Guilderton Rivermouth Surf Forecast

/ WA – Perth City (29 breaks) / New South Wales (297 breaks) /

Australia (828 breaks)

Surf Forecasts

Guilderton Rivermouth surfForecast / WA – Perth City / Australia

48hr Weather and Surf, issued 7 pm Sunday 17 Aug 2025 AWST

Forecast update in hr min s Forecast update imminent

Guilderton Rivermouth surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.

Today's Guilderton Rivermouth sea temperature is 18.6° C
(Which is normal for this time of year)

How big are the waves at Guilderton Rivermouth today?

The current surf forecast for Guilderton Rivermouth at 10PM is: 1.7m 12s primary swell from a West-southwest direction and 0.7m 16s secondary swell from a Southwest direction (forecast issued at 07:00pm August 17). An open ocean swell of 0.4m 3s is not directed at the surf break. The wind direction is predicted to be cross-offshore.

Time (AWST) & Date	Wave Height	Wave Period
Morning (17 Aug)	-	-
Afternoon (17 Aug)	5.5ft (1.7m)	12s
Evening (17 Aug)	5.5ft (1.7m)	12s

Table - waves today at Guilderton Rivermouth. (Swell directed towards the surf break)

Hourly 12 Days

Perth City Coast Surf

Print Surf Table

Updates in hr min s Forecast update imminent

	Sunday 17			Monday 18								Tuesday 19								Wednesday 20
	5 PM	8 PM	11 PM	2 AM	5 AM	8 AM	11 AM	2 PM	5 PM	8 PM	11 PM	2 AM	5 AM	8 AM	11 AM	2 PM	5 PM	8 PM	11 PM	2 AM	5 AM	8 AM	11 AM	2 PM
Rating (10 max)	3	2	2	3	2	4	1	1	1	2	0	2	0	0	0	0	0	1	1	1	0	0	0	0
Swell Height Map See all maps
Wave Height (m) & direction (?)	WSW	WSW	WSW	WSW	WSW	WSW	WSW	SW	SW	SW	SW	WSW	SW	WSW	WSW	WSW	WSW	WSW	WSW	WSW	WSW	WSW	WSW	WSW
Period(s) (?)	12	12	12	13	12	15	14	19	18	17	16	16	16	16	16	15	15	15	14	14	14	16	16	16
Wave Graph (?)
Energy (?)	889	929	1145	1307	1311	1855	2127	2753	2487	3161	2463	2063	1637	1446	1663	1704	2240	2022	2063	2214	5484	3905	10146	11577
Wind (km/h)	ENE	ENE	NE	NNE	NNE	NNE	NNW	NW	NW	NNW	NNW	NNW	NW	WNW	W	WNW	WNW	WNW	NW	NW	WNW	WNW	WNW	W
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	off	cross- off	cross- off	cross- off	cross- off	cross- off	cross- on	cross- on	cross- on	cross	cross- on	cross	cross- on	cross- on	on	on	on	cross- on	cross- on	cross- on	cross- on	on	on	on
High Tide / height (m)					4:27AM 0.66									5:53AM 0.68								7:04AM 0.69
Low Tide / height (m)	3:21PM 0.04								3:48PM 0.01								4:19PM -0.01

	Sunday 17			Monday 18								Tuesday 19								Wednesday 20
Sunrise	-	-	-	-	-	6:50	-	-	-	-	-	-	-	6:50	-	-	-	-	-	-	-	6:48	-	-
Sunset	5:52	-	-	-	-	-	-	-	5:52	-	-	-	-	-	-	-	5:52	-	-	-	-	-	-	-

Rain (mm)	-	-	-	-	-	-	-	-	-	-	-	-	-	2	5	3	2	2	2	1	2	3	2	-
Temp. °C	18	19	19	17	16	16	19	19	19	18	17	17	18	18	17	16	18	16	16	16	17	17	17	18
Feels °C (?)	14	14	14	14	12	13	16	16	17	15	14	14	15	13	11	10	14	13	13	13	12	11	10	11

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 WA - Perth City

Wind Update Continuing clean conditions at Guilderton Rivermouth (light winds from the E at Gingin Aerodrome 36 km from Guilderton Rivermouth). 1.8m 12s groundswell from the WSW with a 0.4m 18s long period groundswell, also from the WSW. 2 swells combining so expect closeout sets.
38 minutes ago Guilderton Rivermouth

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36 km away, 38 min ago

9 km/h

0.0

18.6

Air / Water (°C)

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