Portsea Back Beach Surf Forecast

/ VIC – Mornington Peninsula (24 breaks) / Victoria (127 breaks) /

Australia (828 breaks) / Lat Long: (38.33° S 144.69° E)

Surf Forecasts:

Portsea Back Beach surfForecast / VIC – Mornington Peninsula / Australia

48hr Weather and Surf, issued 9 am Friday 19 Sep 2025 AEST

Forecast 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 13.5° C
(Which is slightly warmer than usual)

How big are the waves at Portsea Back Beach today?

The current surf forecast for Portsea Back Beach at 12PM is: 1.3m 12s primary swell from a West-southwest direction and 0.2m 9s secondary swell from a South direction (forecast issued at 09:00am September 19). An open ocean swell of 1.1m 4s is not directed at the surf break. The wind direction is predicted to be cross-offshore.

Time (AEST) & Date	Wave Height	Wave Period
Morning (19 Sep)	4.5ft (1.3m)	12s
Afternoon (19 Sep)	4ft (1.2m)	12s
Evening (19 Sep)	8ft (2.5m)	11s

Table - waves today at Portsea Back Beach. (Swell directed towards the surf break)

Updates in hr min s Forecast update imminent

12 Days Hourly

Print Table

	Friday 19						Saturday 20								Sunday 21								Mon 22
	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	1 AM	4 AM
Rating (10 max)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0	0	0	0	0	0	0
Swell Height Map See all maps
Wave Height (m) & direction (?)	WSW	WSW	WSW	SW	SW	WSW	WSW	SW	SW	SW	WSW	WSW	WSW	SW	SW	SW	SW	SW	SW	WSW	WSW	WSW	WSW	SW
Period(s) (?)	12	12	12	12	12	11	11	13	14	14	14	13	13	13	13	12	12	12	12	12	12	12	12	13
Wave Graph (?)
kJ (?)	449	456	488	442	341	1689	1967	4790	6841	6834	6720	5478	4554	2740	2326	2306	2077	1860	1682	2664	3060	2875	2571	2356
Wind (km/h)	N	N	NNW	WNW	WNW	W	WNW	W	W	W	W	W	WNW	WNW	WNW	WNW	WNW	WNW	WNW	W	W	W	WNW	W
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	cross- off	cross- off	cross- off	cross- on	cross- on	cross- on	cross- on	cross- on	cross- on	cross- on	cross- on	cross- on	cross- on	cross	cross	cross	cross	cross	cross	cross- on	cross- on	cross- on	cross- on	cross- on
High Tide / height (m)		9:03AM 1.21				8:42PM 1.14					10:19AM 1.20				10:15PM 1.15				11:23AM 1.23				11:36PM 1.22
Low Tide / height (m)				2:56PM 0.74				3:26AM 0.43					4:27PM 0.66				4:50AM 0.45				5:37PM 0.55

	Friday 19						Saturday 20								Sunday 21								Mon 22
Sunrise	6:16	-	-	-	-	-	-	-	6:15	-	-	-	-	-	-	-	6:13	-	-	-	-	-	-	-
Sunset	-	-	-	6:14	-	-	-	-	-	-	-	6:15	-	-	-	-	-	-	-	6:15	-	-	-	-

Rain (mm)	-	-	-	-	-	1	-	1	1	1	-	-	-	-	-	-	-	-	-	1	-	-	-	-
Temp. °C	13	16	18	19	15	8	7	8	7	10	11	12	11	11	12	12	12	13	15	13	12	11	10	9
Feels °C (?)	3	7	10	13	7	0	0	-1	-1	2	4	4	4	3	4	5	5	5	7	6	6	6	4	3

Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)

Recent Eyeball Surf Reports for VIC - Mornington Peninsula

Wind Update The wind is still cross-off at Portsea Back Beach (moderate winds from the NNW at Point Wilson 29 km from Portsea Back Beach). 1.0m 11s groundswell from the WSW with a 0.2m 9s swell from the S. 2 swells combining to make bigger set waves.
1 hour 8 minutes ago Portsea Back Beach

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29 km away, 1 h 8 min ago

26 km/h

NNW

0.0

13.5

Air / Water (°C)

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