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Coldest sea in Australia in May

954 coastal locations in Australia ranked by typical May sea temperature, coldest first. Region-wide average in May: 22.8°C.

Coldest in May

Heard Island

3.1°C May mean in Australia

Regional May average

22.8°C

across all 954 coastal locations in Australia

Vs annual mean

-0.1°C

below the year-round regional average

What the Australia sea feels like in May

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 May fits in the year

May 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 May 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 May

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

# Location May mean
1 Heard Island Australian external territory 3.1°C
2 Macquarie Island Tasmania 5.7°C
3 Austins Ferry Tasmania 14.3°C
4 Bellerive Tasmania 14.3°C
5 Berriedale Tasmania 14.3°C
6 Blackmans Bay Tasmania 14.3°C
7 Bridgewater Tasmania 14.3°C
8 Glenorchy Tasmania 14.3°C
9 Goodwood Tasmania 14.3°C
10 Hobart Tasmania 14.3°C
11 Howrah Tasmania 14.3°C
12 Kingston Tasmania 14.3°C
13 Lauderdale Tasmania 14.3°C
14 Lindisfarne Tasmania 14.3°C
15 Lutana Tasmania 14.3°C
16 Old Beach Tasmania 14.3°C
17 Rokeby Tasmania 14.3°C
18 Sandy Bay Tasmania 14.3°C
19 Seven Mile Beach Tasmania 14.3°C
20 Taroona Tasmania 14.3°C
21 Recherche Bay Tasmania 14.5°C
22 Southport Jetty Tasmania 14.5°C
23 Granton Tasmania 14.5°C
24 Kettering Tasmania 14.5°C
25 Margate Tasmania 14.5°C
Show 25 more ▸
26 Bruny Island Tasmania 14.6°C
27 Bramble Cove Tasmania 14.7°C
28 Maatsuyker Island Tasmania 14.7°C
29 Impression Bay Tasmania 14.9°C
30 Parsons Bay Tasmania 14.9°C
31 Pirates Bay Tasmania 14.9°C
32 Kingston South Australia 15.1°C
33 Robe South Australia 15.1°C
34 Darlington Jetty Tasmania 15.2°C
35 Spring Bay Tasmania 15.2°C
36 Cape Sorell (Off) Tasmania 15.2°C
37 Granville Harbour Tasmania 15.2°C
38 Pieman River Tasmania 15.2°C
39 Swansea Tasmania 15.2°C
40 Stack Island Tasmania 15.2°C
41 Melbourne (Williamstown) Victoria 15.3°C
42 Werribee Victoria 15.3°C
43 Three Hummock Island Tasmania 15.3°C
44 Smithton Tasmania 15.4°C
45 Bouchier Channel Victoria 15.4°C
46 Flinders Jetty Victoria 15.4°C
47 Sandringham Victoria 15.4°C
48 Tooradin Victoria 15.4°C
49 Western Port (Sandy Point) Victoria 15.4°C
50 Western Port (Stony Point) Victoria 15.4°C

Warmest 10 in Australia in May

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

# Location May mean
1 Degerando Island Western Australia 29.4°C
2 Macleay Island Western Australia 29.4°C
3 White Island Western Australia 29.4°C
4 Yampi Sound (Koolan Island) Western Australia 29.3°C
5 Hall Point Western Australia 29.3°C
6 Point Fawcett (Offshore) Northern Territory 29.2°C
7 Calder Shoal Northern Territory 29.2°C
8 Newby Shoal Northern Territory 29.2°C
9 Bedford Islands Western Australia 29.2°C
10 Cape Van Dieman Northern Territory 29.2°C

More on this region