Coldest sea in Australia in January

954 coastal locations in Australia ranked by typical January sea temperature, coldest first. Region-wide average in January: 25.2°C.

Coldest in January

Heard Island

3.3°C January mean in Australia

Regional January average

25.2°C

across all 954 coastal locations in Australia

Vs annual mean

+2.3°C

above the year-round regional average

What the Australia sea feels like in January

This water temperature is comparable to that of a swimming pool, but it might be higher than most open water swimmers prefer for serious swimming. Make sure to drink plenty of water before and after swimming and don't wear a wetsuit to avoid overheating.

Australia monthly average 20.0°C to 25.5°C

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 January fits in the year

January 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 January 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 January

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

#	Location	Country	January mean
1	Heard Island Australian external territory	Australia	3.3°C
2	Macquarie Island Tasmania	Australia	7.1°C
3	Maatsuyker Island Tasmania	Australia	15.8°C
4	Recherche Bay Tasmania	Australia	15.8°C
5	Southport Jetty Tasmania	Australia	15.8°C
6	Bramble Cove Tasmania	Australia	15.8°C
7	Bruny Island Tasmania	Australia	16.4°C
8	Granton Tasmania	Australia	16.5°C
9	Kettering Tasmania	Australia	16.5°C
10	Margate Tasmania	Australia	16.5°C
11	Austins Ferry Tasmania	Australia	16.7°C
12	Bellerive Tasmania	Australia	16.7°C
13	Berriedale Tasmania	Australia	16.7°C
14	Blackmans Bay Tasmania	Australia	16.7°C
15	Bridgewater Tasmania	Australia	16.7°C
16	Glenorchy Tasmania	Australia	16.7°C
17	Goodwood Tasmania	Australia	16.7°C
18	Hobart Tasmania	Australia	16.7°C
19	Howrah Tasmania	Australia	16.7°C
20	Kingston Tasmania	Australia	16.7°C
21	Lauderdale Tasmania	Australia	16.7°C
22	Lindisfarne Tasmania	Australia	16.7°C
23	Lutana Tasmania	Australia	16.7°C
24	Old Beach Tasmania	Australia	16.7°C
25	Rokeby Tasmania	Australia	16.7°C

Show 25 more ▸

26	Sandy Bay Tasmania	Australia	16.7°C
27	Seven Mile Beach Tasmania	Australia	16.7°C
28	Taroona Tasmania	Australia	16.7°C
29	Cape Rabelais (Offshore) South Australia	Australia	16.7°C
30	King Island (Grassy) Tasmania	Australia	16.7°C
31	Cape Rabelais (Off) South Australia	Australia	16.8°C
32	Cape Sorell (Off) Tasmania	Australia	16.8°C
33	Granville Harbour Tasmania	Australia	16.8°C
34	Pieman River Tasmania	Australia	16.8°C
35	Seal Bay Tasmania	Australia	16.8°C
36	Beachport South Australia	Australia	16.8°C
37	Impression Bay Tasmania	Australia	17.1°C
38	Parsons Bay Tasmania	Australia	17.1°C
39	Pirates Bay Tasmania	Australia	17.1°C
40	Cape Jaffa South Australia	Australia	17.1°C
41	Port Macdonnell South Australia	Australia	17.1°C
42	Three Hummock Island Tasmania	Australia	17.3°C
43	Port Campbell Victoria	Australia	17.3°C
44	Stack Island Tasmania	Australia	17.4°C
45	Kingston South Australia	Australia	17.6°C
46	Robe South Australia	Australia	17.6°C
47	Smithton Tasmania	Australia	17.7°C
48	Darlington Jetty Tasmania	Australia	17.7°C
49	Spring Bay Tasmania	Australia	17.7°C
50	Swansea Tasmania	Australia	17.7°C

Warmest 10 in Australia in January

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

#	Location	Country	January mean
1	Albert River Mouth Queensland	Australia	31.4°C
2	West Island Northern Territory	Australia	31.4°C
3	Gulf of Carpentaria Northern Territory	Australia	31.3°C
4	Centre Island Northern Territory	Australia	31.3°C
5	West Wellesley Islands Queensland	Australia	31.3°C
6	Cape Domett Western Australia	Australia	31.2°C
7	Shale Island Western Australia	Australia	31.2°C
8	Adolphus Island Western Australia	Australia	31.2°C
9	Quoin Island Northern Territory	Australia	31.2°C
10	Sweers Island Queensland	Australia	31.2°C