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Coldest sea in Australia and Oceania in August

1,649 coastal locations in Australia and Oceania ranked by typical August sea temperature, coldest first. Region-wide average in August: 21.3°C.

Coldest in August

Heard Island

1.9°C August mean in Australia

Regional August average

21.3°C

across all 1,649 coastal locations in Australia and Oceania

Vs annual mean

-2.2°C

below the year-round regional average

What the Australia and Oceania sea feels like in August

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 August fits in the year

August 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 August 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 August

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

# Location August mean
1 Heard Island Australian external territory 1.9°C
2 Macquarie Island Tasmania 4.6°C
3 Campbell Island/Motu Ihupuku - Perseverance Harbour New Zealand Outlying Islands 7.5°C
4 Auckland Island - Carnley Harbour Auckland 8.7°C
5 Timaru 9.6°C
6 Sumner 9.6°C
7 Akaroa 9.8°C
8 Christchurch 9.8°C
9 Lyttelton 9.8°C
10 French Bay Canterbury 10.1°C
11 Tikao Bay Canterbury 10.1°C
12 Dunedin 10.2°C
13 Portobello 10.2°C
14 Kaka Point 10.3°C
15 Oamaru Otago 10.4°C
16 Green Island Otago 10.5°C
17 Port Chalmers Otago 10.6°C
18 Spit Wharf Otago 10.6°C
19 Nugget Point Otago 10.7°C
20 Riverton/Aparima Southland 10.7°C
21 Invercargill 10.7°C
22 Waipapa Point Southland 10.8°C
23 Bluff Southland 10.8°C
24 Dog Island Southland 10.8°C
25 Waikawa Harbour Southland 10.8°C
Show 25 more ▸
26 Kaikoura 10.8°C
27 Riverton 10.9°C
28 New River Entrance Southland 10.9°C
29 Ruapuke Island Southland 11.0°C
30 Kawakaputa Bay Southland 11.1°C
31 Balnarring Victoria 11.1°C
32 Black Rock Victoria 11.1°C
33 Cowes Victoria 11.1°C
34 Flinders Victoria 11.1°C
35 Hampton Victoria 11.1°C
36 Mordialloc Victoria 11.1°C
37 Mount Martha Victoria 11.1°C
38 Parkdale Victoria 11.1°C
39 Phillip Island Victoria 11.1°C
40 Point Leo Victoria 11.1°C
41 Western Port Bay Victoria 11.1°C
42 Port Phillip Bay Victoria 11.2°C
43 Oban Southland 11.2°C
44 Pahia 11.2°C
45 Yankee River Southland 11.2°C
46 Bouchier Channel Victoria 11.2°C
47 Flinders Jetty Victoria 11.2°C
48 Sandringham Victoria 11.2°C
49 Tooradin Victoria 11.2°C
50 Western Port (Sandy Point) Victoria 11.2°C

Warmest 10 in Australia and Oceania in August

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

# Location August mean
1 Kapingamarangi 30.1°C
2 Nukuoro 30.0°C
3 Agrihan 30.0°C
4 Pagan Island, Marianas Northern Islands 30.0°C
5 Namoluk Atoll, Chuuk, FSM Chuuk 30.0°C
6 Kosrae 30.0°C
7 Kuttu 30.0°C
8 Lukunor 30.0°C
9 Namoluk 30.0°C
10 Tafunsak 30.0°C

More on this region