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Coldest sea in Australia and Oceania in May

1,649 coastal locations in Australia and Oceania ranked by typical May sea temperature, coldest first. Region-wide average in May: 23.5°C.

Coldest in May

Heard Island

3.1°C May mean in Australia

Regional May average

23.5°C

across all 1,649 coastal locations in Australia and Oceania

Vs annual mean

+0.0°C

above the year-round regional average

What the Australia and Oceania sea feels like in May

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 May fits in the year

May 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 May 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 May

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

# Location May mean
1 Heard Island Australian external territory 3.1°C
2 Macquarie Island Tasmania 5.7°C
3 Campbell Island/Motu Ihupuku - Perseverance Harbour New Zealand Outlying Islands 8.6°C
4 Auckland Island - Carnley Harbour Auckland 10.0°C
5 Kaka Point 12.2°C
6 Dunedin 12.3°C
7 Portobello 12.3°C
8 Green Island Otago 12.7°C
9 Port Chalmers Otago 12.8°C
10 Spit Wharf Otago 12.8°C
11 Nugget Point Otago 12.8°C
12 Snares Islands/Tini Heke - North East Island New Zealand Outlying Islands 12.9°C
13 Timaru 12.9°C
14 Stewart Island 12.9°C
15 Oamaru Otago 13.0°C
16 Waikawa Harbour Southland 13.1°C
17 Waipapa Point Southland 13.1°C
18 Ruapuke Island Southland 13.1°C
19 Invercargill 13.1°C
20 Bluff Southland 13.2°C
21 Dog Island Southland 13.2°C
22 Riverton/Aparima Southland 13.2°C
23 Port Adventure Southland 13.2°C
24 Christchurch 13.3°C
25 Lyttelton 13.3°C
Show 25 more ▸
26 Riverton 13.3°C
27 New River Entrance Southland 13.3°C
28 Oban Southland 13.3°C
29 French Bay Canterbury 13.4°C
30 Kaikoura 13.4°C
31 Tikao Bay Canterbury 13.4°C
32 Akaroa 13.4°C
33 Kawakaputa Bay Southland 13.4°C
34 Sumner 13.4°C
35 Pahia 13.5°C
36 Yankee River Southland 13.5°C
37 Easy Harbour Southland 13.6°C
38 Small Craft Retreat Southland 13.6°C
39 Ernest Islands Southland 13.8°C
40 Port Craig Southland 13.9°C
41 Solander Island (Hautere) Southland 14.0°C
42 Cape Campbell Marlborough 14.0°C
43 Kaingaroa Chatham Islands Territory 14.2°C
44 Waitangi Chatham Islands Territory 14.2°C
45 Chalky Island - Sealers Bay Southland 14.3°C
46 Coal Island - Fishing Bay Southland 14.3°C
47 Jane Coves Southland 14.3°C
48 Welcombe Bay Southland 14.3°C
49 Owenga Chatham Islands Territory 14.3°C
50 Austins Ferry Tasmania 14.3°C

Warmest 10 in Australia and Oceania in May

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

# Location May mean
1 Kimbe Bay West New Britain Province 30.5°C
2 Talasea West New Britain Province 30.5°C
3 Eleonora Bay West New Britain Province 30.4°C
4 Tavanatangir Harbour East New Britain Province 30.4°C
5 Kimbe 30.4°C
6 Soroken Bougainville 30.3°C
7 Torokina Bougainville 30.3°C
8 Helen Reef Hatohobei 30.2°C
9 Lombrum Manus Province 30.2°C
10 Gizo Harbour Western Province 30.2°C

More on this region