Seasonal Climate Outlook

Air temperature, rainfall, soil moisture and river flow predictions for the coming season.

Watch these videos with Chris Brandolino (Principal Scientist - Forecasting) explaining how our seasonal climate outlooks can help your business succeed and how our seasonal climate outlooks can be interpreted.

The following documents also provide more background information on the outlooks:

Forecasting climate (PDF 78 KB)

More on probabilities (PDF 12 KB)

For historical rainfall and temperature data ranges for several locations within each climate outlook region, see our baseline tables.

Baseline tables

Issues

Seasonal Climate Outlook: October – December 2015

Strong El Niño conditions were established across the Equatorial Pacific during September 2015.

Seasonal Climate Outlook: September - November 2015

Strong El Niño conditions are present in the tropical Pacific ocean.

Seasonal Climate Outlook: August - October 2015

El Niño conditions continued to strengthen during July 2015.

Seasonal Climate Outlook: July - September 2015

An El Niño event is under way in the tropical Pacific. Sea surface temperatures have continued to warm across many areas of the eastern and central Tropical Pacific.

Seasonal Climate Outlook: June - August 2015

An El Niño event is now under way in the tropical Pacific.

Seasonal Climate Outlook: May - July 2015

Warming of the sea surface across the equatorial Pacific Ocean continued in April 2015, building upon the warmer than normal waters observed in previous months.

Seasonal Climate Outlook: April - June 2015

Sea surface temperature anomalies in the tropical Pacific intensified significantly around the international Dateline during March 2015 and are currently showing a pattern consistent with weak El Niño conditions.

Seasonal Climate Outlook: March - May 2015

Sea surface temperatures across the equatorial Pacific Ocean continued to reflect conditions between neutral and weak El Niño states during February 2015. Atmospheric patterns were mostly indicative of weak El Niño-like conditions.

Seasonal Climate Outlook: February - April 2015

Sea surface temperatures across the equatorial Pacific Ocean are borderline between neutral and weak El Niño conditions.

Seasonal Climate Outlook: January - March 2015

Sea surface temperatures across the equatorial Pacific Ocean remained steady during December 2014 at above conventional El Niño thresholds.

Seasonal Climate Outlook: December 2014 -February 2015

In November 2014, the equatorial Pacific Ocean warmed significantly, reaching El Niño levels towards the end of the month.

Seasonal Climate Outlook: November 2014 - January 2015

At the end of October 2014, atmospheric and oceanic indicators in the tropical Pacific Ocean were at borderline El Niño thresholds.

Seasonal Climate Outlook: October - December 2014

During September 2014, borderline El Niño conditions returned in the Pacific.

Seasonal Climate Outlook: September - November 2014

The equatorial Pacific Ocean remains ENSO-neutral at the end of August 2014.

Seasonal Climate Outlook: August - October 2014

The equatorial Pacific Ocean continues to remain ENSO-neutral at the end of July 2014, with atmospheric and oceanic conditions failing to sufficiently couple to initiate an El Niño event

Seasonal Climate Outlook: July - September 2014

While above normal sea surface temperatures across the Tropical Pacific Ocean have crossed El Niño thresholds in June 2014, most atmospheric indicators (e.g. sea level pressure, convection, trade winds) have remained at neutral levels, indicating that El Niño conditions have not yet become fully established.

Seasonal Climate Outlook: June - August 2014

During June–August 2014, mean sea level pressures are expected to be lower than normal to the northeast of New Zealand, and weak lower than normal pressures are expected over the country.

Seasonal Climate Outlook: May - July 2014

May–July temperatures are most likely (50% chance) to be average for the west of the South Island, above average (50% chance) for the east of the North Island, and average or above average (40-45%) for all remaining regions of New Zealand. Cold snaps and frosts can still be expected in some parts of the country as autumn advances into winter.

Seasonal Climate Outlook: April - June 2014

The equatorial Pacific Ocean continued in a neutral state (neither El Niño nor La Niña) in March 2014. International guidance indicates that ENSO-neutral conditions are the most likely outcome for the next three months (April – June 2014).

Seasonal Climate Outlook: March - May 2014

During March–May 2014, mean sea level pressures are expected to be lower than normal to the north of the country, with higher pressures than normal to the southeast of New Zealand.

Seasonal Climate Outlook: February 2014 - April 2014

The equatorial Pacific Ocean continued in a neutral state (neither El Niño nor La Niña) in January 2013.

Seasonal Climate Outlook: January 2014 - March 2014

The equatorial Pacific Ocean continued in a neutral state (neither El Niño nor La Niña) in December 2013.

Seasonal Climate Outlook: December 2013 - February 2014

The equatorial Pacific Ocean continues in a neutral state (neither El Niño nor La Niña) in November 2013.

Seasonal Climate Outlook: November 2013 - January 2014

The equatorial Pacific Ocean continues in a neutral state (neither El Niño nor La Niña).

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