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Portsea Back Beach Surf Forecast
/ VIC – Mornington Peninsula (24 breaks) / Victoria (127 breaks) /
Portsea Back Beach surfForecast / VIC – Mornington Peninsula / Australia
12 Day Weather and Surf, issued 3 am Friday 11 Jul 2025 AEST
Best Forecast Surf Conditions for Portsea Back Beach this week:
The surf forecast for Portsea Back Beach over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Jul 11) at 7PM. The primary swell is predicted to be 2.4m and 11s period with a secondary swell of 1.3m and 14s. Another secondary swell of 0.1m and 22s is also forecast. The wind is predicted to be cross-onshore as the swell arrives.
The most powerful waves expected at Portsea Back Beach in the next 12 days are 3.0m 19s and forecast to arrive on Friday (Jul 18) at 1AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 5s period and expected on Sunday (Jul 13) at 10AM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7PM (Fri 11th Jul) | 8ft (2.4m) 11s |
| Best Surf | 7AM (Mon 14th Jul) | 11ft (3.5m) 13s |
| Most Powerful | 1AM (Fri 18th Jul) | 10ft (3.0m) 19s |
Table - best surf conditions forecast for Portsea Back Beach over the next 12 days.
Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | Monday 21 | Tuesday 22 | |||||||||||||||||||||||||
| AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Rating (10 max) | ||||||||||||||||||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  |  |  |  |  |  | ||||||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||||||||||||||
| Period(s) (?) | 14 | 13 | 13 | 13 | 13 | 16 | 15 | 14 | 14 | 14 | 14 | 13 | 12 | 8 | 12 | 11 | 12 | 14 | 13 | 14 | 19 | 18 | 17 | 16 | 16 | 17 | 17 | 16 | 16 | 15 | 14 | 14 | 13 | 14 | 16 | 15 |
Wave (?)Graph  | ||||||||||||||||||||||||||||||||||||
| Energy (?) | 2047 | 2866 | 2187 | 2116 | 2564 | 2410 | 1458 | 1280 | 5192 | 3341 | 2257 | 1561 | 934 | 852 | 1252 | 1529 | 1907 | 2033 | 2822 | 4754 | 6682 | 4717 | 4543 | 6266 | 5712 | 6066 | 5265 | 2968 | 2426 | 1292 | 851 | 646 | 521 | 1655 | 2107 | 6866 |
Wind (km/h) | ||||||||||||||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | on | cross- on | cross | cross- off | cross- off | cross- off | cross | cross- on | cross- on | cross- on | cross | cross- on | on | cross | cross | cross | cross | cross- off | cross- off | cross- off | cross | cross- on | cross- on | cross- on | on | cross- on | cross- off | off | cross- off | cross- off | cross- off | cross- off | off | cross- off | cross- off |
High Tide / height (m) | 12:29PM 1.42 | 11:16PM 1.20 | 1:14PM 1.46 | 12:14AM 1.21 | 1:54PM 1.48 | 1:10AM 1.25 | 2:30PM 1.50 | 2:03AM 1.29 | 3:04PM 1.50 | 2:55AM 1.34 | 3:37PM 1.50 | 3:46AM 1.38 | 4:10PM 1.50 | 4:38AM 1.41 | 4:45PM 1.49 | 5:33AM 1.42 | 5:22PM 1.48 | 6:32AM 1.42 | 6:03PM 1.46 | 7:35AM 1.40 | 6:51PM 1.42 | 8:44AM 1.39 | 7:48PM 1.37 | |||||||||||||
Low Tide / height (m) | 6:27PM 0.84 | 6:05AM 0.27 | 7:16PM 0.77 | 6:54AM 0.24 | 7:58PM 0.69 | 7:42AM 0.23 | 8:36PM 0.60 | 8:27AM 0.25 | 9:12PM 0.52 | 9:11AM 0.29 | 9:50PM 0.44 | 9:54AM 0.37 | 10:29PM 0.36 | 10:37AM 0.46 | 11:11PM 0.30 | 11:23AM 0.57 | 11:57PM 0.26 | 12:12PM 0.68 | 12:48AM 0.24 | 1:08PM 0.79 | 1:45AM 0.23 | 2:13PM 0.86 | 2:48AM 0.24 | |||||||||||||
Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | Monday 21 | Tuesday 22 | |||||||||||||||||||||||||
| Sunrise | 7:37 | - | - | 7:35 | - | - | 7:35 | - | - | 7:35 | - | - | 7:35 | - | - | 7:35 | - | - | 7:33 | - | - | 7:33 | - | - | 7:33 | - | - | 7:31 | - | - | 7:31 | - | - | 7:31 | - | - |
| Sunset | - | 5:15 | - | - | 5:16 | - | - | 5:16 | - | - | 5:17 | - | - | 5:19 | - | - | 5:19 | - | - | 5:20 | - | - | 5:21 | - | - | 5:21 | - | - | 5:22 | - | - | 5:22 | - | - | 5:23 | - |
 |  |  |  | | | | |  | |  | |  | | | | | | | | | | | | | |  | | | | | | | | |  | |
Rain (mm) | - | 1 | - | - | - | - | - | 3 | 1 | - | - | - | 3 | - | - | - | - | 1 | 1 | - | - | - | 4 | 1 | 2 | - | - | - | - | - | - | 1 | - | - | - | 7 |
| Temp. °C | 14 | 13 | 12 | 14 | 15 | 13 | 15 | 14 | 9 | 9 | 10 | 9 | 10 | 11 | 10 | 13 | 14 | 12 | 14 | 15 | 13 | 13 | 12 | 11 | 11 | 11 | 10 | 9 | 11 | 9 | 11 | 10 | 10 | 13 | 15 | 12 |
| Feels °C (?) | 7 | 7 | 7 | 10 | 12 | 8 | 5 | 4 | 1 | 2 | 5 | 2 | 5 | 6 | 3 | 6 | 7 | 6 | 9 | 9 | 5 | 6 | 5 | 4 | 2 | 2 | 5 | 5 | 6 | 3 | 3 | 2 | 2 | 3 | 6 | 1 |
Short Range Forecast: Light rain (total 5mm), mostly falling on Sun afternoon. Very mild (max 15°C on Sat afternoon, min 8°C on Sun night). Winds increasing (light winds from the NW on Sat afternoon, strong winds from the NW by Sun afternoon). | Days 3-6 Weather Summary Light rain (total 4mm), mostly falling on Tue morning. Very mild (max 14°C on Wed afternoon, min 7°C on Mon night). Mainly fresh winds. | Days 6-9 Weather Summary Light rain (total 8mm), mostly falling on Fri afternoon. Very mild (max 15°C on Thu afternoon, min 8°C on Sat night). Winds decreasing (strong winds from the W on Fri night, light winds from the NW by Sat night). | Long Range Forecast: Light rain (total 8mm), mostly falling on Tue night. Very mild (max 15°C on Tue afternoon, min 7°C on Sun morning). Winds increasing (light winds from the NNW on Sun morning, near gales from the NNE by Tue night). | |||||||||||||||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Portsea Back Beach surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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 12 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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