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Coldest sea in New Zealand in April

245 coastal locations in New Zealand ranked by typical April sea temperature, coldest first. Region-wide average in April: 17.8°C.

Coldest in April

Campbell Island/Motu Ihupuku - Perseverance Harbour

9.1°C April mean in New Zealand

Regional April average

17.8°C

across all 245 coastal locations in New Zealand

Vs annual mean

+1.5°C

above the year-round regional average

What the New Zealand sea feels like in April

At this temperature, water will feel cold compared to a swimming pool, but with a bit of experience and practice most people will find the water relatively comfortable to swim in.

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 April fits in the year

April 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 April 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 New Zealand locations in April

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

# Location April mean
1 Campbell Island/Motu Ihupuku - Perseverance Harbour New Zealand Outlying Islands 9.1°C
2 Auckland Island - Carnley Harbour Auckland 10.5°C
3 Kaka Point 13.1°C
4 Dunedin 13.2°C
5 Portobello 13.2°C
6 Snares Islands/Tini Heke - North East Island New Zealand Outlying Islands 13.4°C
7 Stewart Island 13.6°C
8 Green Island Otago 13.6°C
9 Port Chalmers Otago 13.7°C
10 Spit Wharf Otago 13.7°C
11 Nugget Point Otago 13.8°C
12 Port Adventure Southland 13.9°C
13 Ruapuke Island Southland 14.0°C
14 Waikawa Harbour Southland 14.0°C
15 Oamaru Otago 14.2°C
16 Waipapa Point Southland 14.2°C
17 Oban Southland 14.2°C
18 Invercargill 14.3°C
19 Bluff Southland 14.3°C
20 Dog Island Southland 14.3°C
21 Easy Harbour Southland 14.4°C
22 Small Craft Retreat Southland 14.4°C
23 Riverton 14.4°C
24 New River Entrance Southland 14.5°C
25 Riverton/Aparima Southland 14.6°C
Show 25 more ▸
26 Ernest Islands Southland 14.6°C
27 Yankee River Southland 14.7°C
28 Pahia 14.7°C
29 Kaikoura 14.7°C
30 Kawakaputa Bay Southland 14.7°C
31 Timaru 14.8°C
32 Solander Island (Hautere) Southland 14.8°C
33 Port Craig Southland 14.8°C
34 Christchurch 14.9°C
35 French Bay Canterbury 14.9°C
36 Lyttelton 14.9°C
37 Tikao Bay Canterbury 14.9°C
38 Akaroa 15.0°C
39 Sumner 15.0°C
40 Cape Campbell Marlborough 15.1°C
41 Kaingaroa Chatham Islands Territory 15.2°C
42 Waitangi Chatham Islands Territory 15.2°C
43 Owenga Chatham Islands Territory 15.2°C
44 Chalky Island - Sealers Bay Southland 15.3°C
45 Coal Island - Fishing Bay Southland 15.3°C
46 Jane Coves Southland 15.3°C
47 Welcombe Bay Southland 15.3°C
48 Port Underwood Marlborough 15.3°C
49 Picton 15.4°C
50 Lyall Bay 15.4°C

Warmest 10 in New Zealand in April

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

# Location April mean
1 Fishing Rock Sugar Loaf Islands 23.1°C
2 Coopers Beach 20.6°C
3 Bay of Islands 20.6°C
4 Kerikeri 20.5°C
5 Matapouri 20.4°C
6 Ngunguru 20.4°C
7 Tutukaka 20.4°C
8 Whangamumu Harbour Northland 20.4°C
9 Paihia 20.4°C
10 Russell 20.4°C

More on this region