in the next 16 days are 3.0m 18s and forecast to arrive on Thursday (Sep 10) at 1AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 4s period and expected on Monday (Sep 14) at 1AM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Fri 11th Sep) | 6ft (1.8m) 15s |
| Best Surf | 4AM (Fri 11th Sep) | 6ft (1.8m) 15s |
| Most Powerful | 1AM (Thu 10th Sep) | 10ft (3.0m) 18s |
Table - best surf conditions forecast for Sunderland Bay over the next 16 days.
The Lowdown
Right, let’s have a look at what’s on the cards for Sunderland Bay over the next couple of weeks. It’s a bit of a mixed bag, to be honest. We’ve got some serious size and energy early on, but the wind is going to be a major player, and it’s not always going to be on our side. The water temp is sitting at 57°F, which is about average for this time of year, so nothing weird going on there.
The first few days are going to be a write-off for most of us. Wednesday the 9th is looking wild – we’ve got a solid 10ft SW swell with a long 18-second period, and the energy is strong at 5792, but that 35 km/h SSW wind is just going to shred it. It’s all onshore, poor conditions. You’d be mad to paddle out unless you’re chasing a beating. Kite surfers might be having a field day, but that’s about it. Thursday the 10th cleans up a touch with 8ft SW, but it’s still marginal, and that 20 km/h SW wind keeps it ugly.
Now, Friday the 11th is where things start to get interesting. The morning is pure glass – zero wind – and we’ve still got 6ft of SW swell with a 15-second period. The energy is moderate at 1229. It’s not huge, but the conditions are primed. That’s your pick of the early window. Saturday morning the 12th is also a contender. The wind goes light offshore from the NNE, and we’ve got 6ft of SW swell with the same 15-second period, energy at 1513. It’s a touch bigger than Friday, and the offshore wind is going to make it clean. Both mornings are looking like proper surf. Saturday afternoon and Sunday are deteriorating with the wind swinging onshore and cross-off, and the swell backs right down.
After that, it’s a bit of a lull for a few days. Monday and Tuesday drop off significantly, the energy gets weak, and the wind is messy. It’s a waiting game.
We get a pulse back on Tuesday the 15th – 8ft SW, energy jumping to 1747 – but the wind is straight on it again from the SW at 25 km/h. Poor quality. That one’s for the kites again. Big numbers in the water, but not for paddling.
The next real standout is Saturday the 19th. The morning looks good with a light cross-off breeze from the ENE and 5ft of SW swell. The energy is modest at 654, but the wave comment is positive and it should be clean. After that, it’s a slow fade again into the second week. The swell drops away, the energy gets weak, and a fresh NW cross-off wind kicks in, which will keep things a bit wind-blown. There’s still some SW groundswell in the water, but the heights are small – around 3ft to 3ft. It’s small, but the period stays long, so there’s still a bit of push in the lines if you’ve got a longboard.
So, to sum it up: the pick of the whole stretch is Saturday morning the 12th. It’s got the size, the clean conditions, and the offshore wind. Friday morning the 11th is your backup for a glassy, smaller alternative. The rest is really just about picking through the scraps and waiting for that wind to drop. Keep an eye on it; long-range forecasts can change. This is Rusty, signing off.
Short Range ForecastMostly dry. Very mild (max 14°C on Sat morning, min 10°C on Wed night). Winds decreasing (fresh winds from the SSW on Wed afternoon, calm by Thu night). | Days 5-7 Weather SummaryMostly dry. Warm (max 21°C on Sun afternoon, min 11°C on Tue morning). Winds increasing (light winds from the SSE on Sat afternoon, fresh winds from the NW by Sun night). | |||||||||||||||||||
Wed 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | ||||||||||||||
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 18 | SW 18 | SW 17 | SW 16 | SW 16 | SW 15 | SW 15 | SW 16 | SW 16 | SW 15 | SW 15 | SW 15 | SW 15 | SW 15 | SW 14 | SW 13 | SW 10 | SW 12 | SW 13 | SW 14 |
Wave Graph | ||||||||||||||||||||
5419 | 6323 | 3334 | 2612 | 1719 | 1229 | 1540 | 1852 | 1513 | 1216 | 906 | 606 | 595 | 365 | 265 | 176 | 1115 | 1539 | 1668 | 1343 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | cross-on | cross-on | glassy | on | off | off | cross-on | off | cross-off | cross-off | cross-off | cross | cross-on | cross-on | on | on | cross-on |
High Tide | 8:51PM2.00m | 10:18AM2.07m | 10:16PM1.99m | 11:22AM2.11m | 11:35PM2.06m | 12:16PM2.17m | 00:42AM2.17m | 1:04PM2.24m | 1:37AM2.28m | 1:46PM2.28m | 2:25AM2.36m | 2:26PM2.30m | 3:08AM2.39m | |||||||
Low Tide | 3:33AM0.45m | 4:21PM0.91m | 4:47AM0.51m | 5:32PM0.76m | 5:55AM0.53m | 6:30PM0.57m | 6:53AM0.53m | 7:20PM0.40m | 7:43AM0.54m | 8:04PM0.27m | 8:28AM0.56m | 8:45PM0.19m | ||||||||
— | — | 6:28 | — | — | 6:26 | — | — | 6:24 | — | — | 6:24 | — | — | 6:22 | — | — | 6:20 | — | — | |
6:02 | — | — | 6:04 | — | — | 6:04 | — | — | 6:05 | — | — | 6:06 | — | — | 6:07 | — | — | 6:07 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 12 | 10 | 10 | 11 | 11 | 11 | 12 | 12 | 14 | 17 | 17 | 20 | 21 | 20 | 17 | 17 | 12 | 12 | 12 | 11 |
Feels °C | 4 | 4 | 5 | 7 | 9 | 8 | 9 | 10 | 11 | 13 | 13 | 15 | 15 | 15 | 13 | 11 | 5 | 5 | 6 | 6 |
Swell 1 Height (m) Direction Period (s) | SSW 18 | SW 18 | SW 17 | SW 16 | SW 16 | SW 15 | SW 15 | SW 16 | SW 16 | SW 15 | SW 15 | SW 15 | SW 15 | SW 15 | SW 14 | SW 13 | — | SW 16 | SW 13 | SW 14 |
373 | 6323 | 3334 | 2612 | 1719 | 1229 | 1540 | 1852 | 1513 | 1216 | 906 | 606 | 595 | 365 | 265 | 176 | — | 208 | 1668 | 1343 | |
Swell 2 Height (m) Direction Period (s) | — | SSW 18 | — | — | — | — | S 4 | — | — | — | — | — | SSW 16 | — | SW 20 | WSW 6 | — | — | — | — |
— | 454 | — | — | — | — | 3 | — | — | — | — | — | 26 | — | 15 | 16 | — | — | — | — | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SW 19 | — | — | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 15 | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | SW 18 | SW 18 | — | — | — | — | — | — | — | — | — | NW 3 | NNW 3 | NNW 4 | NW 3 | WNW 3 | SW 10 | SW 12 | — | — |
5419 | 5122 | — | — | — | — | — | — | — | — | — | 2 | 8 | 11 | 5 | 7 | 1115 | 1539 | — | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 1510 | 85 | 13 | 13 | 5 | 0 | 12 | 0 | 0 | 11 | 0 | 0 | 11 | 38 | 7 | 81 | 85 | 834 | 13 | 12 |
Best forecast wave conditions in Phillip Island | ||||||||||||||||||||
Best forecast wave conditions in Australia | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)
Information about the Sunderland Bay Surf forecast
The above surf forecast table for Sunderland Bay provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Sunderland Bay can be found by selecting the local surf guide option on the grey menu. Our Sunderland Bay 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 (Sunderland Bay) 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 Sunderland Bay 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.
Sunderland Bay is 39 km (24 miles) from Mornington. If you plan a holiday in Phillip Island, 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.










