Hanson Bay surfForecast / SA – Kangaroo Island / Australia

information circle12 Day Weather and Surf, issued 9 am Saturday 20 Dec 2025 ACDT
Forecast update in hr  min  s Forecast update imminent
Hanson Bay surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Hanson Bay sea temperature is
18.4° C
(Which is 1.6°C warmer than normal for this time of year)


Best Forecast Surf Conditions for Hanson Bay this week:

The surf forecast for Hanson 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 0.7m and 11s period. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Hanson Bay in the next 12 days are 3.5m 17s and forecast to arrive on Tuesday (Dec 23) at 1PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 4s period and expected on Sunday (Dec 21) at 4AM.

Wave TypeTime (ACDT) & Date Wave Height & Period
Next good surf (1 star+) 4AM (Sun 21st Dec)2.5ft (0.7m) 11s
Best Surf 4AM (Sat 27th Dec)7ft (2.1m) 16s
Most Powerful 1PM (Tue 23rd Dec)11ft (3.5m) 17s

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

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Heavy rain (total 25mm), heaviest during Sat night. Very mild (max 19°C on Sat afternoon, min 13°C on Sun night). Mainly fresh winds.

Days 3-6 Weather Summary Mostly dry. Very mild (max 16°C on Wed afternoon, min 13°C on Wed night). Wind will be generally light.

Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
Friday
26
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
1
0
0
1
0
1
2
2
0
5
5
4
2
2
3
1
1
1
2
2
2
Swell
Height Map
Wave Height (m) & direction (?)
1.2
SW
1
SW
0.9
SSW
1.3
W
2.2
SSW
1.4
W
2
WSW
1.6
WSW
2.4
SW
3.5
SW
4
SW
3.5
SW
3.5
SW
3
SW
3
SW
3
SSW
3
SSW
2.5
SSW
2.1
SW
1.9
SW
1.8
SW
Period(s) (?)99911613121113171616151413131312121216
Wave
Graph
(?)Metric surfscale
Energy kJ (?)2511591213883956331063631181761887786654444303673312228602679190612029611793
Wind
(km/h)
15
SSE
15
SE
15
E
25
WNW
30
SW
15
SW
20
WSW
25
W
20
SSW
15
SSW
20
SW
15
SW
20
SW
20
SSW
15
SSE
15
SE
20
SE
20
ESE
20
E
20
ESE
15
E
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
oncross-
on
crosscross-
off
cross-
on
cross-
on
crosscrosscross-
on
oncross-
on
cross-
on
cross-
on
cross-
on
oncross-
on
cross-
on
cross-
on
crosscrosscross
High Tide
/ height (m)
2:30PM
0.25
3:10AM
0.95
2:53PM
0.26
3:40AM
0.95
3:19PM
0.28
4:09AM
0.94
3:50PM
0.29
4:37AM
0.91
4:26PM
0.30
5:05AM
0.85
5:11PM
0.32
5:31AM
0.77
6:07PM
0.35
Low Tide
/ height (m)
7:28PM
0.06
10:43AM
0.14
8:02PM
0.04
11:06AM
0.14
8:35PM
0.03
11:31AM
0.14
9:07PM
0.04
11:58AM
0.14
9:40PM
0.08
12:26PM
0.15
10:13PM
0.14
12:53PM
0.16
10:49PM
0.23
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
Friday
26
Sunrise6:01--6:01--6:01--6:01--6:03--6:03--6:03--
Sunset-8:37--8:37--8:38--8:38--8:39--8:39--8:39-
part cloud
cloud
rain showers
rain showers
cloud
part cloud
part cloud
clear
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
Rain (mm)
--241-----------------
Temp. °C171915181514171715151514151614151515222119
Feels °C (?)1316141299131311121111111311111112181817
  • 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

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Information about the Hanson Bay Surf forecast

The above surf forecast table for Hanson Bay provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Hanson Bay can be found by selecting the local surf guide option on the grey menu. Our Hanson 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 (Hanson 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 Hanson 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 Hanson Bay, camping, hotels and holiday cottages in Kangaroo Island, consider staying in Kingscote which is 81 km (50 miles) away.

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