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

Mean daily global radiation (Mj/sq m)

These datasets are available in a range of formats.

Please choose in which format you would like to download the dataset, below. 

Mean daily global radiation (Mj/sq m) 1981-2010 (XLSX 14 KB)

Mean daily global radiation (Mj/sqm) 1991-2020 (XLSX 16 KB)Download