Pennington Bay surfForecast / SA – Kangaroo Island / Australia

information circle12 Day Weather and Surf, issued 9 pm Saturday 20 Dec 2025 ACDT
Forecast update in hr  min  s Forecast update imminent
Pennington Bay surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Pennington Bay sea temperature is
19.2° C
(Which is 2.2°C warmer than normal for this time of year)


Best Forecast Surf Conditions for Pennington Bay this week:

The surf forecast for Pennington Bay over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Dec 21) at 4AM. The primary swell is predicted to be 0.8m and 8s period with a secondary swell of 0.2m and 15s. Another secondary swell of 1.0m and 5s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Pennington Bay in the next 12 days are 2.5m 17s and forecast to arrive on Tuesday (Dec 23) at 4PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 5s period and expected on Friday (Dec 26) at 7AM.

Wave TypeTime (ACDT) & Date Wave Height & Period
Next good surf (1 star+) 4AM (Sun 21st Dec)2.5ft (0.8m) 8s
Best Surf 1PM (Sat 27th Dec)3ft (0.9m) 16s
Most Powerful 4PM (Tue 23rd Dec)8ft (2.5m) 17s

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

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Moderate rain (total 12mm), heaviest on Sun morning. Very mild (max 19°C on Sun morning, min 14°C on Sun night). Mainly fresh winds.

Days 3-6 Weather Summary Mostly dry. Very mild (max 18°C on Fri afternoon, min 13°C on Thu night). Mainly fresh winds.

Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
Friday
26
Sat
27
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
0
0
0
0
0
0
0
1
0
2
1
0
0
0
0
0
1
1
1
2
1
Swell
Height Map
Wave Height (m) & direction (?)
0.8
S
1.2
SSE
1.5
S
1.4
S
1.4
SSW
0.7
S
1.5
SSW
1.7
S
2.5
S
2.4
S
2.1
S
1.9
S
2
S
2
S
2.4
SSW
1.5
S
1.7
S
1.5
S
0.8
S
0.9
SSW
0.8
SSW
Period(s) (?)8677713131617161514141313131212171616
Wave
Graph
(?)Metric surfscale
Energy kJ (?)828419618119517176714043593290019331504150913871808700841647373421329
Wind
(km/h)
30
E
35
WNW
35
SSW
20
SSW
15
WSW
20
SW
25
SSW
20
S
20
S
15
SSW
20
SSW
25
SSW
25
SSE
25
SSE
30
SSE
25
SE
25
E
20
SE
20
ESE
10
NE
15
E
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off
crossononcross-
on
cross-
on
ononononononcross-
on
cross-
on
cross-
on
crosscross-
off
crosscrosscross-
off
cross-
off
High Tide
/ height (m)
5:16AM
1.44
6:33PM
0.75
5:49AM
1.47
7:01PM
0.78
6:22AM
1.47
7:28PM
0.82
6:56AM
1.45
7:56PM
0.86
7:32AM
1.39
8:26PM
0.91
8:09AM
1.28
8:59PM
0.96
8:47AM
1.14
Low Tide
/ height (m)
12:32PM
0.17
10:59PM
0.49
1:00PM
0.17
11:34PM
0.48
1:28PM
0.20
12:10AM
0.48
1:56PM
0.25
12:49AM
0.49
2:23PM
0.31
1:32AM
0.51
2:48PM
0.39
2:20AM
0.54
3:11PM
0.46
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
Friday
26
Sat
27
Sunrise-5:58--5:58--5:58--6:00--6:00--6:01--6:01-
Sunset--8:34--8:35--8:35--8:36--8:36--8:36--8:37
light rain
rain showers
part cloud
part cloud
clear
part cloud
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
Rain (mm)
111-------------------
Temp. °C161917141819161616141716151514131618172426
Feels °C (?)151311815151212111012111110871014142121
  • Map Icons:
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  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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Information about the Pennington Bay Surf forecast

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

Are you planning a holiday in Kangaroo Island? If you are looking for accommodation near Pennington Bay, camping, hotels and holiday cottages in Kangaroo Island, consider staying in Kingscote which is 25 km (16 miles) away. Alternatively, find information about places to stay and car hire in Rapid Bay which is 54 km (34 miles) away

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