Beach
Te Oneroa-a-Tōhē / Ninety Mile Beach
Far North District, New Zealand · sea 20.4 °C at its warmest, in February

Sea temperature month by month
Monthly means in °C, NOAA OISST v2.1 climatology 1991–2020, sampled 14 km offshore, at the nearest open water cell of a 0.25° grid.
About
Te-Oneroa-a-Tōhē / Ninety Mile Beach is on the western coast of the far north of the North Island of New Zealand. The beach is actually 88 kilometres (55 miles) long.
Questions
How warm is the sea at Te Oneroa-a-Tōhē / Ninety Mile Beach?
The sea off Te Oneroa-a-Tōhē / Ninety Mile Beach averages 20.4 °C at its warmest, in February, and 14.9 °C at its coolest. These are monthly means from NOAA's OISST v2.1 satellite and buoy record for 1991 to 2020, sampled at the beach's own coordinates.
When can you swim at Te Oneroa-a-Tōhē / Ninety Mile Beach?
The sea reaches 20 °C or more from February to March. Twenty degrees is where most swimmers stop calling water cold; below it, a wetsuit helps.
Where is Te Oneroa-a-Tōhē / Ninety Mile Beach?
Te Oneroa-a-Tōhē / Ninety Mile Beach is on the coast of Far North District, New Zealand, at -34.7798, 172.9820. The map on this site flies straight to it.
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