Surf Forecasts:
Portsea Back Beach surf forecast from 7 Nov 2026:
- Best quality surf: Tuesday 10 Nov, 8AM (local time) - 2.5ft (0.8m), 16s period, SW swell with cross-offshore winds.
- Most powerful swell: Saturday 7 Nov, 11AM (local time) - 10ft (3.0m), 14s period, SW swell with 2,760 kJ wave energy.
- Next surfable swell (1★+): Monday 9 Nov, 11AM (local time) - 4ft (1.2m), 11s period with SW swell.
Best Forecast Surf Conditions for Portsea Back Beach this week:
The surf forecast for Portsea Back Beach over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Nov 09) at 11AM. The primary swell is predicted to be 1.2m and 11s period. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Portsea Back Beach in the next 16 days are 3.0m 14s and forecast to arrive on Saturday (Nov 07) at 11AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 6s period and expected on Monday (Nov 09) at 8PM.
| Wave Type | Time (AEDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11AM (Mon 9th Nov) | 4ft (1.2m) 11s |
| Best Surf | 8AM (Tue 10th Nov) | 2.5ft (0.8m) 16s |
| Most Powerful | 11AM (Sat 7th Nov) | 10ft (3.0m) 14s |
Table - best surf conditions forecast for Portsea Back Beach over the next 16 days.
Short Range ForecastLight rain (total 6mm), mostly falling on Fri night. Very mild (max 16°C on Fri night, min 9°C on Mon morning). Winds decreasing (strong winds from the SSW on Sat afternoon, light winds from the E by Mon afternoon). | Days 5-7 Weather SummaryMostly dry. Warm (max 22°C on Tue afternoon, min 11°C on Wed night). Winds increasing (light winds from the NNE on Mon night, fresh winds from the S by Tue night). | ||||||||||||||||||
Saturday 7 | Sunday 8 | Monday 9 | Tuesday 10 | Wednesday 11 | Thursday 12 | ||||||||||||||
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 14 | SW 14 | SW 13 | SW 13 | SW 12 | SSW 12 | SW 12 | SW 11 | SW 11 | SW 11 | SW 15 | SW 16 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SW 12 |
Wave Graph  | |||||||||||||||||||
 kJ | 3171 | 2760 | 2474 | 1286 | 1100 | 1022 | 614 | 369 | 273 | 278 | 421 | 864 | 821 | 787 | 810 | 765 | 609 | 591 | 580 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | cross-on | cross-on | cross | cross-off | off | cross | cross-off | off | off | cross-on | cross-on | on | cross-on | cross-on | cross-on | cross-on |
High Tide | 10:09PM1.21m | 10:12AM1.21m | 11:31PM1.29m | 11:11AM1.23m | 00:36AM1.38m | 12:05PM1.26m | 1:28AM1.47m | 12:52PM1.29m | 2:11AM1.53m | 1:35PM1.31m | 2:50AM1.57m | 2:14PM1.32m | 3:26AM1.58m | ||||||
Low Tide | 4:11AM0.63m | 4:46PM0.41m | 5:32AM0.66m | 5:48PM0.32m | 6:38AM0.66m | 6:40PM0.25m | 7:30AM0.64m | 7:24PM0.18m | 8:13AM0.62m | 8:04PM0.14m | 8:53AM0.60m | 8:41PM0.12m | |||||||
 |  |  |  |  | |  | | |  |  | | | | | | | | | |
 | — | 6:07 | — | — | 6:05 | — | — | 6:05 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — |
 | 8:00 | — | 8:01 | — | — | 8:02 | — | — | 8:04 | — | — | 8:05 | — | — | 8:06 | — | — | 8:07 | — |
mm | 4 | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 16 | 11 | 12 | 12 | 12 | 12 | 11 | 11 | 16 | 16 | 18 | 22 | 20 | 12 | 12 | 12 | 12 | 13 | 12 |
Feels °C | 11 | 2 | 2 | 3 | 6 | 6 | 6 | 6 | 11 | 12 | 14 | 20 | 17 | 6 | 6 | 6 | 9 | 9 | 9 |
Swell 1 Height (m) Direction Period (s) | SW 14 | SSW 14 | — | SW 13 | SW 12 | SSW 12 | SW 12 | SW 11 | SW 11 | SW 11 | SW 15 | SW 16 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SW 12 |
| kJ | 1918 | 68 | — | 1286 | 1100 | 1022 | 614 | 369 | 273 | 278 | 421 | 864 | 821 | 787 | 810 | 765 | 609 | 591 | 580 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | ESE 6 | SW 11 | SE 11 | ESE 10 | SE 10 | SE 9 | SE 9 | SE 8 | SE 8 | E 8 |
| kJ | — | — | — | — | — | — | — | — | — | 55 | 142 | 19 | 10 | 4 | 3 | 3 | 3 | 2 | 1 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | SSW 18 | ESE 5 | SSW 15 | SSW 15 | ESE 10 | ESE 9 | SE 9 | SE 8 | SSW 14 | — |
| kJ | — | — | — | — | — | — | — | — | — | 32 | 15 | 47 | 45 | 9 | 8 | 3 | 3 | 18 | — |
Wind waves Height (m) Direction Period (s) | SW 14 | SW 14 | SW 13 | S 6 | SSE 5 | SE 5 | ESE 4 | ESE 5 | SE 5 | — | — | SE 5 | SE 4 | S 4 | S 5 | SSW 6 | S 6 | S 6 | — |
| kJ | 3171 | 2760 | 2474 | 143 | 37 | 19 | 21 | 38 | 38 | — | — | 8 | 9 | 28 | 82 | 139 | 89 | 39 | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 25 | 564 | 778 | 403 | 44 | 44 | 4 | 0 | 155 | 4 | 0 | 0 | 138 | 524 | 544 | 43 | 43 | 44 | 44 |
Best forecast wave conditions in Mornington Peninsula | |||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||
Header Global | |||||||||||||||||||
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Information about the Portsea Back Beach Surf forecast
The above surf forecast table for Portsea Back Beach provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Portsea Back Beach can be found by selecting the local surf guide option on the grey menu. Our Portsea Back Beach 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 (Portsea Back Beach) 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 Portsea Back Beach 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.
Portsea Back Beach is 29 km (18 miles) from Geelong. If you plan a holiday in Mornington Peninsula, look for hotels and other accommodation in Geelong. Geelong has rooms for a wide range of budgets as well as car hire and transport links.
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