Marion Bay Surf Break

Lat Long: 42.80° S 147.87° E

Marion Bay 48 hour detailed Surf Forecast

Issued: 3 pm 18 Aug 2026 (local time)

Forecast update in  hr  min

Today's Marion Bay sea temperature is
12.3° C
0.4° 

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


How big are the waves at Marion Bay today (18 Aug):

  • Afternoon surf: Afternoon surf (18 Aug, local time) - 3.5ft (1.1m), 5s period with NE swell.
  • Evening surf: Evening surf (18 Aug, local time) - 3.5ft (1.1m), 6s period with NE swell.

The current surf forecast for Marion Bay at 9PM is: 1.1m 6s primary swell from a Northeast direction and 0.3m 16s secondary swell from a South direction, 0.1m 13s secondary swell from a East direction (forecast issued at 03:00pm August 18). The wind direction is predicted to be cross-shore.

Time (AEST) & DateWave HeightWave Period
Morning (18 Aug)--
Afternoon (18 Aug)3.5ft (1.1m)5s
Evening (18 Aug)3.5ft (1.1m)6s

Table - waves today at Marion Bay. (Swell directed towards the surf break)


Short Range Forecast

Mostly dry. Very mild (max 16°C on Thu morning, min 8°C on Thu night). Wind will be generally light.

Tue
18
Wednesday
19
Thursday
20
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
Rating
(10 max)
0
0
0
0
2
2
2
2
0
0
!
0
!
2
3
0
1
1
1
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.3
S
16
1.2
NE
5
1.1
NE
6
1
NE
6
1.4
NNE
6
1.6
NE
7
1.5
NE
7
1.7
NNE
7
1.3
NE
7
1.5
NE
7
2.3
NNE
8
1.4
NE
8
2.1
NNE
8
1.8
NNE
8
1.8
NNE
8
1.1
NE
8
1.1
NE
8
1
NE
8
0.8
NE
8
0.7
NE
8
Wave Graph
Metric surfscale
Energy kJ
45
74
76
60
141
214
204
266
174
231
575
227
506
423
444
169
145
120
84
58
Wind (km/h)
25
NNE
25
NNE
20
NNE
15
NNE
15
N
10
N
10
N
15
N
20
NNE
20
NNE
15
NNE
25
NNE
20
NNW
20
NNW
15
N
20
NW
20
W
15
W
15
WNW
15
WNW
Wind State
cross
cross
cross
cross
cross-off
cross-off
cross-off
cross-off
cross
cross
cross-off
cross
cross-off
cross-off
cross-off
cross-off
off
off
off
off
High Tide
1:01AM0.74m
1:06PM0.97m
2:04AM0.69m
1:49PM0.97m
Low Tide
7:07PM0.35m
6:30AM0.43m
8:07PM0.34m
7:06AM0.47m
9:04PM0.33m
part cloud
cloud
part cloud
part cloud
part cloud
part cloud
clear
cloud
part cloud
cloud
cloud
cloud
cloud
part cloud
cloud
cloud
cloud
clear
cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:56
6:54
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:25
5:28
5:29
 mm
Temp °C
14
13
12
12
11
11
11
13
15
15
15
14
13
13
11
15
16
15
12
11
Feels °C
9
9
9
9
8
9
9
10
11
11
12
9
9
9
8
11
11
11
8
7
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder
How to use the Wavefinder 

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Marion Bay 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.


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