On 1 July 2025, NIWA merged with GNS Science to become Earth Sciences New Zealand.

East of the South Island

Rainfall and temperature tercile tables for several locations in the East of the South Island. Data are based on the 30-year period 1971-2000. The ranges for each tercile are: below normal = second lowest to 33rd percentile; near normal = 34th to 66th percentile; above normal = 67th percentile to second highest.