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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
48hr Weather and Surf, issued 3 pm Sunday 17 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
16.3° C
(Which is 1.0°C warmer than normal for this time of year)How big are the waves at Portsea Back Beach today?
The current surf forecast for Portsea Back Beach at 10PM is: 1.5m 14s primary swell from a Southwest direction (forecast issued at 03:00pm May 17). An open ocean swell of 0.2m 9s is not directed at the surf break. The wind direction is predicted to be cross-onshore.
| Time (AEST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 May) | - | - |
| Afternoon (17 May) | 5ft (1.6m) | 14s |
| Evening (17 May) | 5ft (1.5m) | 14s |
Table - waves today at Portsea Back Beach. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Very mild (max 15°C on Sun afternoon, min 12°C on Mon night). Winds increasing (calm on Mon morning, fresh winds from the SW by Tue afternoon). | ||||||||||||||||||||||||
Sun 17 | Monday 18 | Tuesday 19 | Wed 20 | |||||||||||||||||||||
1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
WSW 14 | WSW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SW 13 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | WSW 12 | SW 11 | SW 11 | SW 6 | SW 11 | SW 11 | SW 10 | SW 10 | |
1126 | 921 | 799 | 816 | 840 | 792 | 757 | 746 | 723 | 609 | 540 | 471 | 463 | 367 | 361 | 309 | 500 | 726 | 875 | 317 | 897 | 224 | 672 | 370 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | glassy | glassy | glassy | cross | glassy | off | cross-on | cross-on | cross-on | cross-on | on | on | on | on | on | on | cross-on | cross-on | |
High Tide | 12:06PM1.51m | 11:20PM1.34m | 1:01PM1.60m | 00:14AM1.39m | 1:51PM1.67m | 1:07AM1.42m | ||||||||||||||||||
Low Tide | 6:03PM0.78m | 6:01AM0.20m | 7:00PM0.75m | 6:54AM0.13m | 7:51PM0.71m | 7:45AM0.10m | ||||||||||||||||||
 |  |  |  | | | | | |  | | | | | | | | | |  | | | | | |
 | — | — | — | — | — | — | 7:16 | — | — | — | — | — | — | — | 7:18 | — | — | — | — | — | — | — | 7:18 | — |
 | — | 5:17 | — | — | — | — | — | — | — | 5:16 | — | — | — | — | — | — | — | 5:15 | — | — | — | — | — | 5:15 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 16 | 15 | 15 | 15 | 15 | 14 | 14 | 14 | 15 | 15 | 15 | 15 | 14 | 13 | 12 | 13 | 15 | 14 | 14 | 13 | 13 | 13 | 12 | 13 |
15 | 13 | 14 | 14 | 14 | 13 | 14 | 14 | 15 | 14 | 15 | 15 | 13 | 11 | 9 | 10 | 11 | 7 | 7 | 7 | 7 | 7 | 8 | 10 | |
Swell 1 Height (m) Direction Period (s) | WSW 14 | WSW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SW 13 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 18 | SW 18 | SW 18 | SW 18 | SW 11 | SW 17 | SW 10 |
 kJ | 1126 | 921 | 799 | 816 | 840 | 792 | 757 | 746 | 723 | 609 | 540 | 471 | 463 | 367 | 361 | 309 | 303 | 114 | 154 | 197 | 199 | 224 | 243 | 370 |
Swell 2 Height (m) Direction Period (s) | E 8 | ESE 8 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | SW 20 | SW 19 | SW 20 | SW 19 | SE 9 | SE 9 | SE 9 | SE 9 | SW 18 | SE 10 | SW 17 |
| kJ | 11 | 7 | 7 | 7 | 7 | 7 | 8 | 8 | 8 | 9 | 9 | 9 | 8 | 60 | 133 | 97 | 59 | 3 | 3 | 3 | 3 | 194 | 4 | 241 |
Swell 3 Height (m) Direction Period (s) | — | — | SSW 14 | SSW 14 | SSW 15 | — | S 24 | S 24 | S 23 | SW 21 | SW 21 | SW 21 | SW 21 | SE 9 | SE 9 | SE 9 | SE 10 | S 18 | S 18 | S 18 | SE 10 | SE 10 | ESE 10 | SE 10 |
| kJ | — | — | 18 | 19 | 21 | — | 11 | 11 | 11 | 18 | 18 | 18 | 18 | 3 | 3 | 3 | 4 | 6 | 6 | 25 | 4 | 4 | 9 | 4 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | WSW 12 | SW 11 | SW 11 | SW 6 | SW 11 | SW 6 | SW 10 | S 5 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 500 | 726 | 875 | 317 | 897 | 188 | 672 | 35 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 13 | 35 | 4 | 31 | 31 | 31 | 0 | 0 | 0 | 4 | 0 | 0 | 13 | 13 | 13 | 27 | 35 | 45 | 45 | 25 | 25 | 25 | 17 | 17 |
Best forecast wave conditions in Mornington Peninsula | ||||||||||||||||||||||||
Best forecast wave conditions in Australia | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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