Swimming in New Zealand in august 2025 Sea temperature by city in august

Do you want to go to the beach in New Zealand in august 2025? Is it the right month to go for pleasant temperatures and staying in the water for a long time? The answer is on this page with the sea temperatures in august in New Zealand by city and our opinion on the chances of enjoying pleasant sea conditions.

Sea temperature in New Zealand in august 2025

Here, find the average sea temperature in New Zealand in august in several coastal cities.

North Island in august

on average:

59°F

min: 58°F / max: 60°F

on average:

54°F

min: 52°F / max: 57°F

on average:

59°F

min: 59°F / max: 61°F

Cape Reinga

on average:

60°F

min: 59°F / max: 62°F

Castlepoint

on average:

57°F

min: 56°F / max: 59°F

on average:

60°F

min: 58°F / max: 61°F

South Island in august

on average:

50°F

min: 48°F / max: 51°F

on average:

49°F

min: 48°F / max: 50°F

Abel Tasman National Park

on average:

55°F

min: 54°F / max: 56°F

on average:

49°F

min: 48°F / max: 51°F

The Catlins

on average:

52°F

min: 51°F / max: 53°F

Hokitika

on average:

55°F

min: 54°F / max: 56°F

Where should you go swimming in New Zealand in the month of august?

Swimming in New Zealand in august is cold (in the best case scenario)

In august in New Zealand swimming conditions vary by city. Details below:

Swimming in august in Tauranga, Cape Reinga, Cathedral Cove, Coromandel, Omamari, Kaitaia, Kerikeri, Ruakaka, Thames, Waihi Beach and Whangamata is possible... with a wetsuit! Indeed, the water is cold at this time of year with an average temperature of 59°F (min: 59°F/max: 61°F).

Forget about swimming in Auckland, Christchurch, Dunedin, Wellington, Abel Tasman National Park, Akaroa, Castlepoint, The Catlins, Hokitika, Invercargill, Māhia, Moeraki Boulders, Mokau, Napier, Nelson, Otago Peninsula, Porangahau, Ruatoria, Stewart Island, Waiheke Island, Waitārere Beach, Wharariki beach, Whatipu Beach, Balclutha, Blenheim, Gisborne, Greymouth, Hawera, Kaikoura, Levin, New Plymouth, Oamaru, Opunake, Paraparaumu, Picton, Porirua, Raglan, Takaka, Timaru, Wairoa, Waitara, Waiuku, Wanganui, Warkworth, Westport and Whakatane in august! The water temperature is freezing, reaching as low as 58°F (and only 60°F at the best of times). Our advice: plan on sightseeing, and don't bring your beach towel!

Where to go swimming in New Zealand in august: the map of sea temperatures

ideal swimming pleasant swimming cool swimming cold swimming freezing swimming

Water temperature and seasonal norms in august

Auckland

August
Average sea temperature 59°F
Minimum sea temperature 58°F
Maximum sea temperature 60°F
Average outside temperature 56°F
Maximum outside temperature 59°F
Minimum outside temperature 54°F
Precipitation 5.9in
Number of days of precipitation 9 jour(s)
(29%)
Cloud cover 47%
Our opinion freezing swimming

More information on swimming in Auckland in august

Christchurch

August
Average sea temperature 50°F
Minimum sea temperature 48°F
Maximum sea temperature 51°F
Average outside temperature 49°F
Maximum outside temperature 54°F
Minimum outside temperature 43°F
Precipitation 2.7in
Number of days of precipitation 4 jour(s)
(12%)
Cloud cover 41%
Our opinion freezing swimming

More information on swimming in Christchurch in august

Dunedin

August
Average sea temperature 49°F
Minimum sea temperature 48°F
Maximum sea temperature 50°F
Average outside temperature 49°F
Maximum outside temperature 50°F
Minimum outside temperature 45°F
Precipitation 2.1in
Number of days of precipitation 3 jour(s)
(11%)
Cloud cover 44%
Our opinion freezing swimming

More information on swimming in Dunedin in august

Wellington

August
Average sea temperature 54°F
Minimum sea temperature 52°F
Maximum sea temperature 57°F
Average outside temperature 52°F
Maximum outside temperature 56°F
Minimum outside temperature 50°F
Precipitation 3.3in
Number of days of precipitation 5 jour(s)
(16%)
Cloud cover 40%
Our opinion freezing swimming

More information on swimming in Wellington in august

Tauranga

August
Average sea temperature 59°F
Minimum sea temperature 59°F
Maximum sea temperature 61°F
Average outside temperature 52°F
Maximum outside temperature 56°F
Minimum outside temperature 49°F
Precipitation 6.3in
Number of days of precipitation 9 jour(s)
(29%)
Cloud cover 45%
Our opinion cold swimming

More information on swimming in Tauranga in august

List of coastal cities in New Zealand

Auckland in augustfreezing swimming
Christchurch in augustfreezing swimming
Dunedin in augustfreezing swimming
Wellington in augustfreezing swimming
Tauranga in augustcold swimming
Abel Tasman National Park in augustfreezing swimming
Akaroa in augustfreezing swimming
Cape Reinga in augustcold swimming
Castlepoint in augustfreezing swimming
Cathedral Cove in augustcold swimming
The Catlins in augustfreezing swimming
Coromandel in augustcold swimming
Hokitika in augustfreezing swimming
Invercargill in augustfreezing swimming
Māhia in augustfreezing swimming
Moeraki Boulders in augustfreezing swimming
Mokau in augustfreezing swimming
Napier in augustfreezing swimming
Nelson in augustfreezing swimming
Omamari in augustcold swimming
Otago Peninsula in augustfreezing swimming
Porangahau in augustfreezing swimming
Ruatoria in augustfreezing swimming
Stewart Island in augustfreezing swimming
Waiheke Island in augustfreezing swimming
Waitārere Beach in augustfreezing swimming
Wharariki beach in augustfreezing swimming
Whatipu Beach in augustfreezing swimming
Balclutha in augustfreezing swimming
Blenheim in augustfreezing swimming
Gisborne in augustfreezing swimming
Greymouth in augustfreezing swimming
Hawera in augustfreezing swimming
Kaikoura in augustfreezing swimming
Kaitaia in augustcold swimming
Kerikeri in augustcold swimming
Levin in augustfreezing swimming
New Plymouth in augustfreezing swimming
Oamaru in augustfreezing swimming
Opunake in augustfreezing swimming
Paraparaumu in augustfreezing swimming
Picton in augustfreezing swimming
Porirua in augustfreezing swimming
Raglan in augustfreezing swimming
Ruakaka in augustcold swimming
Takaka in augustfreezing swimming
Thames in augustcold swimming
Timaru in augustfreezing swimming
Waihi Beach in augustcold swimming
Wairoa in augustfreezing swimming
Waitara in augustfreezing swimming
Waiuku in augustfreezing swimming
Wanganui in augustfreezing swimming
Warkworth in augustfreezing swimming
Westport in augustfreezing swimming
Whakatane in augustfreezing swimming
Whangamata in augustcold swimming
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