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Coldest sea in Australia in April

954 coastal locations in Australia ranked by typical April sea temperature, coldest first. Region-wide average in April: 24.4°C.

Coldest in April

Heard Island

3.6°C April mean in Australia

Regional April average

24.4°C

across all 954 coastal locations in Australia

Vs annual mean

+1.5°C

above the year-round regional average

What the Australia sea feels like in April

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 April fits in the year

April 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 April 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 April

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

# Location April mean
1 Heard Island Australian external territory 3.6°C
2 Macquarie Island Tasmania 6.3°C
3 Bramble Cove Tasmania 15.3°C
4 Maatsuyker Island Tasmania 15.3°C
5 Recherche Bay Tasmania 15.4°C
6 Southport Jetty Tasmania 15.4°C
7 Bruny Island Tasmania 15.8°C
8 Granton Tasmania 15.8°C
9 Kettering Tasmania 15.8°C
10 Margate Tasmania 15.8°C
11 Austins Ferry Tasmania 15.8°C
12 Bellerive Tasmania 15.8°C
13 Berriedale Tasmania 15.8°C
14 Blackmans Bay Tasmania 15.8°C
15 Bridgewater Tasmania 15.8°C
16 Glenorchy Tasmania 15.8°C
17 Goodwood Tasmania 15.8°C
18 Hobart Tasmania 15.8°C
19 Howrah Tasmania 15.8°C
20 Kingston Tasmania 15.8°C
21 Lauderdale Tasmania 15.8°C
22 Lindisfarne Tasmania 15.8°C
23 Lutana Tasmania 15.8°C
24 Old Beach Tasmania 15.8°C
25 Rokeby Tasmania 15.8°C
Show 25 more ▸
26 Sandy Bay Tasmania 15.8°C
27 Seven Mile Beach Tasmania 15.8°C
28 Taroona Tasmania 15.8°C
29 Cape Sorell (Off) Tasmania 16.1°C
30 Granville Harbour Tasmania 16.1°C
31 Pieman River Tasmania 16.1°C
32 Kingston South Australia 16.1°C
33 Robe South Australia 16.1°C
34 Cape Jaffa South Australia 16.3°C
35 Beachport South Australia 16.4°C
36 Cape Rabelais (Offshore) South Australia 16.5°C
37 Impression Bay Tasmania 16.6°C
38 Parsons Bay Tasmania 16.6°C
39 Pirates Bay Tasmania 16.6°C
40 Cape Rabelais (Off) South Australia 16.7°C
41 Port Macdonnell South Australia 16.8°C
42 Swansea Tasmania 16.8°C
43 Port Campbell Victoria 16.8°C
44 Bass Strait Victoria 16.8°C
45 Warrnambool Victoria 16.8°C
46 Stack Island Tasmania 16.9°C
47 Port Fairy Victoria 16.9°C
48 Three Hummock Island Tasmania 16.9°C
49 Portland Victoria 16.9°C
50 King Island (Grassy) Tasmania 17.0°C

Warmest 10 in Australia in April

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

# Location April mean
1 Shale Island Western Australia 30.7°C
2 Lizard Island Western Australia 30.6°C
3 Hall Point Western Australia 30.4°C
4 Yampi Sound (Koolan Island) Western Australia 30.4°C
5 Jones Point Northern Territory 30.4°C
6 Port Keats Northern Territory 30.4°C
7 Catfish Island Northern Territory 30.3°C
8 Bedford Islands Western Australia 30.3°C
9 Cape Scott Offshore Northern Territory 30.3°C
10 Macleay Island Western Australia 30.3°C

More on this region