November 2018 was characterised by higher than normal sea level pressure to the south of the country, and lower than normal sea level pressure over the Tasman Sea.
New Zealand Climate Update 234 - December 2018
11 January 2019
What happened in November, how our climate outlook for the previous three months turned out, global and local sea temperatures, and our outlook for December-February.
Sea surface temperatures (SSTs) across the east-central tropical Pacific have reached weak El Niño conditions.
December 2018 – February 2019 temperatures are forecast to be above average (45% chance) or near average (40% chance) for all regions of New Zealand.
The September – November 2018 atmospheric circulation around New Zealand was forecast to be characterized by higher pressure than normal over the South Island and to the south and west of the country and lower than normal pressure to the northeast of New Zealand, leading to anomalous easterly quarter (southeast to northeast) air flows over New Zealand.