New Zealand Climate Update 243 - September 2019

August 2019 was characterised by considerably lower than normal mean sea level pressure over and to the south of New Zealand.

The NINO3.4 Index anomaly (in the central Pacific) for the month of August (to the 25th) was +0.20˚C, suggesting that oceanic ENSO neutral conditions have arrived.

September – November 2019 temperatures have about equal chances of being near average (45% chance) or below average (40% chance) for the north and west of the South Island

June – August 2019 pressure was forecast to be higher than normal to the west and northwest of New Zealand and below normal to the south of the country.