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Coldest sea in Australia and Oceania in January

1,649 coastal locations in Australia and Oceania ranked by typical January sea temperature, coldest first. Region-wide average in January: 25.3°C.

Coldest in January

Heard Island

3.3°C January mean in Australia

Regional January average

25.3°C

across all 1,649 coastal locations in Australia and Oceania

Vs annual mean

+1.8°C

above the year-round regional average

What the Australia and Oceania sea feels like in January

This water temperature is comparable to that of a swimming pool, but it might be higher than most open water swimmers prefer for serious swimming. Make sure to drink plenty of water before and after swimming and don't wear a wetsuit to avoid 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 January fits in the year

January 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 January 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 January

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

# Location January mean
1 Heard Island Australian external territory 3.3°C
2 Pis 3.6°C
3 Macquarie Island Tasmania 7.1°C
4 Campbell Island/Motu Ihupuku - Perseverance Harbour New Zealand Outlying Islands 9.6°C
5 Auckland Island - Carnley Harbour Auckland 10.8°C
6 Snares Islands/Tini Heke - North East Island New Zealand Outlying Islands 13.4°C
7 Stewart Island 13.9°C
8 Kaka Point 14.1°C
9 Dunedin 14.3°C
10 Portobello 14.3°C
11 Port Adventure Southland 14.3°C
12 Easy Harbour Southland 14.4°C
13 Small Craft Retreat Southland 14.4°C
14 Green Island Otago 14.7°C
15 Nugget Point Otago 14.8°C
16 Oban Southland 14.8°C
17 Port Chalmers Otago 14.8°C
18 Spit Wharf Otago 14.8°C
19 Ruapuke Island Southland 14.8°C
20 Ernest Islands Southland 14.8°C
21 Solander Island (Hautere) Southland 14.9°C
22 Waikawa Harbour Southland 15.0°C
23 Invercargill 15.2°C
24 Bluff Southland 15.2°C
25 Dog Island Southland 15.2°C
Show 25 more ▸
26 Waipapa Point Southland 15.2°C
27 Chalky Island - Sealers Bay Southland 15.3°C
28 Coal Island - Fishing Bay Southland 15.3°C
29 Jane Coves Southland 15.3°C
30 Welcombe Bay Southland 15.3°C
31 Riverton 15.3°C
32 New River Entrance Southland 15.3°C
33 Waitangi Chatham Islands Territory 15.4°C
34 Pahia 15.4°C
35 Port Craig Southland 15.4°C
36 Yankee River Southland 15.4°C
37 Owenga Chatham Islands Territory 15.5°C
38 Kaingaroa Chatham Islands Territory 15.6°C
39 Oamaru Otago 15.6°C
40 Kawakaputa Bay Southland 15.7°C
41 Riverton/Aparima Southland 15.7°C
42 Maatsuyker Island Tasmania 15.8°C
43 Recherche Bay Tasmania 15.8°C
44 Southport Jetty Tasmania 15.8°C
45 Bramble Cove Tasmania 15.8°C
46 Cape Campbell Marlborough 16.0°C
47 Front Islands Southland 16.2°C
48 Gilbert Islands Southland 16.2°C
49 Lyall Bay 16.2°C
50 Many Islands Southland 16.2°C

Warmest 10 in Australia and Oceania in January

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

# Location January mean
1 Albert River Mouth Queensland 31.4°C
2 West Island Northern Territory 31.4°C
3 Gulf of Carpentaria Northern Territory 31.3°C
4 Centre Island Northern Territory 31.3°C
5 West Wellesley Islands Queensland 31.3°C
6 Cape Domett Western Australia 31.2°C
7 Shale Island Western Australia 31.2°C
8 Adolphus Island Western Australia 31.2°C
9 Quoin Island Northern Territory 31.2°C
10 Sweers Island Queensland 31.2°C

More on this region