Annual average temperature in Wellington, New Zealand

1913–2013, degrees Celsius

Data calculation/treatment

For each site, NIWA merged temperature records from local sites to form a long time series. The data are adjusted for climatic differences between sites and changes in exposure or instrumentation at the same site. This prevents the introduction of significant biases with time.
This data was also converted to global mean annual temperature anomalies (difference from normal), based on the same period we use for the New Zealand data (1981–2010)


NIWA's 'seven-station' temperature series uses temperature measurements from seven 'climate stations' (NIWA). The sites offer a representative geographical spread with reliable records dating back to the early 1900s.

Data provided by

Ministry for the Environment

Dataset name

Environmental Reporting: Annual average temperature anomaly 1909–2013


How to find the data

At URL provided, select 'Download' from the top right of the screen. You will have to register to download this dataset.

Import & extraction details

File as imported: Environmental Reporting: Annual average temperature anomaly 1909–2013

From the dataset Environmental Reporting: Annual average temperature anomaly 1909–2013, this data was extracted:

  • Rows: 2-1,794
  • Column: 5
  • Provided: 1,785 data points

This data forms the table Climate - Annual average temperature anomaly 1909–2013.

Dataset originally released on:

October 02, 2015

Purpose of collection

The primary purpose of the dataset is to provide a long time series which represents the nation-scale state of climate with respect to temperature in New Zealand.