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New Zealand Climate Update 190 - April 2015

What happened in March, how our climate outlook for the previous three months turned out, global and local sea temperatures, and our outlook for April-June.

New Zealand Climate Update, April 2015 [PDF 781 KB]

Global setting – March 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. Atmospheric patterns across the region were also generally consistent with weak El Niño anomalies.

Outlook – April to June 2015

Temperatures are most likely to be in the above average range in the east and north of the North Island. For all remaining regions of New Zealand temperatures are about equally likely to be in the near average or above average range. As autumn progresses, cold snaps and frosts can still be expected from time to time in some parts of the country.

Retrospective – January to March 2015 Outlook

During January – March 2015, lower pressures than normal were forecast in the western Tasman Sea. Pressures were also expected to be lower than normal to the northeast of the North Island, and higher than normal to the southeast of the South Island. This pressure pattern was expected to be associated with a disturbed westerly flow in the Tasman, and northeasterly flow onto the North Island from time to time.

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