Cat Bay (Shelly Beach) Surf Break

Lat Long: 38.51° S 145.13° E

Cat Bay (Shelly Beach) 48 hour detailed Surf Forecast

Issued: 3 am 04 Aug 2026 (local time)

Forecast update in  hr  min

Today's Cat Bay (Shelly Beach) sea temperature is
13.3° C
0.5° 

Cat Bay (Shelly Beach) surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


How big are the waves at Cat Bay (Shelly Beach) today (04 Aug):

  • Morning surf: Morning surf (04 Aug, local time) - 5.5ft (1.7m), 11s period with WSW swell.
  • Afternoon surf: Afternoon surf (04 Aug, local time) - 6.5ft (2.0m), 12s period with WSW swell.
  • Evening surf: Evening surf (04 Aug, local time) - 6ft (1.9m), 10s period with SW swell.

The current surf forecast for Cat Bay (Shelly Beach) at 7AM is: 1.7m 11s primary swell from a West-southwest direction and 1.2m 13s secondary swell from a Southwest direction, 0.7m 4s secondary swell from a Northwest direction (forecast issued at 03:00am August 04). The wind direction is predicted to be cross-onshore.

Time (AEST) & DateWave HeightWave Period
Morning (04 Aug)5.5ft (1.7m)11s
Afternoon (04 Aug)6.5ft (2.0m)12s
Evening (04 Aug)6ft (1.9m)10s

Table - waves today at Cat Bay (Shelly Beach). (Swell directed towards the surf break)


Short Range Forecast

Heavy rain (total 21mm), heaviest during Tue afternoon. Very mild (max 13°C on Tue afternoon, min 9°C on Tue morning). Mainly fresh winds.

Tuesday
4
Wednesday
5
Thursday
6
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
1 AM
4 AM
7 AM
10 AM
1 PM
4 PM
7 PM
10 PM
Rating
(10 max)
0
0
0
0
0
0
2
1
1
0
0
1
1
1
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
2.1
WSW
13
2.2
WSW
13
1.7
WSW
11
1.6
SW
11
2
WSW
12
2.2
SW
12
2.1
SW
11
1.9
SW
10
1.8
SW
10
1.6
SW
10
0.6
SW
20
1.4
SW
10
0.7
SW
14
0.6
SW
19
1.5
SW
14
1.1
SW
13
0.9
SW
13
1.2
SW
12
1.1
SW
12
1
SW
12
0.6
SW
16
0.9
SW
16
0.9
SW
16
1.2
SW
17
Wave Graph
Metric surfscale
Energy kJ
1471
1548
634
572
1082
1301
972
745
626
469
275
432
206
284
801
392
286
444
379
287
203
406
416
844
Wind (km/h)
35
WNW
30
WNW
35
NW
40
NW
35
WNW
30
WSW
25
SW
25
SW
25
SW
25
WSW
30
WSW
25
SW
20
SW
25
SW
30
WSW
25
W
20
WNW
20
NNW
25
NW
25
NNW
30
NNW
30
WNW
25
WNW
25
W
Wind State
cross-on
cross-on
cross-on
cross-on
cross-on
cross
cross-off
cross-off
cross-off
cross
cross
cross-off
cross-off
cross-off
cross
cross
cross-on
on
on
on
on
cross-on
cross-on
cross-on
High Tide
3:24AM2.10m
3:38PM2.33m
4:07AM2.18m
4:09PM2.33m
4:50AM2.23m
4:43PM2.32m
Low Tide
9:24AM0.52m
9:57PM0.40m
10:03AM0.58m
10:32PM0.29m
10:44AM0.65m
thunderstorm
rain showers
cloud
light rain
light rain
rain showers
rain showers
rain showers
rain showers
rain showers
rain showers
rain showers
rain showers
rain showers
rain showers
rain showers
clear
cloud
cloud
cloud
cloud
light rain
light rain
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:18
7:18
7:16
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:31
5:32
5:34
 mm
3
1
1
1
2
1
1
1
1
2
2
1
1
1
1
1
1
1
Temp °C
10
9
9
9
11
12
13
12
12
12
12
12
12
12
12
12
11
9
9
9
10
12
12
12
Feels °C
3
2
2
1
4
5
8
6
7
6
5
7
7
7
6
6
7
4
3
3
3
6
7
6
  • 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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