Outlook: September – November 2017

September – November 2017 temperatures are forecast to be above average for all regions of New Zealand (55% to 65% chance for above average temperatures). Nevertheless, frosts and cool snaps are still possible during spring. Coastal water temperatures around New Zealand are forecast to remain above average over the next three-month period.

September – November 2017 rainfall totals are about equally likely to be normal (35-40% chance) or above normal (35-40% chance) for the North Island and the north of the South Island and most likely to be near normal (45% chance) for all remaining regions of New Zealand.

September – November 2017 soil moisture levels and river flows are about equally likely to be near normal (35-40%) or above normal (35-40% chance) for the North Island and the north of the South Island. Soil moisture levels and river flows are most likely to be near normal (45% chance) in the east and west of the South Island.

Graphical representation of the regional probabilities, Seasonal Climate Outlook, September-November 2017.
Research subject: Climate