Source: Earth Sciences New Zealand
Earth Sciences New Zealand’s Seasonal Climate Outlook for April to June 2026 is attached.
Highlights:
- There is an elevated chance of heavy rain events/flooding during April. Otherwise rainfall totals are equally likely to be normal or above normal across the North Island and near or below normal in the South Island.
- At the start of the outlook period, easterly winds increase the chance of heavy rain, especially from subtropical or tropical weather systems.
- Seasonal air temperatures are expected to remain near average in most regions, with some cold snaps possible later in the outlook period.
- El Niño conditions are looking increasingly likely (about 80% chance later in the year), with a gradual weakening of La Niña influences through this outlook period.
