Forecasting Tides at Sites around Chatham Islands

Specify a date and tide station and this routine will calculate the tides for that day.

Input Data

Date: yyyymmdd format.

Time Base
Chatham Islands Standard Time (CHAST)
Chatham Islands Daylight Time (CHADT)
CHADT goes from the last Sunday in September to the first Sunday in April.

Select a Station:

Tides for Waitangi Bay:

22-Nov-2019 CHAST (m above MSL)
High Tides Low Tides
00:43 0.392 06:55 -0.379
13:08 0.392 19:23 -0.395

Add -0.105 m for storm surge.
Storm surge is explained here

Please address enquiries to:
Derek Goring
Mulgor Consulting Ltd
Christchurch
New Zealand

This webpage is running on a Raspberry Pi