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Coldest sea in Australia and Oceania in July

1,649 coastal locations in Australia and Oceania ranked by typical July sea temperature, coldest first. Region-wide average in July: 21.5°C.

Coldest in July

Heard Island

2.3°C July mean in Australia

Regional July average

21.5°C

across all 1,649 coastal locations in Australia and Oceania

Vs annual mean

-2.0°C

below the year-round regional average

What the Australia and Oceania sea feels like in July

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 and Oceania monthly average 21.3°C to 25.5°C
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  • Warmest month February 25.5°C
  • Coldest month August 21.3°C
  • Annual mean 23.5°C
  • Months above 20°C 12 of 12

Where July fits in the year

July sits inside the regional pattern shown on the left. Pick a different month to see how the ranking shifts.

All twelve Australia and Oceania month rankings:

Australia and Oceania sea temperature map (live)

The map shows today's latest reading at every Australia and Oceania location. The list below is based on the typical July 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 and Oceania locations in July

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

# Location July mean
1 Heard Island Australian external territory 2.3°C
2 Macquarie Island Tasmania 5.0°C
3 Campbell Island/Motu Ihupuku - Perseverance Harbour New Zealand Outlying Islands 7.7°C
4 Auckland Island - Carnley Harbour Auckland 9.0°C
5 Timaru 10.0°C
6 Sumner 10.1°C
7 Akaroa 10.3°C
8 Christchurch 10.3°C
9 Lyttelton 10.3°C
10 Dunedin 10.4°C
11 Portobello 10.4°C
12 Kaka Point 10.5°C
13 French Bay Canterbury 10.5°C
14 Tikao Bay Canterbury 10.5°C
15 Oamaru Otago 10.7°C
16 Green Island Otago 10.7°C
17 Port Chalmers Otago 10.8°C
18 Spit Wharf Otago 10.8°C
19 Riverton/Aparima Southland 10.9°C
20 Nugget Point Otago 10.9°C
21 Invercargill 10.9°C
22 Bluff Southland 11.0°C
23 Dog Island Southland 11.0°C
24 Waipapa Point Southland 11.0°C
25 Riverton 11.0°C
Show 25 more ▸
26 New River Entrance Southland 11.1°C
27 Waikawa Harbour Southland 11.1°C
28 Kawakaputa Bay Southland 11.2°C
29 Ruapuke Island Southland 11.2°C
30 Melbourne (Williamstown) Victoria 11.2°C
31 Port Phillip Bay Victoria 11.2°C
32 Werribee Victoria 11.2°C
33 Kaikoura 11.2°C
34 Balnarring Victoria 11.2°C
35 Black Rock Victoria 11.2°C
36 Bouchier Channel Victoria 11.2°C
37 Cowes Victoria 11.2°C
38 Flinders Jetty Victoria 11.2°C
39 Flinders Victoria 11.2°C
40 Hampton Victoria 11.2°C
41 Mordialloc Victoria 11.2°C
42 Mount Martha Victoria 11.2°C
43 Parkdale Victoria 11.2°C
44 Phillip Island Victoria 11.2°C
45 Point Leo Victoria 11.2°C
46 Sandringham Victoria 11.2°C
47 Tooradin Victoria 11.2°C
48 Western Port Bay Victoria 11.2°C
49 Western Port (Sandy Point) Victoria 11.2°C
50 Western Port (Stony Point) Victoria 11.2°C

Warmest 10 in Australia and Oceania in July

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

# Location July mean
1 Agrihan 30.1°C
2 Maug Islands 30.1°C
3 Tavanatangir Harbour East New Britain Province 30.1°C
4 Pagan Island, Marianas Northern Islands 30.1°C
5 Kimbe Bay West New Britain Province 30.1°C
6 Talasea West New Britain Province 30.1°C
7 Kapingamarangi 30.0°C
8 Eleonora Bay West New Britain Province 30.0°C
9 YasoruTo Yap 29.9°C
10 Ulithi Islands Yap 29.9°C

More on this region