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Marion Bay surfForecast / TAS – East Coast / Australia

information circle12 Day Weather and Surf, issued 3 am Thursday 07 Aug 2025 AEST
Forecast update in hr  min  s Forecast update imminent
Marion Bay surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Marion Bay sea temperature is
12.5° C
 (Which is slightly warmer than usual)

Best Forecast Surf Conditions for Marion Bay this week:

The surf forecast for Marion Bay over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Aug 07) at 10AM. The primary swell is predicted to be 1.2m and 12s period with a secondary swell of 0.5m and 17s. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Marion Bay in the next 12 days are 1.2m 12s and forecast to arrive on Thursday (Aug 07) at 10AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 8s period and expected on Friday (Aug 08) at 1AM.

Wave TypeTime (AEST) & Date Wave Height & Period
Next good surf (1 star+)10AM (Thu 7th Aug)4ft (1.2m) 12s
Best Surf10AM (Thu 7th Aug)4ft (1.2m) 12s
Most Powerful10AM (Thu 7th Aug)4ft (1.2m) 12s

Table - best surf conditions forecast for Marion Bay over the next 12 days.

Hourly12 Days
East Coast of Tasmania Surf
Print Surf Table
Updates in  hr  min  s Forecast update imminent 

Short Range Forecast Mostly dry. Very mild (max 14°C on Thu morning, min 10°C on Thu night). Wind will be generally light.

Days 3-6 Weather Summary Some drizzle, heaviest during Tue afternoon. Very mild (max 14°C on Tue afternoon, min 7°C on Mon night). Wind will be generally light.

Thursday
07
Friday
08
Saturday
09
Sunday
10
Monday
11
Tuesday
12
Wednesday
13
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
3
2
3
3
1
2
2
1
0
0
0
0
0
0
1
1
1
1
0
0
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
1.2
ENE
1.1
ENE
0.9
SSE
0.9
SSE
0.8
SSE
0.7
S
0.8
SSE
0.6
E
0.5
SSE
0.5
S
0.4
S
0.3
S
0.3
S
1
NE
0.9
NE
0.9
ENE
1.2
NE
0.6
E
0.5
E
0.4
ENE
0.3
ENE
Period(s) (?)1212161615151611101015171655666668
Wave
Graph
(?)Metric surfscale
Energy (?)6276256556014913954092171501301401109486888217952372528
Wind
(km/h)
20
W
20
W
10
WSW
10
WSW
10
SSW
5
S
5
ESE
10
NE
10
NNE
10
NNE
20
NE
15
NNE
20
NNE
25
NNE
15
N
15
N
15
NNW
10
WNW
5
W
0
ENE
10
NW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
offcross-
off		cross-
off		cross-
off		crossglassglasscross-
on		crosscrosscrosscrosscrosscrosscross-
off		cross-
off		cross-
off		offcross-
off		glasscross-
off
High Tide
/ height (m)
6:04PM
1.10
7:52AM
0.71
6:51PM
1.13
8:35AM
0.73
7:38PM
1.14
9:17AM
0.77
8:28PM
1.13
9:58AM
0.82
9:19PM
1.10
10:39AM
0.87
10:15PM
1.03
11:20AM
0.92
11:16PM
0.96
Low Tide
/ height (m)
11:27AM
0.52
1:29AM
0.15
12:18PM
0.51
2:12AM
0.11
1:12PM
0.49
2:54AM
0.10
2:08PM
0.47
3:35AM
0.10
3:06PM
0.44
4:15AM
0.13
4:09PM
0.41
4:56AM
0.18
5:14PM
0.36
Thursday
07
Friday
08
Saturday
09
Sunday
10
Monday
11
Tuesday
12
Wednesday
13
Sunrise7:13--7:11--7:11--7:09--7:07--7:07--7:05--
Sunset-5:15--5:15--5:16--5:17--5:19--5:20--5:21-
clearcloudpart cloudpart cloudpart cloudcloudpart cloudcloudcloudpart cloudclearpart cloudpart cloudclearpart cloudcloudlight raincloudpart cloudpart cloudclear
Rain (mm)
----------------1----
Temp. °C14121111101011111112121113121012141012129
Feels °C (?)979878888877766710710106
  • 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

Eyeball surf reportRecent Eyeball Surf Reports for TAS - East Coast

  1. weather stationWind Update Offshore wind reported 14 km from Marion Bay (moderate winds from the SW at Dunalley (Stroud Point) 14 km from Marion Bay). 1.3m 12s groundswell from the ENE with a 0.8m 7s swell from the S and a 0.4m 16s long period groundswell from the SSE. 3 swells combining so expect closeout sets.

    1 hour 16 minutes ago Marion Bay
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1 h 16 min ago

20 km/h
SW
Cross-Off
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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.

View detailed surf forecast for Marion Bay at:
surf-forecast.com

Information about the Marion Bay Surf forecast

The above surf forecast table for Marion Bay provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Marion Bay can be found by selecting the local surf guide option on the grey menu. Our Marion Bay 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 (Marion Bay) 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 Marion Bay 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.

Marion Bay is 39 km (24 miles) from Port Arthur. If you plan a holiday in East Coast of Tasmania, look for hotels and other accommodation in Port Arthur. Port Arthur has rooms for a wide range of budgets as well as car hire and transport links.

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