Overall, April 2019 was characterised by higher pressure than normal over the Tasman Sea and New Zealand.
New Zealand Climate Update 239 - May 2019
30 August 2019
What happened in April how our climate outlook for the previous three months turned out, global and local sea temperatures, and our outlook for May-July.
During April 2019, the atmosphere once again responded to a warm pool of water in the central and western Pacific, with anomalous atmospheric lift, rainfall, and convection centred along and just west of the International Dateline.
May –July 2019 temperatures are forecast to be above average in the north and east of the North Island and east of the South Island (50-55% chance) and about equally likely to be above average (45% chance) or near average (40% chance) in all remaining regions of New Zealand.
The atmospheric circulation around New Zealand was forecast to be characterised by slightly higher than normal pressure to the southwest and southeast of New Zealand and lower pressure than normal to the northeast of the country.