Observation City Surf Forecast

/ WA – Perth City (29 breaks) / Western Australia (159 breaks) /

Australia (828 breaks) / Lat Long: (31.88° S 115.75° E)

Surf Forecasts:

Observation City surfForecast / WA – Perth City / Australia

12 Day Weather and Surf, issued 1 pm Thursday 18 Sep 2025 AWST

Forecast update in hr min s Forecast update imminent

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

Today's Observation City sea temperature is 18.2° C
(Which is normal for this time of year)

Best Forecast Surf Conditions for Observation City this week:

The surf forecast for Observation City over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Sep 19) at 8AM. The primary swell is predicted to be 2.5m and 14s period. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Observation City in the next 12 days are 2.5m 15s and forecast to arrive on Friday (Sep 19) at 11AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 3s period and expected on Monday (Sep 22) at 5AM.

Wave Type	Time (AWST) & Date	Wave Height & Period
Next good surf (1 star+)	8AM (Fri 19th Sep)	8ft (2.5m) 14s
Best Surf	8AM (Fri 19th Sep)	8ft (2.5m) 14s
Most Powerful	11AM (Fri 19th Sep)	8ft (2.5m) 15s

Table - best surf conditions forecast for Observation City over the next 12 days.

Updates in hr min s Forecast update imminent

12 Days Hourly

Print Table

	Short Range Forecast Some drizzle, heaviest during Thu night. Warm (max 20°C on Sun morning, min 13°C on Sat morning). Wind will be generally light.											Days 3-6 Weather Summary Mostly dry. Warm (max 26°C on Tue afternoon, min 14°C on Sun night). Wind will be generally light.
	Thu 18		Friday 19			Saturday 20			Sunday 21			Monday 22			Tuesday 23			Wednesday 24
	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM
Rating (10 max)	0	0	4	1	4	2	1	3	3	2	4	3	4	4	3	4	4	3	3	4	2
Swell Height Map See all maps
Wave Height (m) & direction (?)	WSW	WSW	WSW	WSW	WSW	WSW	WSW	WSW	WSW	WSW	WSW	WSW	WSW	WSW	WSW	WSW	WSW	WSW	WSW	WSW	WSW
Period(s) (?)	14	14	15	14	14	14	14	13	13	13	15	19	18	17	16	16	15	16	16	15	16
Wave Graph (?)
kJ (?)	2452	2522	2717	2680	2005	1318	1204	824	700	734	1139	1614	1483	2303	1761	1675	1712	2032	2143	2191	2080
Wind (km/h)	SW	SW	S	SSW	ESE	SSW	S	ESE	SE	S	E	ENE	ESE	E	NE	E	ENE	N	W	NE	NW
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	cross- on	cross- on	glass	cross- on	off	cross	cross	cross- off	cross- off	cross	off	cross- off	cross- off	off	cross- off	off	cross- off	cross	on	cross- off	cross- on
High Tide / height (m)			7:56AM 0.58		10:02PM 0.35	8:37AM 0.54		9:46PM 0.39	9:14AM 0.50		9:49PM 0.45	9:48AM 0.45		9:57PM 0.50	10:17AM 0.39		10:05PM 0.55	10:35AM 0.33		10:13PM 0.58	10:17AM 0.28
Low Tide / height (m)	3:55PM 0.09			4:04PM 0.15	1:39AM 0.32		3:58PM 0.19	2:46AM 0.28		3:39PM 0.23	3:33AM 0.25		3:24PM 0.25	4:16AM 0.22		3:19PM 0.25	4:58AM 0.21		3:18PM 0.25		5:40AM 0.21

	Thu 18		Friday 19			Saturday 20			Sunday 21			Monday 22			Tuesday 23			Wednesday 24
Sunrise	-	-	6:11	-	-	6:09	-	-	6:09	-	-	6:07	-	-	6:05	-	-	6:05	-	-	6:03
Sunset	6:09	-	-	6:09	-	-	6:10	-	-	6:12	-	-	6:12	-	-	6:13	-	-	6:13	-	-

Rain (mm)	-	1	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
Temp. °C	15	16	16	16	16	17	17	16	20	21	20	20	24	22	22	26	24	25	27	25	24
Feels °C (?)	9	12	16	13	14	16	13	15	19	19	18	17	22	20	18	24	21	21	24	22	21

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 Observation City (light winds from the NW at Woodlands wx 4 km from Observation City). 2.6m 13s groundswell from the WSW with a 2.4m 12s groundswell, also from the WSW. 2 swells combining so expect closeout sets.
1 hour 47 minutes ago Observation City

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1 h 47 min ago

10 km/h

Clean

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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Observation City surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.

Information about the Observation City Surf forecast

The above surf forecast table for Observation City provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Observation City can be found by selecting the local surf guide option on the grey menu. Our Observation City surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Observation City) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).

Further information to help with frequently asked questions about our surf forecast for Observation City may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.

Are you planning a holiday in Perth City Coast? If you are looking for accommodation near Observation City, camping, hotels and holiday cottages in Perth City Coast, consider staying in Perth which is 12 km (7 miles) away. Other places in and around Perth City Coast where you can find information about places to rent, and car hire include Fremantle which is 19 km (12 miles) away, Canning Vale, Gosnells and Kwinana.