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Warmest sea in Australia in April

954 coastal locations in Australia ranked by their typical April sea temperature. Region-wide average in April: 24.4°C. The top of the list is where to find the warmest swimming this month.

Warmest in April

Shale Island

30.7°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, useful for trip planning weeks or months ahead.

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 warmest Australia locations in April

Sorted by the typical April mean built from a decade of daily readings at each location. Click any place for its 30-day chart, monthly profile, and full 10-year history.

# 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
11 Quoin Island Northern Territory 30.3°C
12 Chambers Bay Northern Territory 30.3°C
13 Point Stuart Northern Territory 30.3°C
14 Anson Bay Northern Territory 30.3°C
15 Cape Ford Northern Territory 30.3°C
16 Karrakatta Bay Western Australia 30.3°C
17 Peron Island North Northern Territory 30.3°C
18 Port Usborne Western Australia 30.3°C
19 Sunday Island Western Australia 30.3°C
20 Point Jenny Northern Territory 30.3°C
21 Cape Hotham Northern Territory 30.3°C
22 Pelican Island Western Australia 30.3°C
23 Adolphus Island Western Australia 30.2°C
24 Lacrosse Island Western Australia 30.2°C
25 Native Point Northern Territory 30.2°C
Show 25 more ▸
26 Burge Point Northern Territory 30.2°C
27 Cape Domett Western Australia 30.2°C
28 Degerando Island Western Australia 30.2°C
29 East Field Island Northern Territory 30.2°C
30 Glyde Point Northern Territory 30.2°C
31 West Alligator Head Northern Territory 30.2°C
32 Camp Point Northern Territory 30.2°C
33 Fish Reef Northern Territory 30.2°C
34 Reveley Island Western Australia 30.2°C
35 Tapa Bay Northern Territory 30.2°C
36 Darwin Northern Territory 30.2°C
37 Fannie Bay Northern Territory 30.2°C
38 Larrakeyah Northern Territory 30.2°C
39 Nightcliff Northern Territory 30.2°C
40 Parap Northern Territory 30.2°C
41 Stuart Park Northern Territory 30.2°C
42 Hancox Shoal Area Northern Territory 30.1°C
43 Two Hills Bay Northern Territory 30.1°C
44 Lagrange Bay Western Australia 30.1°C
45 Rocky Island Western Australia 30.1°C
46 Christine Reef Northern Territory 30.1°C
47 Port Warrender Western Australia 30.1°C
48 Valentine Island Western Australia 30.1°C
49 White Island Western Australia 30.1°C
50 Cape Baskerville Western Australia 30.1°C

Coldest 10 in Australia in April

Same data the other way. Helpful if you want to know which Australia coasts to avoid for swimming in April.

# 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

More on this region