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Warmest sea in New Zealand

245 coastal locations in New Zealand ranked by their year-round average sea temperature. The regional average is 16.3°C. The top of the list shows where to find the warmest water in a typical year. The bottom shows the coldest year-round coasts of the region.

Warmest location

Fishing Rock

21.6°C annual mean in New Zealand

Regional average

16.3°C

across all 245 New Zealand coastal locations

Warmest month

February

19.3°C region-wide average

New Zealand monthly average 13.6°C to 19.3°C
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  • Warmest month February 19.3°C
  • Coldest month August 13.6°C
  • Annual mean 16.3°C
  • Months above 20°C 0 of 12

Month by month across New Zealand

Sea temperatures in New Zealand swing from 13.6°C in August to 19.3°C in February on average across every coast we track. That spread of 6°C hides much bigger swings at individual locations.

Want a specific month? Pick one for a dedicated ranking:

New Zealand sea temperature map

Today's pin colours show the latest daily reading at every New Zealand location we track. Pick any pin for the location's full page.

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 locations in New Zealand

The warmest coastal locations across all of New Zealand, sorted by year-round average. Click any place for its 30-day chart, monthly profile, and 10-year history.

# Location Annual mean
1 Fishing Rock Sugar Loaf Islands 21.6°C
2 Coopers Beach 18.9°C
3 Bay of Islands 18.9°C
4 Kerikeri 18.8°C
5 Waiiti Bay Northland 18.8°C
6 Whangamumu Harbour Northland 18.7°C
7 Paihia 18.6°C
8 Russell 18.6°C
9 Waitangi (Northland) 18.6°C
10 Waitangi 18.6°C
11 Doubtless Bay 18.6°C
12 Doves Bay Northland 18.6°C
13 Karikari Peninsula 18.6°C
14 Opua Northland 18.6°C
15 Taipa 18.6°C
16 Matapouri 18.6°C
17 Ngunguru 18.6°C
18 Tutukaka 18.6°C
19 Mangonui 18.6°C
20 Bay of Plenty 18.6°C
21 Whangaroa Northland 18.6°C
22 North Cape (Otou) Northland 18.6°C
23 Burgess Island (Pokohinu) Auckland 18.4°C
24 Lottin Point Gisborne 18.4°C
25 Kotiatia Point Northland 18.4°C
Show 25 more ▸
26 Kaitaia 18.4°C
27 Whangarei 18.4°C
28 Korotiti Bay Auckland 18.3°C
29 Marsden Point Northland 18.3°C
30 Nagle Cove Auckland 18.3°C
31 Portland Wharf Northland 18.3°C
32 Huruhi Harbour Waikato 18.3°C
33 Matakana River - Sandspit Auckland 18.3°C
34 Slipper Island (Whakahau) Waikato 18.3°C
35 Tapuaetahi Bay (Boat Harbour) Waikato 18.3°C
36 Pauanui 18.3°C
37 Tairua 18.3°C
38 Whangamata 18.3°C
39 Cathedral Cove 18.2°C
40 Hahei 18.2°C
41 Hot Water Beach 18.2°C
42 Ruakaka 18.2°C
43 Cape Reinga 18.2°C
44 Ohope Beach 18.2°C
45 Papamoa 18.2°C
46 Goat Island 18.2°C
47 Manawatāwhi/Great Island - North West Bay Area Outside Territorial Authority 18.2°C
48 Bon Accord Harbour - Mansion House Bay Auckland 18.2°C
49 Leigh Auckland 18.2°C
50 Devonport Naval Base Auckland 18.2°C

Coldest 10 in New Zealand for contrast

Same data, sorted the other way. Useful if you want to know which New Zealand coasts stay coldest year-round.

# Location Annual mean
1 Campbell Island/Motu Ihupuku - Perseverance Harbour New Zealand Outlying Islands 8.4°C
2 Auckland Island - Carnley Harbour Auckland 9.7°C
3 Kaka Point 12.2°C
4 Dunedin 12.3°C
5 Portobello 12.3°C
6 Snares Islands/Tini Heke - North East Island New Zealand Outlying Islands 12.4°C
7 Green Island Otago 12.6°C
8 Stewart Island 12.7°C
9 Port Chalmers Otago 12.7°C
10 Spit Wharf Otago 12.7°C

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