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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 9 pm Wednesday 20 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 1.1°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 1AM is: 1.6m 10s primary swell from a Southwest direction and 0.8m 16s secondary swell from a Southwest direction (forecast issued at 09:00pm May 20). The wind direction is predicted to be onshore.
| Time (AEST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 May) | 5.5ft (1.7m) | 14s |
| Afternoon (21 May) | 6ft (1.8m) | 14s |
| Evening (21 May) | 5.5ft (1.7m) | 13s |
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 16°C on Sat afternoon, min 10°C on Thu night). Wind will be generally light. | ||||||||||||||||||||||||
Wed 20 | Thursday 21 | Friday 22 | Saturday 23 | |||||||||||||||||||||
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 | 1 PM | 4 PM | |
Swell Height Map |   |    |    |    | ||||||||||||||||||||
SW 10 | SW 10 | SW 10 | SW 16 | SW 12 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SW 12 | SW 12 | SW 12 | SW 12 | SW 13 | SW 13 | SW 15 | SW 16 | SW 15 | SW 15 | SW 14 | SW 14 | SW 14 | SW 13 | |
626 | 588 | 513 | 474 | 528 | 1187 | 1155 | 1318 | 1135 | 969 | 730 | 584 | 465 | 481 | 591 | 767 | 1437 | 1764 | 1753 | 1526 | 1290 | 1179 | 862 | 778 | |
Wind (km/h) | ||||||||||||||||||||||||
on | on | on | cross-on | cross-on | cross-on | on | cross-on | cross | cross | glassy | cross-off | off | off | cross-off | cross-off | cross-off | off | off | off | cross-off | cross-off | cross-off | cross-off | |
High Tide | 2:00AM1.44m | 3:25PM1.68m | 2:54AM1.44m | 4:10PM1.64m | 3:50AM1.41m | |||||||||||||||||||
Low Tide | 8:39PM0.67m | 8:35AM0.10m | 9:27PM0.63m | 9:25AM0.15m | 10:14PM0.60m | 10:14AM0.23m | ||||||||||||||||||
 | |  | | |  |  | | | | | | | | | | |  | | | |  | | | |
 | — | — | — | — | 7:18 | — | — | — | — | — | — | — | 7:20 | — | — | — | — | — | — | — | 7:20 | — | — | — |
 | — | — | — | — | — | — | — | 5:15 | — | — | — | — | — | — | — | 5:14 | — | — | — | — | — | — | — | 5:13 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 14 | 14 | 12 | 12 | 12 | 12 | 13 | 13 | 13 | 12 | 12 | 11 | 10 | 10 | 11 | 13 | 14 | 13 | 13 | 13 | 13 | 13 | 15 | 16 |
9 | 10 | 10 | 9 | 10 | 10 | 11 | 11 | 11 | 11 | 11 | 10 | 8 | 7 | 9 | 11 | 11 | 11 | 10 | 10 | 8 | 8 | 10 | 11 | |
Swell 1 Height (m) Direction Period (s) | SW 16 | SW 10 | SW 10 | SW 10 | SW 12 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SW 12 | SW 12 | SW 12 | SW 12 | SW 13 | SW 13 | SW 15 | SW 16 | SW 15 | SW 15 | SW 14 | SW 14 | SW 14 | SW 13 |
 kJ | 361 | 588 | 513 | 348 | 528 | 1187 | 1155 | 1318 | 1135 | 969 | 730 | 584 | 465 | 481 | 591 | 767 | 1437 | 1764 | 1753 | 1526 | 1290 | 1179 | 862 | 778 |
Swell 2 Height (m) Direction Period (s) | SE 11 | SW 16 | SW 16 | SW 16 | SW 15 | SE 11 | SSW 14 | SSW 14 | ESE 11 | SE 11 | SE 11 | SE 11 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SSW 16 | S 16 | S 15 | S 16 | SSW 15 | SSW 14 | SSW 14 |
| kJ | 5 | 361 | 357 | 474 | 395 | 5 | 41 | 68 | 12 | 5 | 5 | 4 | 4 | 4 | 4 | 4 | 4 | 87 | 124 | 115 | 124 | 74 | 40 | 39 |
Swell 3 Height (m) Direction Period (s) | ESE 11 | SE 11 | SE 11 | S 5 | SE 11 | ESE 11 | ESE 11 | ESE 11 | — | — | — | — | S 16 | — | S 13 | ESE 10 | ESE 10 | SE 10 | S 20 | — | — | — | SE 9 | ESE 9 |
| kJ | 11 | 5 | 5 | 21 | 5 | 12 | 12 | 12 | — | — | — | — | 5 | — | 4 | 10 | 10 | 4 | 8 | — | — | — | 3 | 8 |
Wind waves Height (m) Direction Period (s) | SW 10 | S 6 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | ESE 3 | E 10 | E 4 | — | — | — | N 3 | NNE 3 |
| kJ | 626 | 33 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 3 | 17 | 7 | — | — | — | 6 | 4 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 27 | 25 | 17 | 17 | 17 | 17 | 27 | 35 | 4 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 7 | 7 | 7 | 7 |
Best forecast wave conditions in Mornington Peninsula | ||||||||||||||||||||||||
Best forecast wave conditions in Australia | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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