Surf Forecasts:
How big are the waves at Portsea Back Beach today (17 Aug):
- Morning surf: Morning surf (17 Aug, local time) - 5ft (1.6m), 14s period with SW swell.
- Afternoon surf: Afternoon surf (17 Aug, local time) - 5.5ft (1.7m), 16s period with SW swell.
- Evening surf: Evening surf (17 Aug, local time) - 5.5ft (1.7m), 16s period with SW swell.
The current surf forecast for Portsea Back Beach at 8AM is: 1.6m 14s primary swell from a Southwest direction and 0.4m 11s secondary swell from a South-southwest direction (forecast issued at 03:00am August 17). An open ocean swell of 0.6m 5s is not directed at the surf break. The wind direction is predicted to be offshore and the swell rating is 3.
| Time (AEST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 Aug) | 5ft (1.6m) | 14s |
| Afternoon (17 Aug) | 5.5ft (1.7m) | 16s |
| Evening (17 Aug) | 5.5ft (1.7m) | 16s |
Table - waves today at Portsea Back Beach. (Swell directed towards the surf break)
Short Range ForecastModerate rain (total 10mm), heaviest on Wed morning. Very mild (max 18°C on Tue afternoon, min 10°C on Mon morning). Winds increasing (light winds from the E on Mon morning, strong winds from the NNE by Wed morning). | ||||||||||||||||||||||||
Monday 17 | Tuesday 18 | Wednesday 19 | ||||||||||||||||||||||
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 | 7 PM | 10 PM | |
Swell Height Map |  |  |  |  |  |  |  |  |  | |||||||||||||||
Wave Height (m) Direction Period (s) | SW 14 | SW 14 | SW 14 | SW 14 | SW 16 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 15 | SW 14 | SW 14 | SW 14 | SW 16 | SW 16 | SW 16 | SW 15 | SW 14 | SW 15 | SW 15 | SW 15 | SW 15 | SW 15 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 990 | 885 | 872 | 885 | 1303 | 1474 | 1438 | 1402 | 1246 | 1020 | 844 | 667 | 507 | 621 | 344 | 620 | 471 | 360 | 305 | 255 | 262 | 239 | 226 | 217 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | off | cross-off | cross | cross-off | cross-off | cross-off | off | off | off | off | cross-off | off | off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross |
High Tide | 2:47AM1.48m | 3:05PM1.53m | 3:35AM1.50m | 3:39PM1.53m | 4:18AM1.48m | 4:10PM1.50m | ||||||||||||||||||
Low Tide | 8:55AM0.30m | 9:21PM0.24m | 9:35AM0.38m | 9:59PM0.21m | 10:12AM0.47m | |||||||||||||||||||
 | | |  | | | | | | | |  | |  | |  | |  |  |  | | | | | |
 | — | — | 7:05 | — | — | — | — | — | — | — | 7:03 | — | — | — | — | — | — | — | 7:01 | — | — | — | — | — |
 | — | — | — | — | — | 5:45 | — | — | — | — | — | — | — | 5:45 | — | — | — | — | — | — | — | 5:46 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | 1 | 3 | 1 | 3 | 1 |
Temp °C | 11 | 10 | 10 | 10 | 13 | 14 | 16 | 14 | 12 | 13 | 13 | 13 | 16 | 18 | 16 | 15 | 14 | 14 | 13 | 12 | 12 | 13 | 13 | 14 |
Feels °C | 8 | 7 | 7 | 7 | 11 | 11 | 12 | 9 | 8 | 10 | 9 | 8 | 11 | 14 | 12 | 11 | 9 | 8 | 6 | 3 | 3 | 4 | 8 | 10 |
Swell 1 Height (m) Direction Period (s) | SW 14 | SW 14 | SW 14 | SW 14 | SW 16 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 15 | SW 14 | SW 14 | SW 14 | SW 16 | SW 16 | SW 16 | SW 15 | SW 14 | SW 15 | SW 15 | SW 15 | SW 15 | SW 15 |
| kJ | 990 | 885 | 872 | 885 | 1303 | 1474 | 1438 | 1402 | 1246 | 1020 | 844 | 667 | 507 | 621 | 344 | 620 | 471 | 360 | 305 | 255 | 262 | 239 | 226 | 217 |
Swell 2 Height (m) Direction Period (s) | — | — | SSW 11 | SE 5 | SE 5 | SSW 17 | SSW 16 | SSW 16 | SSW 15 | ESE 5 | SW 18 | SW 18 | SW 17 | N 3 | WSW 13 | SE 4 | SE 4 | SE 4 | ESE 4 | SE 7 | SE 7 | SE 7 | SE 7 | WSW 20 |
| kJ | — | — | 49 | 10 | 7 | 57 | 52 | 53 | 44 | 23 | 266 | 307 | 350 | 2 | 219 | 2 | 4 | 3 | 2 | 2 | 2 | 2 | 2 | 40 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | SSW 11 | SSW 11 | — | — | — | — | ESE 5 | SE 5 | SE 5 | SSW 17 | SSW 16 | E 4 | SSW 15 | S 16 | — | SW 14 | — | S 16 | S 16 | ESE 7 |
| kJ | — | — | — | — | 23 | 25 | — | — | — | — | 18 | 14 | 7 | 27 | 25 | 8 | 23 | 19 | — | 8 | — | 5 | 5 | 4 |
Wind waves Height (m) Direction Period (s) | SE 4 | ESE 4 | ESE 5 | ESE 5 | ESE 5 | SE 4 | ESE 4 | ESE 5 | ESE 5 | ESE 5 | — | NE 3 | NNE 3 | E 5 | E 3 | E 4 | NNE 3 | NNE 3 | NNE 4 | NNE 5 | NNE 5 | NNE 5 | N 5 | N 4 |
| kJ | 9 | 13 | 14 | 22 | 17 | 5 | 12 | 31 | 34 | 43 | — | 2 | 3 | 8 | 1 | 5 | 3 | 9 | 30 | 63 | 80 | 87 | 70 | 33 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 4 | 4 | 4 | 4 | 0 | 0 | 0 | 0 | 7 | 0 | 0 | 0 | 44 | 48 | 63 | 63 | 44 | 7 | 13 |
Best forecast wave conditions in Mornington Peninsula | ||||||||||||||||||||||||
Best forecast wave conditions in Australia | ||||||||||||||||||||||||
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