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Warmest sea in New Zealand in October

245 coastal locations in New Zealand ranked by their typical October sea temperature. Region-wide average in October: 14.5°C. The top of the list is where to find the warmest swimming this month.

Warmest in October

Fishing Rock

19.7°C October mean in New Zealand

Regional October average

14.5°C

across all 245 coastal locations in New Zealand

Vs annual mean

-1.8°C

below the year-round regional average

What the New Zealand sea feels like in October

Water at this temperature is cold and will feel very cold initially, but the body will get used to it and longer swims are possible. Experienced swimmers can manage several hours of swimming, however hypothermia is still a real risk.

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

Where October fits in the year

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

All twelve New Zealand month rankings:

New Zealand sea temperature map (live)

The map shows today's latest reading at every New Zealand location. The list below is based on the typical October mean, useful for trip planning weeks or months ahead.

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 New Zealand locations in October

Sorted by the typical October mean built from a decade of daily readings at each location. Click any place for its 30-day chart, monthly profile, and full 10-year history.

# Location October mean
1 Fishing Rock Sugar Loaf Islands 19.7°C
2 Whangamumu Harbour Northland 16.9°C
3 Bay of Islands 16.9°C
4 Waiiti Bay Northland 16.9°C
5 Coopers Beach 16.9°C
6 Kerikeri 16.8°C
7 North Cape (Otou) Northland 16.8°C
8 Whangaroa Northland 16.8°C
9 Doves Bay Northland 16.8°C
10 Opua Northland 16.8°C
11 Doubtless Bay 16.7°C
12 Karikari Peninsula 16.7°C
13 Taipa 16.7°C
14 Paihia 16.7°C
15 Russell 16.7°C
16 Waitangi (Northland) 16.7°C
17 Waitangi 16.7°C
18 Mangonui 16.7°C
19 Kotiatia Point Northland 16.7°C
20 Matapouri 16.7°C
21 Ngunguru 16.7°C
22 Tutukaka 16.7°C
23 Kaitaia 16.5°C
24 Manawatāwhi/Great Island - North West Bay Area Outside Territorial Authority 16.5°C
25 Bay of Plenty 16.4°C
Show 25 more ▸
26 Houhora Harbour Entrance Northland 16.4°C
27 Pukenui Wharf Northland 16.4°C
28 Cape Reinga 16.4°C
29 Burgess Island (Pokohinu) Auckland 16.4°C
30 Whangarei 16.4°C
31 Ngatehe Point Northland 16.3°C
32 Marsden Point Northland 16.3°C
33 Portland Wharf Northland 16.3°C
34 Ahipara Bay Northland 16.3°C
35 Ahipara 16.3°C
36 Lottin Point Gisborne 16.2°C
37 Cape Maria van Diemen Te Tai-tokerau 16.2°C
38 Matakana River - Sandspit Auckland 16.2°C
39 Ruakaka 16.2°C
40 Kohukohu Northland 16.2°C
41 Opononi Northland 16.2°C
42 Rawene Northland 16.2°C
43 Korotiti Bay Auckland 16.2°C
44 Nagle Cove Auckland 16.2°C
45 Tikinui Northland 16.1°C
46 Tinopai Northland 16.1°C
47 Pouto Point Northland 16.1°C
48 Slipper Island (Whakahau) Waikato 16.1°C
49 Tapuaetahi Bay (Boat Harbour) Waikato 16.1°C
50 Pauanui 16.1°C

Coldest 10 in New Zealand in October

Same data the other way. Helpful if you want to know which New Zealand coasts to avoid for swimming in October.

# Location October mean
1 Campbell Island/Motu Ihupuku - Perseverance Harbour New Zealand Outlying Islands 7.4°C
2 Auckland Island - Carnley Harbour Auckland 8.5°C
3 Kaka Point 10.9°C
4 Dunedin 10.9°C
5 Portobello 10.9°C
6 Snares Islands/Tini Heke - North East Island New Zealand Outlying Islands 11.0°C
7 Green Island Otago 11.2°C
8 Port Chalmers Otago 11.3°C
9 Spit Wharf Otago 11.3°C
10 Nugget Point Otago 11.4°C

More on this region