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Coldest sea in Australia in October

954 coastal locations in Australia ranked by typical October sea temperature, coldest first. Region-wide average in October: 21.9°C.

Coldest in October

Heard Island

1.8°C October mean in Australia

Regional October average

21.9°C

across all 954 coastal locations in Australia

Vs annual mean

-1.0°C

below the year-round regional average

What the Australia sea feels like in October

Water at this temperature is very pleasant to swim in. If you tend to wear a wetsuit when swimming, you might consider removing it now to avoid the body overheating.

Australia monthly average 20.0°C to 25.5°C
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  • Warmest month February 25.5°C
  • Coldest month August 20.0°C
  • Annual mean 22.9°C
  • Months above 20°C 12 of 12

Where October fits in the year

October sits inside the regional pattern shown on the left. Pick a different month to see how the ranking shifts.

All twelve Australia month rankings:

Australia sea temperature map (live)

The map shows today's latest reading at every Australia location. The list below is based on the typical October mean.

Zoom in to see individual locations. Click a pin for water temperatures. View list →
°C -2 0 1 3 5 7 9 11 13 15 17 19 21 24 27 30 35

Top 50 coldest Australia locations in October

Sorted by typical October mean from a decade of daily readings, coldest first. Click any place for the full location page.

# Location October mean
1 Heard Island Australian external territory 1.8°C
2 Macquarie Island Tasmania 4.9°C
3 Bramble Cove Tasmania 12.5°C
4 Austins Ferry Tasmania 12.5°C
5 Bellerive Tasmania 12.5°C
6 Berriedale Tasmania 12.5°C
7 Blackmans Bay Tasmania 12.5°C
8 Bridgewater Tasmania 12.5°C
9 Glenorchy Tasmania 12.5°C
10 Goodwood Tasmania 12.5°C
11 Hobart Tasmania 12.5°C
12 Howrah Tasmania 12.5°C
13 Kingston Tasmania 12.5°C
14 Lauderdale Tasmania 12.5°C
15 Lindisfarne Tasmania 12.5°C
16 Lutana Tasmania 12.5°C
17 Old Beach Tasmania 12.5°C
18 Rokeby Tasmania 12.5°C
19 Sandy Bay Tasmania 12.5°C
20 Seven Mile Beach Tasmania 12.5°C
21 Taroona Tasmania 12.5°C
22 Bruny Island Tasmania 12.5°C
23 Recherche Bay Tasmania 12.5°C
24 Southport Jetty Tasmania 12.5°C
25 Granton Tasmania 12.6°C
Show 25 more ▸
26 Kettering Tasmania 12.6°C
27 Margate Tasmania 12.6°C
28 Maatsuyker Island Tasmania 12.6°C
29 Impression Bay Tasmania 12.8°C
30 Parsons Bay Tasmania 12.8°C
31 Pirates Bay Tasmania 12.8°C
32 Swansea Tasmania 12.9°C
33 Darlington Jetty Tasmania 13.1°C
34 Spring Bay Tasmania 13.1°C
35 Stanley Tasmania 13.1°C
36 Smithton Tasmania 13.1°C
37 Wynyard Tasmania 13.1°C
38 Burnie Tasmania 13.1°C
39 Stack Island Tasmania 13.1°C
40 Alverston Tasmania 13.2°C
41 Penguin Tasmania 13.2°C
42 Devonport Tasmania 13.2°C
43 Three Hummock Island Tasmania 13.2°C
44 Big River Cove Tasmania 13.2°C
45 Port Sorell Tasmania 13.2°C
46 Swan Island Tasmania 13.2°C
47 Beauty Point Tasmania 13.3°C
48 Bridport Tasmania 13.3°C
49 George Town Tasmania 13.3°C
50 Launceston Tasmania 13.3°C

Warmest 10 in Australia in October

Same data the other way. The warmest spots for the same month.

# Location October mean
1 Burge Point Northern Territory 30.4°C
2 Anson Bay Northern Territory 30.3°C
3 Native Point Northern Territory 30.3°C
4 Point Jenny Northern Territory 30.3°C
5 Cape Ford Northern Territory 30.1°C
6 Tapa Bay Northern Territory 30.1°C
7 Cape Hotham Northern Territory 30.1°C
8 Chambers Bay Northern Territory 30.0°C
9 Glyde Point Northern Territory 30.0°C
10 Point Stuart Northern Territory 30.0°C

More on this region