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Portsea Back Beach Surf Forecast
/ VIC – Mornington Peninsula (24 breaks) / Victoria (127 breaks) /
Surf Forecasts:
Portsea Back Beach surfForecast / VIC – Mornington Peninsula / Australia
16 Day Weather and Surf, issued 9 am Thursday 28 May 2026 AESTForecast update in hr min s Forecast update imminent
Portsea Back Beach surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Portsea Back Beach sea temperature is
16.1° C
(Which is 1.2°C warmer than normal for this time of year)Portsea Back Beach surf forecast from 28 May 2026:
- Best quality surf: Friday 29 May, 7PM (local time) - 2ft (0.6m), 14s period, SW swell with cross-offshore winds.
- Most powerful swell: Sunday 31 May, 7PM (local time) - 11ft (3.5m), 12s period, WSW swell with 3,832 kJ wave energy.
- Next surfable swell (1★+): Friday 29 May, 7PM (local time) - 2ft (0.6m), 14s 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 Friday (May 29) at 7PM. The primary swell is predicted to be 0.6m and 14s period with a secondary swell of 0.3m and 5s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Portsea Back Beach in the next 16 days are 3.5m 12s and forecast to arrive on Sunday (May 31) at 7PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 5s period and expected on Tuesday (Jun 02) at 1AM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7PM (Fri 29th May) | 2ft (0.6m) 14s |
| Best Surf | 7PM (Fri 29th May) | 2ft (0.6m) 14s |
| Most Powerful | 7PM (Sun 31st May) | 11ft (3.5m) 12s |
Table - best surf conditions forecast for Portsea Back Beach over the next 16 days.
Updates in hr min s Forecast update imminent
Short Range ForecastLight rain (total 4mm), mostly falling on Sat night. Very mild (max 16°C on Sat morning, min 10°C on Thu night). Winds increasing (calm on Thu morning, fresh winds from the WNW by Sat night). | Days 4-6 Weather SummaryHeavy rain (total 20mm), heaviest during Mon afternoon. Very mild (max 14°C on Tue afternoon, min 10°C on Sun night). Winds increasing (moderate winds from the NW on Sun night, near gales from the N by Mon night). | ||||||||||||||||||||
Thursday 28 | Friday 29 | Saturday 30 | Sunday 31 | Monday 1 | Tuesday 2 | Wednesday 3 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
SW 12 | SW 18 | WSW 12 | SW 15 | SW 14 | SW 13 | SW 13 | SW 12 | WSW 9 | WSW 11 | SW 12 | WSW 12 | SW 12 | SW 12 | SW 11 | SW 10 | SW 16 | SW 14 | SW 8 | SW 9 | SSW 9 | |
148 | 118 | 93 | 106 | 103 | 142 | 80 | 73 | 374 | 955 | 2770 | 2612 | 1271 | 840 | 422 | 200 | 203 | 350 | 1310 | 1840 | 676 | |
Wind (km/h) | |||||||||||||||||||||
cross-on | cross-on | on | cross | cross-on | cross | cross | cross-on | cross | cross | cross-on | cross-on | cross-off | cross-off | cross-off | cross-off | cross-off | cross-on | cross-on | cross-on | cross | |
High Tide | 8:47PM1.33m | 10:26AM1.36m | 9:37PM1.32m | 11:25AM1.42m | 10:26PM1.32m | 12:15PM1.48m | 11:15PM1.32m | 12:58PM1.53m | 00:01AM1.32m | 1:37PM1.57m | 00:45AM1.31m | 2:15PM1.59m | 1:28AM1.30m | ||||||||
Low Tide | 2:57PM0.81m | 3:32AM0.43m | 4:06PM0.85m | 4:25AM0.39m | 5:11PM0.86m | 5:14AM0.35m | 6:08PM0.84m | 5:58AM0.31m | 6:56PM0.81m | 6:40AM0.27m | 7:40PM0.77m | 7:19AM0.25m | 8:20PM0.72m | ||||||||
 | |  |  |  | | |  |  | |  |  | |  |  | | | | | | | |
 | 7:24 | — | — | 7:26 | — | — | 7:26 | — | — | 7:26 | — | — | 7:28 | — | — | 7:28 | — | — | 7:28 | — | — |
 | — | 5:10 | — | — | 5:09 | — | — | 5:09 | — | — | 5:08 | — | — | 5:08 | — | — | 5:07 | — | — | 5:07 | — |
— | — | — | — | — | — | — | 1 | 3 | 2 | 1 | — | — | 6 | 3 | 1 | 6 | 1 | 1 | — | 2 | |
Temp °C | 14 | 14 | 13 | 13 | 15 | 13 | 16 | 16 | 12 | 11 | 12 | 11 | 13 | 11 | 12 | 13 | 14 | 14 | 13 | 13 | 11 |
14 | 13 | 12 | 11 | 12 | 9 | 10 | 10 | 6 | 3 | 5 | 4 | 5 | 2 | 1 | 4 | 6 | 7 | 5 | 5 | 5 | |
Swell 1 Height (m) Direction Period (s) | SW 12 | SW 12 | WSW 12 | SW 15 | SW 14 | SW 13 | SW 13 | SW 12 | WSW 12 | WSW 11 | — | SW 12 | SW 12 | SW 12 | SW 11 | SW 10 | SW 10 | SW 14 | SSW 15 | — | SW 13 |
 kJ | 148 | 118 | 93 | 106 | 103 | 142 | 80 | 73 | 94 | 955 | — | 2101 | 1271 | 840 | 422 | 200 | 142 | 350 | 21 | — | 205 |
Swell 2 Height (m) Direction Period (s) | SSW 4 | SSW 6 | SW 16 | WSW 11 | WSW 11 | SSW 4 | SE 10 | SW 7 | SE 10 | SE 10 | — | — | — | SW 20 | SW 18 | SW 16 | SW 16 | E 10 | — | — | SW 19 |
| kJ | 12 | 17 | 93 | 50 | 49 | 2 | 4 | 22 | 4 | 4 | — | — | — | 15 | 108 | 165 | 203 | 2 | — | — | 15 |
Swell 3 Height (m) Direction Period (s) | SE 5 | SW 18 | SW 6 | SW 6 | SW 6 | ESE 10 | — | SE 10 | — | — | — | — | — | SW 20 | S 18 | E 9 | SE 9 | SE 9 | — | — | E 10 |
| kJ | 7 | 79 | 9 | 12 | 5 | 10 | — | 4 | — | — | — | — | — | 15 | 6 | 2 | 3 | 3 | — | — | 2 |
Wind waves Height (m) Direction Period (s) | — | SW 4 | SW 4 | — | SW 4 | NW 3 | W 4 | W 4 | WSW 9 | NW 4 | SW 12 | WSW 12 | NW 3 | N 4 | N 5 | N 5 | N 4 | WSW 4 | SW 8 | SW 9 | SSW 9 |
| kJ | — | 5 | 2 | — | 3 | 4 | 23 | 15 | 374 | 40 | 2770 | 2612 | 6 | 18 | 143 | 66 | 7 | 15 | 1310 | 1840 | 676 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 13 | 35 | 17 | 13 | 13 | 27 | 27 | 27 | 25 | 33 | 500 | 27 | 17 | 54 | 63 | 63 | 68 | 66 | 500 | 511 | 25 |
Best forecast wave conditions in Mornington Peninsula | |||||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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 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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