Standard port periods of observation

Find the period over which tidal observations were analysed to produce our tide predictions.

The following table indicates the years for which tidal observations have been analysed. The results of the analysis of that data have been used to generate tide predictions for the period 1 July 2021 to 30 June 2022. The number of years of data analysed is also shown. Any difference between the period of observations and number of years analysed indicates that data is missing for one or more years.

 Standard port

Period of observations

No. of years

Auckland

2002 to 2020

19

Bluff

2002 to 2020

19

Dunedin

2002 to 2020

19

Gisborne

2004 to 2020

16

Lyttelton

2002 to 2020

18

Marsden Point

2002 to 2020

19

Napier

2002 to 2020

19

Nelson

2002 to 2020

19

Onehunga

2002 to 2020

17

Picton

2005 to 2020

7

Port Chalmers

2002 to 2020

19

Port Taranaki

2002 to 2020

19

Tauranga

2000 to 2020

18

Timaru

2002 – 2020

19

Wellington

2002 to 2020

19

Westport

2015 to 2020

6