Coldest sea in Australia in March

954 coastal locations in Australia ranked by typical March sea temperature, coldest first. Region-wide average in March: 25.4°C.

Coldest in March

Heard Island

3.7°C March mean in Australia

Regional March average

25.4°C

across all 954 coastal locations in Australia

Vs annual mean

+2.5°C

above the year-round regional average

What the Australia sea feels like in March

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 March fits in the year

March 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 March 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 March

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

#	Location	Country	March mean
1	Heard Island Australian external territory	Australia	3.7°C
2	Macquarie Island Tasmania	Australia	6.9°C
3	Bramble Cove Tasmania	Australia	16.3°C
4	Maatsuyker Island Tasmania	Australia	16.3°C
5	Recherche Bay Tasmania	Australia	16.4°C
6	Southport Jetty Tasmania	Australia	16.4°C
7	Cape Rabelais (Offshore) South Australia	Australia	16.4°C
8	Cape Jaffa South Australia	Australia	16.5°C
9	Beachport South Australia	Australia	16.5°C
10	Kingston South Australia	Australia	16.6°C
11	Robe South Australia	Australia	16.6°C
12	Cape Rabelais (Off) South Australia	Australia	16.7°C
13	Bruny Island Tasmania	Australia	17.0°C
14	Cape Sorell (Off) Tasmania	Australia	17.0°C
15	Granville Harbour Tasmania	Australia	17.0°C
16	Pieman River Tasmania	Australia	17.0°C
17	Granton Tasmania	Australia	17.1°C
18	Kettering Tasmania	Australia	17.1°C
19	Margate Tasmania	Australia	17.1°C
20	Austins Ferry Tasmania	Australia	17.1°C
21	Bellerive Tasmania	Australia	17.1°C
22	Berriedale Tasmania	Australia	17.1°C
23	Blackmans Bay Tasmania	Australia	17.1°C
24	Bridgewater Tasmania	Australia	17.1°C
25	Glenorchy Tasmania	Australia	17.1°C

Show 25 more ▸

26	Goodwood Tasmania	Australia	17.1°C
27	Hobart Tasmania	Australia	17.1°C
28	Howrah Tasmania	Australia	17.1°C
29	Kingston Tasmania	Australia	17.1°C
30	Lauderdale Tasmania	Australia	17.1°C
31	Lindisfarne Tasmania	Australia	17.1°C
32	Lutana Tasmania	Australia	17.1°C
33	Old Beach Tasmania	Australia	17.1°C
34	Rokeby Tasmania	Australia	17.1°C
35	Sandy Bay Tasmania	Australia	17.1°C
36	Seven Mile Beach Tasmania	Australia	17.1°C
37	Taroona Tasmania	Australia	17.1°C
38	Port Macdonnell South Australia	Australia	17.3°C
39	Impression Bay Tasmania	Australia	17.8°C
40	Parsons Bay Tasmania	Australia	17.8°C
41	Pirates Bay Tasmania	Australia	17.8°C
42	Port Campbell Victoria	Australia	17.8°C
43	Seal Bay Tasmania	Australia	17.8°C
44	Coffin Bay Entrance Beacon South Australia	Australia	17.8°C
45	King Island (Grassy) Tasmania	Australia	17.8°C
46	Bass Strait Victoria	Australia	17.8°C
47	Warrnambool Victoria	Australia	17.8°C
48	Elliston South Australia	Australia	17.9°C
49	Port Fairy Victoria	Australia	17.9°C
50	Portland Victoria	Australia	17.9°C

Warmest 10 in Australia in March

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

#	Location	Country	March mean
1	Lagrange Bay Western Australia	Australia	31.2°C
2	Depuch Island Western Australia	Australia	31.2°C
3	Port Hedland Western Australia	Australia	31.1°C
4	Valentine Island Western Australia	Australia	31.1°C
5	Shale Island Western Australia	Australia	31.0°C
6	Gulf of Carpentaria Northern Territory	Australia	30.9°C
7	Cape Domett Western Australia	Australia	30.9°C
8	Adolphus Island Western Australia	Australia	30.9°C
9	Quoin Island Northern Territory	Australia	30.9°C
10	Pelican Island Western Australia	Australia	30.8°C