Bruny Island - Mabel Bay Surf Break

Lat Long: 43.49° S 147.16° E

Bruny Island - Mabel Bay 48 hour detailed Surf Forecast

Issued: 3 pm 20 Aug 2026 (local time)

Forecast update in  hr  min

Today's Bruny Island - Mabel Bay sea temperature is
13.1° C
1.6° 

Bruny Island - Mabel 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 Bruny Island - Mabel Bay today (20 Aug):

  • Afternoon surf: Afternoon surf (20 Aug, local time) - 1.5ft (0.5m), 16s period with SW swell.
  • Evening surf: Evening surf (20 Aug, local time) - 2.5ft (0.7m), 13s period with SW swell.

The current surf forecast for Bruny Island - Mabel Bay at 8PM is: 0.7m 13s primary swell from a Southwest direction and 0.4m 5s secondary swell from a West-southwest direction (forecast issued at 03:00pm August 20). An open ocean swell of 1.3m 6s is not directed at the surf break. The wind direction is predicted to be offshore.

Time (AEST) & DateWave HeightWave Period
Morning (20 Aug)--
Afternoon (20 Aug)1.5ft (0.5m)16s
Evening (20 Aug)2.5ft (0.7m)13s

Table - waves today at Bruny Island - Mabel Bay. (Swell directed towards the surf break)


Short Range Forecast

Moderate rain (total 17mm), heaviest on Fri night. Very mild (max 16°C on Thu afternoon, min 9°C on Fri night). Winds increasing (calm on Thu afternoon, near gales from the W by Fri night).

Thu
20
Friday
21
Saturday
22
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)
2
2
1
2
2
3
2
3
2
2
2
4
2
3
0
0
0
0
!
!
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)
0.5
SW
16
0.5
SW
16
0.7
SW
13
0.8
SW
13
0.7
SW
14
1
SW
16
1.1
SW
16
1.2
SW
15
1
SW
15
1.8
WSW
14
1
SW
18
1.7
SW
16
2.5
SW
15
3
SW
15
4
SW
13
5
SW
13
5
SW
14
5
SW
14
4.5
SW
14
4.5
SW
14
Wave Graph
Metric surfscale
Energy kJ
140
138
171
215
184
492
553
640
415
1351
600
1548
2704
3224
5198
8917
10522
9832
8741
7374
Wind (km/h)
15
NNW
10
NW
5
WNW
15
NNW
15
NNW
15
NNW
20
NNW
15
WNW
20
WNW
25
W
25
WNW
25
WNW
30
WNW
30
WNW
55
W
55
W
55
WSW
50
WSW
45
W
40
W
Wind State
cross-off
off
glassy
off
off
off
cross-off
cross-off
cross-off
cross-off
cross-off
off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
High Tide
12:40PM0.61m
1:00PM0.63m
1:28PM0.66m
Low Tide
9:30PM0.19m
9:52PM0.18m
part cloud
part cloud
clear
part cloud
part cloud
clear
cloud
cloud
cloud
light rain
clear
cloud
light rain
mod rain
rain showers
light rain
clear
clear
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:58
6:56
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:30
5:30
5:32
 mm
3
2
8
3
1
Temp °C
15
16
14
12
10
10
10
11
12
11
10
9
9
9
9
9
9
10
10
10
Feels °C
12
13
12
8
7
7
5
8
7
5
4
3
2
2
-4
-4
-3
-2
-1
0
  • 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 

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