Indicators at a glance - Climate change

This section summarises the latest Environmental Health Indicators about climate change and health in New Zealand.


The following climate and health related indicators help assess the health impacts of climate change, now and into the future. This is regardless of whether there is a significant degree of ‘change’ over the time that the indicators have been measured:

Indicator Key findings
Number of days over 25°C Northern and eastern New Zealand are currently more affected by hot days, especially the Bay of Plenty, Marlborough, and northern Canterbury regions.
Number of days below 0°C Parts of the South Island had more days with temperatures below 0°C than the rest of the country in 2019.
Number of days with soil moisture deficit Northern and eastern parts of New Zealand are currently more affected by dry days, whereas western regions of the South Island are more affected by extreme rainfall days.
Number of days with extreme rainfall In 2019, New Zealand had, on average, 65.9 (54.7–77.2) dry days and 17.7 (16.3–19.0) days with extreme rainfall. The climate station representing Tauranga District had the most dry days (136), whereas the stations representing Dunedin, Mackenzie, Southland and Westland District had the most extreme rainfall days (26 each).
Notifications of cryptosporidiosis and giardiasis In 2007-2016, the highest age-standardised rates (per year) of giardiasis notifications were in rural parts of the South Island. In the same period, the highest age-standardised rates of cryptosporidiosis notifications were in southern parts of the South Island and in the Waikato region of the North Island.
Notifications of salmonellosis In 2007-2016, the highest age-standardised rates of salmonellosis are in the lower part of the South Island. Overall, the rate of salmonellosis notifications has decreased since 2001.
Total energy consumed, by fuel type and sector The domestic transport and the industrial sectors were the main consumers of energy in New Zealand between 1990 and 2018. Together, they contribute to almost three quarters of the total energy consumption. In 2018, oil was the major type of energy consumed in the domestic transport sector (99.9%).

Interested in more information?

Carolin Haenfling

Phone +64 4 979 3119 (ext 63119)
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